{"id":1659,"date":"2024-12-13T16:48:36","date_gmt":"2024-12-13T07:48:36","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=1659"},"modified":"2025-03-24T08:50:12","modified_gmt":"2025-03-23T23:50:12","slug":"c-await%e3%81%ae%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%ef%bc%9a5%e3%81%a4%e3%81%ae%e5%ae%9f%e8%b7%b5%e4%be%8b%e3%81%a7%e5%ad%a6%e3%81%b6%e9%9d%9e%e5%90%8c%e6%9c%9f%e3%83%97%e3%83%ad%e3%82%b0","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=1659","title":{"rendered":"C# await\u306e\u5b8c\u5168\u30ac\u30a4\u30c9\uff1a5\u3064\u306e\u5b9f\u8df5\u4f8b\u3067\u5b66\u3076\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"},"content":{"rendered":"\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>116<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>121<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>128<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\" data-dialog-title=\"\u76ee\u6b21\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">\u306f\u3058\u3081\u306b<\/a>  <\/li>  <li>    <a href=\"#i-1\">\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u57fa\u790e\u77e5\u8b58<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-2\">\u540c\u671f\u51e6\u7406\u3068\u975e\u540c\u671f\u51e6\u7406\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b<\/a>      <\/li>      <li>        <a href=\"#i-3\">\u306a\u305cawait\u304c\u5fc5\u8981\u306a\u306e\u304b\u3092\u89e3\u8aac<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-7\">async\/await\u306e\u52d5\u4f5c\u306e\u4ed5\u7d44\u307f<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-11\">await\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-12\">await\u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u6b63\u3057\u3044\u69cb\u6587<\/a>      <\/li>      <li>        <a href=\"#i-16\">async\u30e1\u30bd\u30c3\u30c9\u306e\u5b9a\u7fa9\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-19\">Task\u578b\u306e\u623b\u308a\u5024\u306e\u6271\u3044\u65b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-23\">\u5b9f\u8df5\u7684\u306aawait\u306e\u6d3b\u7528\u4f8b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-24\">WebAPI\u304b\u3089\u306e\u30c7\u30fc\u30bf\u53d6\u5f97<\/a>      <\/li>      <li>        <a href=\"#i-25\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u306e\u975e\u540c\u671f\u5316<\/a>      <\/li>      <li>        <a href=\"#i-26\">\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-27\">\u8907\u6570\u306e\u975e\u540c\u671f\u51e6\u7406\u306e\u5236\u5fa1<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-28\">UI\u306e\u5fdc\u7b54\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u5b9f\u88c5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-29\">await\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u6ce8\u610f\u70b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-30\">\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u3092\u9632\u3050\u305f\u3081\u306e\u539f\u5247<\/a>      <\/li>      <li>        <a href=\"#i-33\">\u4f8b\u5916\u51e6\u7406\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-34\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff\u3068\u6700\u9069\u5316<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-35\">\u3088\u308a\u9032\u3093\u3060await\u306e\u4f7f\u3044\u65b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-36\">ConfigureAwait\u306e\u9069\u5207\u306a\u4f7f\u7528\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-37\">\u30ad\u30e3\u30f3\u30bb\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u5b9f\u88c5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-38\">\u975e\u540c\u671f\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u6d3b\u7528<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-39\">\u88dc\u8db3\u60c5\u5831<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-40\">\u30d0\u30fc\u30b8\u30e7\u30f3\u5225\u306e\u6a5f\u80fd\u5bfe\u5fdc\u8868<\/a>      <\/li>      <li>        <a href=\"#i-41\">\u5171\u901a\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/a>      <\/li>      <li>        <a href=\"#i-44\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-45\">\u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u306e\u4f8b<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-46\">await\u306e\u307e\u3068\u3081<\/a>  <\/li><\/ul>\n      <a href=\"#\" class=\"sgb-toc-button js-toc-button\" rel=\"nofollow\" data-open-dialog=\"true\"><i class=\"fa fa-list\"><\/i><span class=\"sgb-toc-button__text\">\u76ee\u6b21\u3078<\/span><\/a>\n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-0\">\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C#\u306e\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3044\u3066\u3001await\u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u5fc5\u8981\u4e0d\u53ef\u6b20\u306a\u8981\u7d20\u3067\u3059\u3002<br>\u672c\u8a18\u4e8b\u3067\u306f\u3001await\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u304b\u3089\u9ad8\u5ea6\u306a\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af\u307e\u3067\u3001\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u3092\u4ea4\u3048\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002\u3053\u308c\u304b\u3089\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u5b66\u3076\u65b9\u304b\u3089\u3001\u3088\u308a\u52b9\u7387\u7684\u306a\u5b9f\u88c5\u3092\u76ee\u6307\u3059\u7d4c\u9a13\u8005\u307e\u3067\u3001\u5e45\u5e83\u3044\u958b\u767a\u8005\u306b\u5f79\u7acb\u3064\u5185\u5bb9\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u672c\u8a18\u4e8b\u3067\u5b66\u3079\u308b\u3053\u3068<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<p class=\"is-style-sango-paragraph-idea-alt