{"id":865,"date":"2021-09-14T10:02:42","date_gmt":"2021-09-14T02:02:42","guid":{"rendered":"http:\/\/www.wayln.com\/?p=865"},"modified":"2021-09-14T10:02:42","modified_gmt":"2021-09-14T02:02:42","slug":"system-reactive%e5%9f%ba%e7%a1%80-%e8%bd%ac%e6%8d%a2-net%e4%ba%8b%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/www.wayln.com\/?p=865","title":{"rendered":"System.Reactive\u57fa\u7840\u2014\u2014\u8f6c\u6362.Net\u4e8b\u4ef6"},"content":{"rendered":"<div id=\"toc_container\" class=\"toc_transparent no_bullets\"><p class=\"toc_title\">Contents<\/p><ul class=\"toc_list\"><li><a href=\"#i\"><span class=\"toc_number toc_depth_1\">1<\/span> \u95ee\u9898<\/a><\/li><li><a href=\"#i-2\"><span class=\"toc_number toc_depth_1\">2<\/span> \u89e3\u51b3\u65b9\u6848<\/a><\/li><li><a href=\"#i-3\"><span class=\"toc_number toc_depth_1\">3<\/span> \u8ba8\u8bba<\/a><\/li><\/ul><\/div>\n<p>System.Reactive\u628a\u65f6\u95f4\u5f53\u505a\u9646\u9646\u7eed\u7eed\u4f20\u6765\u7684\u6570\u636e\u5e8f\u5217\u3002\u53ef\u4ee5\u628aSystem.Reactive\u89c6\u4f5cLINQ to Events\uff08\u57fa\u4e8eIObservable&lt;T&#62;)\u3002\u533a\u522b\u662f\uff0cSystem.Reactive\u662f\u63a8\u5f0f\u6a21\u578b\uff0c\u8fd9\u610f\u5473\u7740\u67e5\u8be2\u5b9a\u4e49\u4e86\u7a0b\u5e8f\u5982\u4f55\u54cd\u5e94\u4e8b\u4ef6\u7684\u5230\u6765\u3002<br \/>\n\u82e5\u8981\u4f7f\u7528System.Reactive\uff0c\u9700\u8981\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5b89\u88c5\u7528\u4e8eSystem.Reactiv\u7684NuGet\u5305<\/p>\n<h1><span id=\"i\">\u95ee\u9898<\/span><\/h1>\n<p>\u5047\u8bbe\u9700\u8981\u628a\u67d0\u4e2a\u4e8b\u4ef6\u89c6\u4f5cSystem.Reactive\u8f93\u5165\u6d41\uff0c\u5e76\u5728\u6bcf\u6b21\u6267\u884c\u65f6\u95f4\u65f6\uff0c\u901a\u8fc7OnNext\u751f\u6210\u6570\u636e\u3002<\/p>\n<h1><span id=\"i-2\">\u89e3\u51b3\u65b9\u6848<\/span><\/h1>\n<p>Observable\u7c7b\u5b9a\u4e49\u4e86\u4e00\u4e9b\u4e8b\u4ef6\u8f6c\u6362\u5668\u3002\u5927\u591a\u6570\u7684.NET\u6846\u67b6\u4e8b\u4ef6\u4e0eFromEventPattern\u517c\u5bb9\uff0c\u4f46\u5982\u679c\u5b58\u5728\u4e0d\u9075\u5faa\u5e38\u89c1\u5f62\u5f0f\u7684\u4e8b\u4ef6\uff0c\u5219\u53ef\u4ee5\u8f6c\u800c\u4f7f\u7528FromEvent<br \/>\n\u5982\u679c\u4e8b\u4ef6\u59d4\u6258\u7c7b\u578b\u662fEventHandler&lt;T&#62;,\u90a3\u4e48FromEventPattern\u662f\u6700\u9002\u7528\u7684\u3002<\/p>\n<pre><code class=\"language-CSharp line-numbers\">var progress=new Progress&lt;int&gt;();\nIObservable&lt;EventPattern&lt;int&gt; progressReports=Observable.FromEventPattern&lt;int&gt;(\nhandler=&gt; progress.ProgressChanged+=handler,\nhandler=&gt;progress.ProgressChanged-=handler);\nprogressReports.Subscribe(data=&gt;Trace.WriteLine(\"OnNext:\"+data.EventArgs));\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u628a\u8f83\u8001\u7684\u4e8b\u4ef6\u7528FromEventPattern\u5305\u88c5\u8d77\u6765\uff1a<\/p>\n<pre><code class=\"language-CSharp