通过UserControl文本框的委托创建一个新事件 [英] Create a new event through delegate,of textbox of UserControl

问题描述

UserControl是一个UC组件，我在其中放置了一个文本框.那么如何通过委托在UserControl中创建此文本框的新事件.

UserControl is a UC Component,where i have taken a textbox.So how can i create a new event of this textbox which is in UserControl through delegate.

推荐答案

看一下这段代码，它可能会给您一个入门的思路:

Have a look at this code, it might give you an idea of how to get started:

public class UserControl : Control
{
   private TextBox textBox1;
   public UserControl()
   {
      textBox1 = new System.Windows.Forms.TextBox();
      textBox1.KeyPress += new System.Windows.Forms.KeyPressEventHandler(textBox1_KeyPress);
   }

   public delegate void CustomKeyPressEventHandler(object sender, System.Windows.Forms.KeyPressEventArgs e);

   public event CustomKeyPressEventHandler OnCustomKeyPress;

   private void textBox1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
   {
      if (OnCustomKeyPress != null)
         OnCustomKeyPress(sender, e);
   }
}

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