wp-block-paragraph\">\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u57fa\u790e\u3068\u3001\u540c\u671f\u51e6\u7406\u3068\u306e\u9055\u3044<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt wp-block-paragraph\">await\u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u6b63\u3057\u3044\u4f7f\u7528\u65b9\u6cd5\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt wp-block-paragraph\">WebAPI\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3001\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3067\u306e\u5b9f\u8df5\u7684\u306a\u5b9f\u88c5\u4f8b<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt wp-block-paragraph\">\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u3084\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u9632\u3050\u305f\u3081\u306e\u5177\u4f53\u7684\u306a\u65b9\u6cd5<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt wp-block-paragraph\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u9ad8\u5ea6\u306a\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt wp-block-paragraph\">\u9069\u5207\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3068\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u306e\u65b9\u6cd5<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt wp-block-paragraph\">\u975e\u540c\u671f\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u6d3b\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u51e6\u7406<\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-1\">\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">\u540c\u671f\u51e6\u7406\u3068\u975e\u540c\u671f\u51e6\u7406\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u671f\u51e6\u7406\u3068\u975e\u540c\u671f\u51e6\u7406\u306e\u9055\u3044\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u30d5\u30ed\u30fc\u306b\u304a\u3051\u308b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u4f8b\u3067\u5177\u4f53\u7684\u306b\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u540c\u671f\u51e6\u7406\u306e\u4f8b\npublic void SynchronousProcess()\n{\n    Console.WriteLine(\"\u51e6\u7406\u958b\u59cb\");\n    Thread.Sleep(3000);  \/\/ 3\u79d2\u9593\u306e\u91cd\u3044\u51e6\u7406\u3092\u60f3\u5b9a\n    Console.WriteLine(\"\u51e6\u7406\u5b8c\u4e86\");\n}\n\n\/\/ \u975e\u540c\u671f\u51e6\u7406\u306e\u4f8b\npublic async Task AsynchronousProcess()\n{\n    Console.WriteLine(\"\u51e6\u7406\u958b\u59cb\");\n    await Task.Delay(3000);  \/\/ 3\u79d2\u9593\u306e\u91cd\u3044\u51e6\u7406\u3092\u60f3\u5b9a\n    Console.WriteLine(\"\u51e6\u7406\u5b8c\u4e86\");\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u671f\u51e6\u7406\u3067\u306f\u3001\u4e00\u3064\u306e\u51e6\u7406\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u6b21\u306e\u51e6\u7406\u306b\u9032\u3081\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u540c\u671f\u51e6\u7406\u306e\u554f\u984c<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<p class=\"is-style-sango-paragraph-bad wp-block-paragraph\">UI\u304c\u30d5\u30ea\u30fc\u30ba\u3059\u308b<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-bad wp-block-paragraph\">\u30b5\u30fc\u30d0\u30fc\u30ea\u30bd\u30fc\u30b9\u306e\u975e\u52b9\u7387\u306a\u4f7f\u7528<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-bad wp-block-paragraph\">\u5168\u4f53\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u4f4e\u4e0b<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u975e\u540c\u671f\u51e6\u7406\u3067\u89e3\u6c7a<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<p class=\"is-style-sango-paragraph-good wp-block-paragraph\">\u91cd\u3044\u51e6\u7406\u3092\u5b9f\u884c\u4e2d\u3067\u3082\u3001\u4ed6\u306e\u51e6\u7406\u3092\u7d9a\u884c\u3067\u304d\u308b<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-good wp-block-paragraph\">UI\u306e\u5fdc\u7b54\u6027\u304c\u7dad\u6301\u3055\u308c\u308b<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-good wp-block-paragraph\">\u30b5\u30fc\u30d0\u30fc\u30ea\u30bd\u30fc\u30b9\u3092\u52b9\u7387\u7684\u306b\u4f7f\u7528\u3067\u304d\u308b<\/p>\n<\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-3\">\u306a\u305cawait\u304c\u5fc5\u8981\u306a\u306e\u304b\u3092\u89e3\u8aac<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">await\u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u3001\u975e\u540c\u671f\u51e6\u7406\u306e\u5b8c\u4e86\u3092\u5f85\u6a5f\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u7406\u7531\u3067\u5fc5\u8981\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-4\">1. <strong>\u5b9f\u884c\u9806\u5e8f\u306e\u5236\u5fa1<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public async Task ProcessDataAsync()\n{\n    var data = await LoadDataAsync();  \/\/ \u30c7\u30fc\u30bf\u306e\u30ed\u30fc\u30c9\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u5f85\u6a5f\n    await ProcessAsync(data);          \/\/ \u30ed\u30fc\u30c9\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u51e6\u7406\n    await SaveResultAsync();           \/\/ \u7d50\u679c\u3092\u4fdd\u5b58\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-5\">2. <strong>\u4f8b\u5916\u51e6\u7406\u306e\u7c21\u7d20\u5316<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public async Task TryOperationAsync()\n{\n    try\n    {\n        await SomeOperationAsync();  \/\/ \u4f8b\u5916\u304c\u767a\u751f\u3057\u3066\u3082try-catch\u3067\u6355\u6349\u53ef\u80fd\n    }\n    catch (Exception ex)\n    {\n        Console.WriteLine($\"\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f: {ex.Message}\");\n    }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-6\">3. <strong>\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u5411\u4e0a<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u5730\u7344\u3092\u56de\u907f<\/li>\n\n\n\n<li>\u540c\u671f\u30b3\u30fc\u30c9\u306b\u8fd1\u3044\u76f4\u611f\u7684\u306a\u8a18\u8ff0\u304c\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">async\/await\u306e\u52d5\u4f5c\u306e\u4ed5\u7d44\u307f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">async\/await\u306e\u5185\u90e8\u52d5\u4f5c\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u52b9\u7387\u7684\u306a\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-8\">1. <strong>\u72b6\u614b\u30de\u30b7\u30f3\u306e\u751f\u6210<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public async Task&lt;string&gt; GetDataAsync()\n{\n    \/\/ \u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u72b6\u614b\u30de\u30b7\u30f3\u306b\u5909\u63db\n    var result1 = await Step1Async();  \/\/ \u72b6\u614b1\n    var result2 = await Step2Async();  \/\/ \u72b6\u614b2\n    return await Step3Async();         \/\/ \u72b6\u614b3\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-9\">2. <strong>\u5b9f\u884c\u30d5\u30ed\u30fc<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>await\u306b\u906d\u9047\u3059\u308b\u3068\u3001\u73fe\u5728\u306e\u72b6\u614b\u3092\u4fdd\u5b58<\/li>\n\n\n\n<li>\u5236\u5fa1\u3092\u547c\u3073\u51fa\u3057\u5143\u306b\u8fd4\u3059<\/li>\n\n\n\n<li>\u975e\u540c\u671f\u51e6\u7406\u304c\u5b8c\u4e86\u3059\u308b\u3068\u3001\u4fdd\u5b58\u3055\u308c\u305f\u72b6\u614b\u304b\u3089\u5b9f\u884c\u3092\u518d\u958b<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-10\">3. <strong>Context \u306e\u51e6\u7406<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public async Task UIUpdateAsync()\n{\n    await Task.Run(() =&gt; \n    {\n        \/\/ \u5225\u30b9\u30ec\u30c3\u30c9\u3067\u5b9f\u884c\u3055\u308c\u308b\u91cd\u3044\u51e6\u7406\n    }).ConfigureAwait(true);  \/\/ UI\u30b9\u30ec\u30c3\u30c9\u306b\u623b\u308b\n\n    UpdateUI();  \/\/ UI\u306e\u66f4\u65b0\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u57fa\u790e\u77e5\u8b58\u3092\u8e0f\u307e\u3048\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u679c\u7684\u306a\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u5b9f\u88c5\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<br>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001await\u306e\u5177\u4f53\u7684\u306a\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-11\">await\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">await\u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u6b63\u3057\u3044\u69cb\u6587<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">await\u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u4f7f\u7528\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-13\">1. <strong>\u57fa\u672c\u7684\u306a\u69cb\u6587<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public async Task&lt;string&gt; GetUserDataAsync(int userId)\n{\n    \/\/ await\u306f\u5fc5\u305aTask\u578b\u3092\u8fd4\u3059\u30e1\u30bd\u30c3\u30c9\u306b\u5bfe\u3057\u3066\u4f7f\u7528\n    var user = await _userRepository.GetByIdAsync(userId);\n    return user.Name;\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-14\">2. <strong>\u623b\u308a\u5024\u306e\u578b\u3068\u306e\u95a2\u4fc2<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ Task&lt;T&gt;\u3092\u8fd4\u3059\u5834\u5408\npublic async Task&lt;int&gt; CalculateAsync()\n{\n    var result = await ComputeValueAsync();\n    return result;\n}\n\n\/\/ \u623b\u308a\u5024\u304c\u4e0d\u8981\u306a\u5834\u5408\npublic async Task SendNotificationAsync()\n{\n    await _notificationService.SendAsync();\n    \/\/ \u623b\u308a\u5024\u306a\u3057\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-15\">3. <strong>\u8907\u6570\u306eawait\u4f7f\u7528<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public async Task ProcessOrderAsync(int orderId)\n{\n    var order = await _orderRepository.GetByIdAsync(orderId);\n    await _validationService.ValidateAsync(order);\n    await _paymentService.ProcessPaymentAsync(order);\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">async\u30e1\u30bd\u30c3\u30c9\u306e\u5b9a\u7fa9\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">async\u30e1\u30bd\u30c3\u30c9\u3092\u6b63\u3057\u304f\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-17\">1. <strong>\u30e1\u30bd\u30c3\u30c9\u4fee\u98fe\u5b50\u306e\u4f7f\u7528<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class OrderService\n{\n    \/\/ \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30e1\u30bd\u30c3\u30c9\n    public async Task ProcessAsync() { }\n\n    \/\/ \u9759\u7684\u30e1\u30bd\u30c3\u30c9\n    public static async Task&lt;bool&gt; ValidateAsync() { }\n\n    \/\/ \u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30e1\u30bd\u30c3\u30c9\n    private async Task UpdateDatabaseAsync() { }\n\n    \/\/ \u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\n    private async void Button_Click(object sender, EventArgs e) { }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-18\">2. <strong>\u547d\u540d\u898f\u5247<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class DataService\n{\n    \/\/ \u30e1\u30bd\u30c3\u30c9\u540d\u306e\u672b\u5c3e\u306bAsync\n    public async Task&lt;Data&gt; GetDataAsync()\n\n    \/\/ \u975e\u540c\u671f\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u540c\u671f\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u4e21\u65b9\u3092\u63d0\u4f9b\n    public Data GetData()\n    public async Task&lt;Data&gt; GetDataAsync()\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">Task\u578b\u306e\u623b\u308a\u5024\u306e\u6271\u3044\u65b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Task\u578b\u306e\u623b\u308a\u5024\u3092\u9069\u5207\u306b\u6271\u3046\u305f\u3081\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-20\">1. <strong>\u57fa\u672c\u7684\u306aTask\u578b\u306e\u6271\u3044<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class