line-numbers\">var timer=new System.Timers.Timer(interval:1000){Enable=true};\nIObservable&lt;EventPattern&lt;ElapsedEventArgs&gt;&gt; ticks=Observable.FromEventPattern&lt;ElapsedEventHandler,ElapsedEventArgs&gt;(\nhandler=&gt;(s,a)=&gt;handler(s,a),\n    handler=&gt;timer.Elapsed+=handler,\n    handler=&gt;timer.Elapsed-=handler\n);\ntick.Subscribe(data=&gt;Trace.WriteLine(\"OnNext:\"+data.EventArgs.SignalTime));\n\n<\/code><\/pre>\n<h1><span id=\"i-3\">\u8ba8\u8bba<\/span><\/h1>\n<p>\u5bf9System.Reactive\u53ef\u89c2\u5bdf\u5bf9\u8c61\u800c\u8a00\uff0c\u4e8b\u4ef6\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u6570\u636e\u6e90\u3002\u5728\u6807\u51c6\u4e8b\u4ef6\u683c\u5f0f\u4e2d\uff0c\u7b2c1\u4e2a\u53c2\u6570\u8868\u793a\u53d1\u9001\u8005\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u8868\u793a\u4e8b\u4ef6\u53c2\u6570\u7c7b\u578b\uff0c\u5982\u679c\u9047\u5230\u4e0d\u5bfb\u5e38\u7684\u4e8b\u4ef6\u7c7b\u578b\uff0c\u90a3\u4e48\u4ecd\u65e7\u53ef\u4ee5\u4f7f\u7528Observable.FromEvent\u65b9\u6cd5\u91cd\u8f7d\uff0c\u628a\u4ed6\u4eec\u5305\u88c5\u79e4\u53ef\u89c2\u5bdf\u5bf9\u8c61\u3002<br \/>\n\u5f53\u4e8b\u4ef6\u88ab\u5305\u88c5\u6210\u53ef\u89c2\u5bdf\u5bf9\u8c61\u65f6\uff0c\u6bcf\u6b21\u6267\u884c\u4e8b\u4ef6\u90fd\u4f1a\u8c03\u7528OnNext.\u5728\u5904\u7406AsyncCompletedEventArgs\u65f6\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u51fa\u4e4e\u610f\u6599\u7684\u884c\u4e3a\uff0c\u56e0\u4e3a\u6240\u6709\u5f02\u5e38\u90fd\u662f\u968f\u7740\u6570\u636e\uff08OnNext\uff09\u800c\u4e0d\u662f\u9519\u8bef\uff08onError)\u6765\u4f20\u9012\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Contents1 \u95ee\u98982 \u89e3\u51b3\u65b9\u68483 \u8ba8\u8bba System.Reactive\u628a\u65f6\u95f4\u5f53\u505a\u9646\u9646\u7eed\u7eed\u4f20\u6765\u7684\u6570\u636e\u5e8f\u5217\u3002 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,41,2],"tags":[],"class_list":["post-865","post","type-post","status-publish","format-standard","hentry","category-c","category-41","category-2"],"_links":{"self":[{"href":"https:\/\/www.wayln.com\/index.php?rest_route=\/wp\/v2\/posts\/865","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wayln.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wayln.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wayln.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wayln.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=865"}],"version-history":[{"count":1,"href":"https:\/\/www.wayln.com\/index.php?rest_route=\/wp\/v2\/posts\/865\/revisions"}],"predecessor-version":[{"id":866,"href":"https:\/\/www.wayln.com\/index.php?rest_route=\/wp\/v2\/posts\/865\/revisions\/866"}],"wp:attachment":[{"href":"https:\/\/www.wayln.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wayln.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wayln.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}