??? ???? ??? ?? ??? ? ?????

? ????? ??? ???? "???" ?? ???? ???? ??? ?? ?? ????? ?????? ??? ??????. ??? ??? ??? ???? ??? ??? ???? ??? ?? ??? ???? ???? ?? ????? ?????.

The Reflection Route

private and Windows Forms ????? ?? ?? ??? ?? ??? ???? ? ??? ????? ??? ?????. ????? ???? ???? ? ?? ??? ??? ??? ???? ? ????.

??? ?? ????? ??? ???? ??? ?????.

• ?? ?? ??? ?? Control ????? ?????.
• click ???? Component ????? ?????.
• ? ?? ??? ??? ??1? ??? ? ??2? ?????.

??? ?? ??? ???? ??1?? ??2? ????? ?????.

?? ?

??? ??? ??? ??? ?????. ??:

using System;
using System.ComponentModel;
using System.Windows.Forms;
using System.Reflection;

namespace EventHandlerTransfer {
  public partial class Form1 : Form {
    public Form1() {
      InitializeComponent();
      button1.Click += new EventHandler(button1_Click);
      TransferEventHandler(button1, button2);
    }

    private void TransferEventHandler(Control source, Control destination) {
      // Get secret click event key
      FieldInfo eventClick = typeof(Control).GetField("EventClick", BindingFlags.NonPublic | BindingFlags.Static);
      object secret = eventClick.GetValue(null);
      // Retrieve the click event
      PropertyInfo eventsProp = typeof(Component).GetProperty("Events", BindingFlags.NonPublic | BindingFlags.Instance);
      EventHandlerList eventsSource = (EventHandlerList)eventsProp.GetValue(source, null);
      EventHandlerList eventsDestination = (EventHandlerList)eventsProp.GetValue(destination, null);
      Delegate click = eventsSource[secret];
      // Remove it from source, add it to destination
      eventsSource.RemoveHandler(secret, click);
      eventsDestination.AddHandler(secret, click);
    }

    void button1_Click(object sender, EventArgs e) {
      MessageBox.Show("Yada");
    }
  }
}

??

??? ???? ??? ???? ???? ??? ??? ???? ?? ? ??? ???? ???? ???. ? ??? ??? ??? ?? ? ?? ???? ??? ??? ?? ?? ????? ?? ?????. ?? Windows Forms ?????? ???? ??? ???? ?? ?????? ?? ??? ?? ??? ?? ?? ??????? ??? ? ???? ???? ????.

? ??? Windows Forms? ??? ?? ??? ???? ????? ???? ??? ? ?????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!