link中如何判断一个事件里面有几个方法?如何选择性调用?
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- threenewbee 2015-04-30 09:50关注
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Reflection; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); button1.Click += button1_Click_1; } private void button1_Click(object sender, EventArgs e) { MessageBox.Show("button1_0"); } private void button1_Click_1(object sender, EventArgs e) { MessageBox.Show("button1_1"); } public static Delegate[] GetObjectEventList(object p_Object, string p_EventName, Type p_EventType) { PropertyInfo _PropertyInfo = p_Object.GetType().GetProperty("Events", BindingFlags.Instance | BindingFlags.NonPublic); if (_PropertyInfo != null) { object _EventList = _PropertyInfo.GetValue(p_Object, null); if (_EventList != null && _EventList is EventHandlerList) { EventHandlerList _List = (EventHandlerList)_EventList; FieldInfo _FieldInfo = p_EventType.GetField(p_EventName, BindingFlags.Static | BindingFlags.NonPublic | BindingFlags.IgnoreCase); if (_FieldInfo == null) return null; Delegate _ObjectDelegate = _List[_FieldInfo.GetValue(p_Object)]; if (_ObjectDelegate == null) return null; return _ObjectDelegate.GetInvocationList(); } } return null; } private void button2_Click(object sender, EventArgs e) { Delegate[] _List = GetObjectEventList(button1, "EventClick", typeof(Control)); _List[1].Method.Invoke(this, new object[] { sender, e }); } } }
这段代码中点button2,只调用button1_Click_1
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