\u4e00\u822c\u7684\u306b\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u30fc\u3068\u3044\u3046\u306e\u306f\u30a4\u30d9\u30f3\u30c8\u767a\u751f\u3092\u5f85\u3061\u53d7\u3051\u308b\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u306b\u5bfe\u3057\u3066\u5b9f\u969b\u306e\u51e6\u7406\u306e\u90e8\u5206\u306e\u3053\u3068\u3002<\/p>\n
EventHandler\u578b\u3068\u3044\u3046\u306e\u306f\u5b9a\u7fa9\u6e08\u307f\u306e\u30c7\u30ea\u30b2\u30fc\u30c8\u578b\u306e\u3053\u3068\u3002EventHandler\u578b\u306e1\u3064\u3081\u306e\u5f15\u6570\u306fObject\u578b\u30672\u3064\u3081\u306e\u5f15\u6570\u304cEventArgs\u578b\u3068\u306a\u308b\u3002<\/p>\n
\u547c\u3073\u51fa\u3057\u306f\u81ea\u8eab\u306e\u30af\u30e9\u30b9\u304b\u3089\u306e\u307f\u53ef\u80fd\u3067\u3001\u76f4\u63a5\u30c7\u30ea\u30b2\u30fc\u30c8\u578b\u3092\u516c\u958b\u305b\u305a\u306b\u5916\u90e8\u304b\u3089\u767b\u9332\/\u89e3\u9664\u3067\u304d\u308b\u4ed5\u7d44\u307f\u3002<\/p>\n
public partial class Form1 : Form\r\n {\r\n \/\/ EventHandler\u306f\u30c7\u30ea\u30b2\u30fc\u30c8\u578b\r\n\r\n public event EventHandler TestEvent1;\r\n \/\/ \u5f15\u6570\u306fobject\u3068EventArgs\u306e\uff12\u3064\u3060\u304c\u30012\u3064\u76ee\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u308b\r\n\r\n public event EventHandler<string> TestEvent2;\r\n \/\/\u3053\u308c\u3060\u3068object\u3068string\u304c\u5f15\u6570\u3068\u306a\u308b\r\n\r\n public Form1()\r\n {\r\n InitializeComponent();\r\n\r\n TestEvent2 = (s, e) => { MessageBox.Show(e); };\r\n TestEvent2(this, \"hello\");\r\n }\r\n }<\/pre>\n public partial class Form1 : Form\r\n {\r\n public Form1()\r\n {\r\n InitializeComponent();\r\n new ReceiverClass();\r\n }\r\n }\r\n\r\n public class TestEventArgs : EventArgs\r\n {\r\n public string Msg;\r\n }\r\n\r\n public class SenderClass \/\/ Sender(\u30a4\u30d9\u30f3\u30c8\u767a\u751f\u5074)\r\n {\r\n public event EventHandler<TestEventArgs> TestEvent;\r\n \r\n protected virtual void OnTestEvent(TestEventArgs e) \r\n \/\/ protected virtual void OnXXX\u306f\u6163\u4f8b\r\n {\r\n TestEvent?.Invoke(this, e); \r\n \/\/ TestEvent\u3092\u547c\u3079\u308b\u306e\u306fSenderClass\u306e\u307f\u306a\u306e\u3067OnXXX\u304c\u5fc5\u8981\r\n }\r\n\r\n public void Start()\r\n {\r\n var e = new TestEventArgs()\r\n {\r\n Msg = \"Hello\"\r\n };\r\n\r\n OnTestEvent(e);\r\n }\r\n }\r\n\r\n public class ReceiverClass \/\/ Receiver(\u30a4\u30d9\u30f3\u30c8\u53d7\u53d6\u5074)\r\n {\r\n public ReceiverClass()\r\n {\r\n var s = new SenderClass();\r\n s.TestEvent += SayHello; \/\/ Subscribe\r\n s.Start();\r\n }\r\n\r\n private void SayHello (object s, TestEventArgs e)\r\n {\r\n MessageBox.Show(e.Msg);\r\n }\r\n\r\n }<\/pre>\n <\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e00\u822c\u7684\u306b\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u30fc\u3068\u3044\u3046\u306e\u306f\u30a4\u30d9\u30f3\u30c8\u767a\u751f\u3092\u5f85\u3061\u53d7\u3051\u308b\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u306b\u5bfe\u3057\u3066\u5b9f\u969b\u306e\u51e6\u7406\u306e\u90e8\u5206\u306e\u3053\u3068\u3002 EventHandler\u578b\u3068\u3044\u3046\u306e\u306f\u5b9a\u7fa9\u6e08\u307f\u306e\u30c7\u30ea\u30b2\u30fc\u30c8\u578b\u306e\u3053\u3068\u3002EventHandler\u578b\u306e1\u3064\u3081\u306e\u5f15\u6570\u306fOb … <\/p>\n