UserService\n{\n    public async Task&lt;User&gt; GetUserAsync(int id)\n    {\n        \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u3092\u975e\u540c\u671f\u3067\u53d6\u5f97\n        var user = await _dbContext.Users.FindAsync(id);\n\n        if (user == null)\n            throw new NotFoundException($\"User {id} not found\");\n\n        return user;\n    }\n\n    \/\/ \u547c\u3073\u51fa\u3057\u5074\u306e\u30b3\u30fc\u30c9\n    public async Task DisplayUserAsync(int id)\n    {\n        try\n        {\n            var user = await GetUserAsync(id);\n            Console.WriteLine($\"Found user: {user.Name}\");\n        }\n        catch (NotFoundException ex)\n        {\n            Console.WriteLine(ex.Message);\n        }\n    }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-21\">2. <strong>\u8907\u6570\u306eTask\u306e\u51e6\u7406<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public async Task ProcessMultipleTasksAsync()\n{\n    \/\/ \u9806\u6b21\u5b9f\u884c\n    var result1 = await Task1Async();\n    var result2 = await Task2Async();\n\n    \/\/ \u4e26\u5217\u5b9f\u884c\n    var tasks = new[]\n    {\n        Task1Async(),\n        Task2Async()\n    };\n    await Task.WhenAll(tasks);\n\n    \/\/ \u3044\u305a\u308c\u304b\u306e\u30bf\u30b9\u30af\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u5f85\u6a5f\n    var completedTask = await Task.WhenAny(tasks);\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-22\">3. <strong>Task\u7d50\u679c\u306e\u5909\u63db<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public async Task&lt;CustomerDto&gt; GetCustomerDtoAsync(int id)\n{\n    var customer = await _repository.GetCustomerAsync(id);\n    return new CustomerDto\n    {\n        Id = customer.Id,\n        Name = customer.Name,\n        \/\/ \u305d\u306e\u4ed6\u306e\u30de\u30c3\u30d4\u30f3\u30b0\n    };\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u3088\u3046\u306a\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u57fa\u790e\u3092\u56fa\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u77e5\u8b58\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u8df5\u7684\u306a\u4f8b\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-23\">\u5b9f\u8df5\u7684\u306aawait\u306e\u6d3b\u7528\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-24\">WebAPI\u304b\u3089\u306e\u30c7\u30fc\u30bf\u53d6\u5f97<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">REST API\u3068\u306e\u901a\u4fe1\u306f\u3001\u975e\u540c\u671f\u51e6\u7406\u306e\u4ee3\u8868\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class WeatherService\n{\n    private readonly HttpClient _httpClient;\n\n    public WeatherService()\n    {\n        _httpClient = new HttpClient\n        {\n            BaseAddress = new Uri(\"https:\/\/api.weather.com\/\")\n        };\n    }\n\n    public async Task&lt;WeatherData&gt; GetWeatherAsync(string city)\n    {\n        try\n        {\n            \/\/ API\u547c\u3073\u51fa\u3057\u3092\u975e\u540c\u671f\u3067\u5b9f\u884c\n            var response = await _httpClient.GetAsync($\"weather?city={city}\");\n\n            \/\/ \u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u78ba\u8a8d\n            response.EnsureSuccessStatusCode();\n\n            \/\/ JSON\u30c7\u30fc\u30bf\u306e\u975e\u540c\u671f\u8aad\u307f\u53d6\u308a\u3068\u9006\u30b7\u30ea\u30a2\u30eb\u5316\n            var jsonString = await response.Content.ReadAsStringAsync();\n            return JsonSerializer.Deserialize&lt;WeatherData&gt;(jsonString);\n        }\n        catch (HttpRequestException ex)\n        {\n            _logger.LogError($\"Weather API error: {ex.Message}\");\n            throw;\n        }\n    }\n\n    \/\/ \u8907\u6570\u90fd\u5e02\u306e\u5929\u6c17\u3092\u4e26\u5217\u3067\u53d6\u5f97\n    public async Task&lt;IEnumerable&lt;WeatherData&gt;&gt; GetWeatherForCitiesAsync(\n        IEnumerable&lt;string&gt; cities)\n    {\n        var tasks = cities.Select(city =&gt; GetWeatherAsync(city));\n        return await Task.WhenAll(tasks);\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-25\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u306e\u975e\u540c\u671f\u5316<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Entity Framework\u3092\u4f7f\u7528\u3057\u305f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u306e\u975e\u540c\u671f\u51e6\u7406\u306e\u5b9f\u88c5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class OrderRepository : IOrderRepository\n{\n    private readonly ApplicationDbContext _context;\n\n    public OrderRepository(ApplicationDbContext context)\n    {\n        _context = context;\n    }\n\n    public async Task&lt;Order&gt; CreateOrderAsync(Order order)\n    {\n        \/\/ \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u305f\u8907\u6570\u306e\u64cd\u4f5c\n        using var transaction = await _context.Database\n            .BeginTransactionAsync();\n        try\n        {\n            \/\/ \u6ce8\u6587\u3092\u8ffd\u52a0\n            _context.Orders.Add(order);\n            await _context.SaveChangesAsync();\n\n            \/\/ \u5728\u5eab\u3092\u66f4\u65b0\n            foreach (var item in order.Items)\n            {\n                var product = await _context.Products\n                    .FindAsync(item.ProductId);\n                product.Stock -= item.Quantity;\n            }\n            await _context.SaveChangesAsync();\n\n            await transaction.CommitAsync();\n            return order;\n        }\n        catch\n        {\n            await transaction.RollbackAsync();\n            throw;\n        }\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-26\">\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u306e\u975e\u540c\u671f\u51e6\u7406\u306e\u5b9f\u88c5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class FileProcessor\n{\n    public async Task ProcessLargeFileAsync(string filePath)\n    {\n        \/\/ \u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u4f7f\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\n        using var fileStream = new FileStream(\n            filePath, \n            FileMode.Open, \n            FileAccess.Read, \n            FileShare.Read, \n            bufferSize: 4096, \n            useAsync: true);\n\n        using var reader = new StreamReader(fileStream);\n        var content = await reader.ReadToEndAsync();\n\n        \/\/ \u51e6\u7406\u7d50\u679c\u3092\u5225\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\n        await File.WriteAllTextAsync(\n            $\"{filePath}.processed\",\n            ProcessContent(content));\n    }\n\n    \/\/ \u5927\u304d\u306a\u30d5\u30a1\u30a4\u30eb\u3092\u5206\u5272\u3057\u3066\u51e6\u7406\n    public async Task ProcessLargeFileStreamAsync(string filePath)\n    {\n        using var fileStream = new FileStream(\n            filePath, \n            FileMode.Open, \n            FileAccess.Read, \n            FileShare.Read, \n            bufferSize: 4096, \n            useAsync: true);\n\n        var buffer = new byte[4096];\n        int bytesRead;\n\n        while ((bytesRead = await fileStream.ReadAsync(buffer, 0, buffer.Length)) &gt; 0)\n        {\n            await ProcessChunkAsync(buffer, bytesRead);\n        }\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-27\">\u8907\u6570\u306e\u975e\u540c\u671f\u51e6\u7406\u306e\u5236\u5fa1<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8907\u6570\u306e\u975e\u540c\u671f\u51e6\u7406\u3092\u52b9\u7387\u7684\u306b\u5236\u5fa1\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class DataAggregator\n{\n    public async Task&lt;AggregatedData&gt; GetAggregatedDataAsync()\n    {\n        \/\/ \u8907\u6570\u306e\u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u304b\u3089\u4e26\u5217\u3067\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n        var userDataTask = _userService.GetUserDataAsync();\n        var orderDataTask = _orderService.GetOrderDataAsync();\n        var analyticsDataTask = _analyticsService.GetAnalyticsDataAsync();\n\n        \/\/ \u3059\u3079\u3066\u306e\u30bf\u30b9\u30af\u306e\u5b8c\u4e86\u3092\u5f85\u6a5f\n        await Task.WhenAll(userDataTask, orderDataTask, analyticsDataTask);\n\n        \/\/ \u7d50\u679c\u3092\u96c6\u7d04\n        return new AggregatedData\n        {\n            UserData = await userDataTask,\n            OrderData = await orderDataTask,\n            AnalyticsData = await analyticsDataTask\n        };\n    }\n\n    \/\/ \u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u4ed8\u304d\u306e\u51e6\u7406\n    public async Task&lt;T&gt; GetDataWithTimeoutAsync&lt;T&gt;(\n        Func&lt;Task&lt;T&gt;&gt; dataFetch,\n        TimeSpan timeout)\n    {\n        using var cts = new CancellationTokenSource(timeout);\n        try\n        {\n            return await dataFetch().WaitAsync(cts.Token);\n        }\n        catch (OperationCanceledException)\n        {\n            throw new TimeoutException($\"Operation timed out after {timeout.TotalSeconds} seconds\");\n        }\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-28\">UI\u306e\u5fdc\u7b54\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u5b9f\u88c5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">WPF\u3084WinForms\u3067\u306eUI\u5fdc\u7b54\u6027\u306e\u6539\u5584\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class MainWindow : Window\n{\n    private async void LoadButton_Click(object sender, RoutedEventArgs e)\n    {\n        LoadButton.IsEnabled = false;\n        ProgressBar.Visibility = Visibility.Visible;\n\n        try\n        {\n            \/\/ \u91cd\u3044\u51e6\u7406\u3092\u5225\u30b9\u30ec\u30c3\u30c9\u3067\u5b9f\u884c\n            var result = await Task.Run(async () =&gt;\n            {\n                var data = await _dataService.LoadLargeDataAsync();\n                return ProcessData(data);\n            });\n\n            \/\/ UI\u66f4\u65b0\n            DataGrid.ItemsSource = result;\n        }\n        catch (Exception ex)\n        {\n            MessageBox.Show(ex.Message);\n        }\n        finally\n        {\n            LoadButton.IsEnabled = true;\n            ProgressBar.Visibility = Visibility.Collapsed;\n        }\n    }\n\n    \/\/ \u9032\u6357\u5831\u544a\u4ed8\u304d\u306e\u51e6\u7406\n    private async Task LoadDataWithProgressAsync(IProgress&lt;int&gt; progress)\n    {\n        var items = await _dataService.GetItemsAsync();\n        var total = items.Count;\n\n        for (int i = 0; i &lt; total; i++)\n        {\n            await ProcessItemAsync(items[i]);\n            progress.Report((i + 1) * 100 \/ total);\n        }\n    }\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u5b9f\u8df5\u4f8b\u306f\u3001\u5b9f\u969b\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u3088\u304f\u906d\u9047\u3059\u308b\u30b7\u30ca\u30ea\u30aa\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002<br>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u5b9f\u88c5\u3092\u884c\u3046\u969b\u306e\u6ce8\u610f\u70b9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-29\">await\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u6ce8\u610f\u70b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-30\">\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u3092\u9632\u3050\u305f\u3081\u306e\u539f\u5247<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3051\u308b\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u306f\u6df1\u523b\u306a\u554f\u984c\u3068\u306a\u308a\u307e\u3059\u304c\u3001\u4ee5\u4e0b\u306e\u539f\u5247\u306b\u5f93\u3046\u3053\u3068\u3067\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-31\">1. <strong>ConfigureAwait(false)\u306e\u9069\u5207\u306a\u4f7f\u7528<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class