private void button1_Click( object sender, EventArgs e)
{
MessageBox.Show( " click by " + ((Button)sender).Name);
}

public void button2_Click( object sender, EventArgs e)
{
// 调用button1 的click事件，并传递参数
CalleventRaiseEvent(button1, " Click ", button1, null);
}

private void button3_Click( object sender, EventArgs e)
{
// 构造个新的按钮
var btn3 = new Button { Name = " btnTest_createNew ", Text = " 新按钮 ", Parent = this,
Left = button1.Left + button1.Width + 10, Top = button1.Top, Visible = true };
// btn3.Click += (s, a) => CalleventRaiseEvent(button1, "Click", button1, null);
// 将旧按钮事件放到新按钮上去
ReplaceEvent(button1, btn3, " Click ");
// 删除旧按钮
button1.Dispose();
button1 = null;
}
/// <summary>
/// 替换事件到控件
/// 必须保证 EventHandler 类型一致，否则会失败
/// </summary>
/// <param name="sourceControl"> 原控件 </param>
/// <param name="destControl"> 目标控件 </param>
/// <param name="eventName"> 事件明 </param>
public void ReplaceEvent(Control sourceControl, Control destControl, string eventName)
{
if (sourceControl == null || destControl == null || string.IsNullOrEmpty(eventName))
throw new NullReferenceException();

Type type = sourceControl.GetType();
PropertyInfo propertyInfo = type.GetProperty( " Events ", BindingFlags.Instance | BindingFlags.NonPublic);
var eventHandlerList = (EventHandlerList)propertyInfo.GetValue(sourceControl, null);
FieldInfo fieldInfo = ( typeof(Control)).GetField( " Event " + eventName, BindingFlags.Static | BindingFlags.NonPublic);
Delegate d = eventHandlerList[fieldInfo.GetValue( null)];
if (d != null)
{
foreach (Delegate di in d.GetInvocationList())
destControl.GetType().GetEvent(eventName).AddEventHandler(destControl, d);
}
else
throw new InvalidCastException( " 无效的事件转换! ");
}
/// <summary>
/// 调用事件方法
/// </summary>
/// <param name="control"> 目标控件 </param>
/// <param name="eventName"> 方法名 </param>
/// <param name="args"> 方法参数 </param>
public void CalleventRaiseEvent(Control control, string eventName, params object[] args)
{
if (control == null || string.IsNullOrEmpty(eventName))
throw new NullReferenceException();

Type type = control.GetType();

EventInfo eventInfo = type.GetEvent(eventName);
MethodInfo methodInfo = eventInfo.GetRaiseMethod();
if (methodInfo != null)
methodInfo.Invoke( this, args);
else
{
PropertyInfo propertyInfo = type.GetProperty( " Events ", BindingFlags.Instance | BindingFlags.NonPublic);
var eventHandlerList = (EventHandlerList)propertyInfo.GetValue(control, null);
FieldInfo fieldInfo = ( typeof(Control)).GetField( " Event " + eventName, BindingFlags.Static | BindingFlags.NonPublic);
Delegate d = eventHandlerList[fieldInfo.GetValue( null)];
if (d != null)
{
foreach (Delegate di in d.GetInvocationList())
di.DynamicInvoke(args);
}
else
throw new NullReferenceException( " 无效的事件激发! ");
}
}