LibraryClass\n{\n    \/\/ \u30e9\u30a4\u30d6\u30e9\u30ea\u30b3\u30fc\u30c9\u3067\u306fConfigureAwait(false)\u3092\u4f7f\u7528\n    public async Task LibraryMethodAsync()\n    {\n        await Task.Delay(1000).ConfigureAwait(false);\n        await DoSomethingAsync().ConfigureAwait(false);\n    }\n}\n\npublic class UIClass\n{\n    \/\/ UI\u95a2\u9023\u30b3\u30fc\u30c9\u3067\u306fConfigureAwait(false)\u3092\u4f7f\u7528\u3057\u306a\u3044\n    private async void Button_Click(object sender, EventArgs e)\n    {\n        await UpdateUIAsync();  \/\/ \u540c\u671f\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3092\u7dad\u6301\n    }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-32\">2. <strong>\u975e\u540c\u671f\u30e1\u30bd\u30c3\u30c9\u306e\u540c\u671f\u547c\u3073\u51fa\u3057\u3092\u907f\u3051\u308b<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u60aa\u3044\u4f8b\npublic void BadMethod()\n{\n    var result = GetDataAsync().Result;  \/\/ \u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u306e\u5371\u967a\u6027\n}\n\n\/\/ \u826f\u3044\u4f8b\npublic async Task GoodMethodAsync()\n{\n    var result = await GetDataAsync();\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-33\">\u4f8b\u5916\u51e6\u7406\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u975e\u540c\u671f\u30b3\u30fc\u30c9\u306b\u304a\u3051\u308b\u4f8b\u5916\u51e6\u7406\u306e\u9069\u5207\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class ExceptionHandlingExample\n{\n    public async Task ProcessWithRetryAsync()\n    {\n        int retryCount = 3;\n        int currentAttempt = 0;\n\n        while (currentAttempt &lt; retryCount)\n        {\n            try\n            {\n                await DoWorkAsync();\n                break;  \/\/ \u6210\u529f\u3057\u305f\u3089\u7d42\u4e86\n            }\n            catch (HttpRequestException ex)\n            {\n                currentAttempt++;\n                if (currentAttempt == retryCount)\n                    throw;  \/\/ \u30ea\u30c8\u30e9\u30a4\u56de\u6570\u3092\u8d85\u3048\u305f\u3089\u4f8b\u5916\u3092\u518d\u30b9\u30ed\u30fc\n\n                await Task.Delay(TimeSpan.FromSeconds(Math.Pow(2, currentAttempt)));\n            }\n        }\n    }\n\n    public async Task HandleMultipleExceptionsAsync()\n    {\n        try\n        {\n            await RiskyOperationAsync();\n        }\n        catch (Exception ex) when (ex is HttpRequestException || \n                                 ex is TimeoutException)\n        {\n            \/\/ \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u95a2\u9023\u306e\u30a8\u30e9\u30fc\u51e6\u7406\n            await HandleNetworkErrorAsync(ex);\n        }\n        catch (Exception ex) when (LogError(ex))  \/\/ \u6761\u4ef6\u4ed8\u304d\u30ad\u30e3\u30c3\u30c1\n        {\n            \/\/ \u305d\u306e\u4ed6\u306e\u30a8\u30e9\u30fc\u51e6\u7406\n            throw;  \/\/ \u30ed\u30b0\u3092\u6b8b\u3057\u305f\u5f8c\u3067\u518d\u30b9\u30ed\u30fc\n        }\n    }\n\n    private bool LogError(Exception ex)\n    {\n        _logger.LogError(ex);\n        return true;  \/\/ \u5e38\u306b\u30ad\u30e3\u30c3\u30c1\u3059\u308b\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-34\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff\u3068\u6700\u9069\u5316<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u975e\u540c\u671f\u51e6\u7406\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class PerformanceOptimization\n{\n    \/\/ \u4e0d\u8981\u306a\u30bf\u30b9\u30af\u4f5c\u6210\u3092\u907f\u3051\u308b\n    public Task&lt;int&gt; OptimizedMethodAsync()\n    {\n        if (_cache.TryGetValue(\"key\", out var value))\n            return Task.FromResult(value);  \/\/ \u65e2\u5b58\u306e\u5024\u306f\u30bf\u30b9\u30af\u3067\u30e9\u30c3\u30d7\n\n        return SlowOperationAsync();\n    }\n\n    \/\/ \u9069\u5207\u306a\u30ad\u30e3\u30f3\u30bb\u30ec\u30fc\u30b7\u30e7\u30f3\u51e6\u7406\n    public async Task ProcessWithCancellationAsync(\n        CancellationToken cancellationToken)\n    {\n        using var cts = CancellationTokenSource\n            .CreateLinkedTokenSource(cancellationToken);\n        cts.CancelAfter(TimeSpan.FromSeconds(30));  \/\/ \u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u8a2d\u5b9a\n\n        try\n        {\n            await DoWorkAsync(cts.Token);\n        }\n        catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)\n        {\n            \/\/ \u30ad\u30e3\u30f3\u30bb\u30eb\u8981\u6c42\u306b\u3088\u308b\u4e2d\u65ad\n            throw;\n        }\n        catch (OperationCanceledException)\n        {\n            \/\/ \u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306b\u3088\u308b\u4e2d\u65ad\n            throw new TimeoutException(\"Operation timed out\");\n        }\n    }\n\n    \/\/ \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u5b9f\u88c5\n    public async IAsyncEnumerable&lt;T&gt; ProcessLargeDataSetAsync&lt;T&gt;(\n        [EnumeratorCancellation] CancellationToken cancellationToken = default)\n    {\n        await foreach (var item in GetDataStreamAsync()\n            .WithCancellation(cancellationToken))\n        {\n            yield return await ProcessItemAsync(item);\n        }\n    }\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u6ce8\u610f\u70b9\u3092\u5b88\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5168\u3067\u52b9\u7387\u7684\u306a\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<br>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3055\u3089\u306b\u9032\u3093\u3060await\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-35\">\u3088\u308a\u9032\u3093\u3060await\u306e\u4f7f\u3044\u65b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-36\">ConfigureAwait\u306e\u9069\u5207\u306a\u4f7f\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">ConfigureAwait\u306e\u9069\u5207\u306a\u4f7f\u7528\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u4fe1\u983c\u6027\u306b\u5927\u304d\u304f\u5f71\u97ff\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class ConfigureAwaitExample\n{\n    public async Task&lt;int&gt; LibraryMethodAsync()\n    {\n        \/\/ \u30e9\u30a4\u30d6\u30e9\u30ea\u30b3\u30fc\u30c9\u3067\u306f\u5e38\u306bConfigureAwait(false)\u3092\u4f7f\u7528\n        var data = await FetchDataAsync().ConfigureAwait(false);\n        var processed = await ProcessDataAsync(data).ConfigureAwait(false);\n        return processed;\n    }\n\n    public class CustomAwaiter\n    {\n        \/\/ \u30ab\u30b9\u30bf\u30e0ConfigureAwait\u306e\u5b9f\u88c5\n        public CustomAwaitable&lt;T&gt; ConfigureAwait(bool continueOnCapturedContext)\n        {\n            return new CustomAwaitable&lt;T&gt;(this, continueOnCapturedContext);\n        }\n\n        \/\/ \u72ec\u81ea\u306eawait\u53ef\u80fd\u306a\u578b\u306e\u5b9f\u88c5\n        public CustomAwaiter GetAwaiter()\n        {\n            return new CustomAwaiter(this);\n        }\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-37\">\u30ad\u30e3\u30f3\u30bb\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u5b9f\u88c5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u52b9\u679c\u7684\u306a\u30ad\u30e3\u30f3\u30bb\u30ec\u30fc\u30b7\u30e7\u30f3\u51e6\u7406\u306e\u5b9f\u88c5\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class CancellationExample\n{\n    public async Task ProcessWithTimeoutAsync(\n        Func&lt;CancellationToken, Task&gt; operation,\n        TimeSpan timeout)\n    {\n        using var cts = new CancellationTokenSource();\n        var timeoutTask = Task.Delay(timeout, cts.Token);\n\n        try\n        {\n            var operationTask = operation(cts.Token);\n            var completedTask = await Task.WhenAny(operationTask, timeoutTask);\n\n            if (completedTask == timeoutTask)\n            {\n                cts.Cancel();  \/\/ \u64cd\u4f5c\u3092\u30ad\u30e3\u30f3\u30bb\u30eb\n                throw new TimeoutException($\"Operation timed out after {timeout.TotalSeconds} seconds\");\n            }\n\n            await operationTask;  \/\/ \u4f8b\u5916\u3092\u4f1d\u64ad\u3055\u305b\u308b\n        }\n        finally\n        {\n            cts.Cancel();  \/\/ \u30ea\u30bd\u30fc\u30b9\u306e\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\n        }\n    }\n\n    \/\/ \u9032\u6357\u5831\u544a\u4ed8\u304d\u306e\u9577\u6642\u9593\u51e6\u7406\n    public async Task ProcessLongRunningTaskAsync(\n        IProgress&lt;int&gt; progress,\n        CancellationToken cancellationToken)\n    {\n        var items = await GetItemsAsync(cancellationToken);\n        var total = items.Count;\n\n        for (int i = 0; i &lt; total; i++)\n        {\n            cancellationToken.ThrowIfCancellationRequested();\n\n            await ProcessItemAsync(items[i], cancellationToken);\n            progress.Report((i + 1) * 100 \/ total);\n        }\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-38\">\u975e\u540c\u671f\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u6d3b\u7528<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C# 8.0\u4ee5\u964d\u3067\u5c0e\u5165\u3055\u308c\u305f\u975e\u540c\u671f\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class AsyncStreamExample\n{\n    \/\/ \u975e\u540c\u671f\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u751f\u6210\n    public async IAsyncEnumerable&lt;DataItem&gt; GetDataStreamAsync(\n        [EnumeratorCancellation] CancellationToken cancellationToken = default)\n    {\n        await foreach (var batch in GetDataBatchesAsync(cancellationToken))\n        {\n            foreach (var item in batch)\n            {\n                cancellationToken.ThrowIfCancellationRequested();\n                yield return item;\n            }\n        }\n    }\n\n    \/\/ \u975e\u540c\u671f\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u6d88\u8cbb\n    public async Task ProcessStreamAsync(\n        IAsyncEnumerable&lt;DataItem&gt; dataStream,\n        CancellationToken cancellationToken = default)\n    {\n        await foreach (var item in dataStream.WithCancellation(cancellationToken))\n        {\n            await ProcessItemAsync(item, cancellationToken);\n        }\n    }\n\n    \/\/ \u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u3068\u4e26\u5217\u51e6\u7406\u306e\u7d44\u307f\u5408\u308f\u305b\n    public async Task ProcessStreamWithBufferingAsync(\n        IAsyncEnumerable&lt;DataItem&gt; source,\n        int bufferSize = 100)\n    {\n        var buffer = new List&lt;DataItem&gt;();\n\n        await foreach (var item in source)\n        {\n            buffer.Add(item);\n\n            if (buffer.Count &gt;= bufferSize)\n            {\n                await ProcessBufferAsync(buffer);\n                buffer.Clear();\n            }\n        }\n\n        if (buffer.Count &gt; 0)\n        {\n            await ProcessBufferAsync(buffer);\n        }\n    }\n\n    private async Task ProcessBufferAsync(List&lt;DataItem&gt; items)\n    {\n        var tasks = items.Select(item =&gt; ProcessItemAsync(item));\n        await Task.WhenAll(tasks);\n    }\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<br>\u6700\u5f8c\u306b\u3001\u3053\u308c\u3089\u306e\u77e5\u8b58\u3092\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u6d3b\u7528\u3059\u308b\u969b\u306f\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<div class=\"wp-block-sgb-box sng-box box8\">\n<ol class=\"wp-block-list is-style-sango-list-simple\">\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8981\u4ef6\u306b\u57fa\u3065\u3044\u3066\u9069\u5207\u306a\u624b\u6cd5\u3092\u9078\u629e<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u3092\u9069\u5207\u306b\u5b9f\u88c5<\/li>\n\n\n\n<li>\u53ef\u8aad\u6027\u3068\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u8003\u616e<\/li>\n\n\n\n<li>\u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u3067\u52d5\u4f5c\u3092\u78ba\u8a8d<\/li>\n<\/ol>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-39\">\u88dc\u8db3\u60c5\u5831<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-40\">\u30d0\u30fc\u30b8\u30e7\u30f3\u5225\u306e\u6a5f\u80fd\u5bfe\u5fdc\u8868<\/h3>\n\n\n<div id=\"id-ede4999b-4837-45c0-90e3-75c65cbb512c\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6a5f\u80fd<\/th><th>C# \u30d0\u30fc\u30b8\u30e7\u30f3<\/th><th>.NET \u30d0\u30fc\u30b8\u30e7\u30f3<\/th><\/tr><\/thead><tbody><tr><td>async\/await<\/td><td>5.0\u4ee5\u964d<\/td><td>.NET 4.5\u4ee5\u964d<\/td><\/tr><tr><td>ValueTask<\/td><td>7.0\u4ee5\u964d<\/td><td>.NET Core 2.0\u4ee5\u964d<\/td><\/tr><tr><td>\u975e\u540c\u671f\u30b9\u30c8\u30ea\u30fc\u30e0<\/td><td>8.0\u4ee5\u964d<\/td><td>.NET Core 3.0\u4ee5\u964d<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-41\">\u5171\u901a\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-42\">1. <strong>\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u306e\u8a3a\u65ad\u65b9\u6cd5<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u3092\u8a3a\u65ad\u3059\u308b\u305f\u3081\u306e\u30d8\u30eb\u30d1\u30fc\u30e1\u30bd\u30c3\u30c9\npublic static class DeadlockDetector\n{\n    public static async Task DetectPotentialDeadlocksAsync(\n        Func&lt;Task&gt; operation)\n    {\n        var timeoutTask = Task.Delay(TimeSpan.FromSeconds(5));\n        var operationTask = operation();\n\n        var completedTask = await Task.WhenAny(\n            timeoutTask, operationTask);\n\n        if (completedTask == timeoutTask)\n        {\n            throw new Exception(\"\u6f5c\u5728\u7684\u306a\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u3092\u691c\u51fa\");\n        }\n    }\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-43\">2. <strong>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u9632\u6b62<\/strong><\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class AsyncMemoryManagement\n{\n    \/\/ \u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u3092\u9069\u5207\u306b\u884c\u3046\u30d1\u30bf\u30fc\u30f3\n    private async Task ProcessWithResourceManagementAsync()\n    {\n        await using var resource = \n            await CreateManagedResourceAsync();\n        await resource.ProcessAsync();\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-44\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h3>\n\n\n\n<ol class=\"wp-block-list is-style-sango-list-check\">\n<li>\u30bf\u30b9\u30af\u306e\u4e26\u5217\u5b9f\u884c\u304c\u9069\u5207\u306b\u5236\u5fa1\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u8003\u616e\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li>\u30ad\u30e3\u30f3\u30bb\u30ec\u30fc\u30b7\u30e7\u30f3\u6a5f\u80fd\u304c\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u304c\u9069\u5207\u304b<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-45\">\u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u306e\u4f8b<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class AsyncOperationTests\n{\n    [Fact]\n    public async Task ProcessAsync_WithValidInput_CompletesSuccessfully()\n    {\n        \/\/ Arrange\n        var sut = new AsyncOperation();\n        var input = new TestData();\n\n        \/\/ Act\n        var result = await sut.ProcessAsync(input);\n\n        \/\/ Assert\n        Assert.NotNull(result);\n        Assert.Equal(ExpectedValue, result.Value);\n    }\n\n    [Fact]\n    public async Task ProcessAsync_WithCancellation_ThrowsOperationCanceledException()\n    {\n        \/\/ Arrange\n        var sut = new AsyncOperation();\n        using var cts = new CancellationTokenSource();\n\n        \/\/ Act &amp; Assert\n        await Assert.ThrowsAsync&lt;OperationCanceledException&gt;(() =&gt;\n        {\n            cts.Cancel();\n            return sut.ProcessAsync(cts.Token);\n        });\n    }\n}<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-46\">await\u306e\u307e\u3068\u3081<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">await\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u5fdc\u7b54\u6027\u3092\u5927\u304d\u304f\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u62bc\u3055\u3048\u305f\u4e0a\u3067\u3001\u5b9f\u8df5\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u3068\u6ce8\u610f\u70b9\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u3053\u306e\u8a18\u4e8b\u306e\u4e3b\u306a\u30dd\u30a4\u30f3\u30c8<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<ol class=\"wp-block-list\">\n<li>\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u57fa\u672c\n<ul class=\"wp-block-list\">\n<li>\u540c\u671f\u51e6\u7406\u3068\u975e\u540c\u671f\u51e6\u7406\u306e\u660e\u78ba\u306a\u9055\u3044\u3092\u7406\u89e3<\/li>\n\n\n\n<li>await\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u5fc5\u8981\u306a\u7406\u7531\u3068\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\n<ul 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