在.net C# 里怎么重写一个TextBox控件

Question

如标题

Answer 1

继承
public class MyTextBox : TextBox
{
   protected override OnXXX()
   {
      ....
      base();
   }
}

Answer 2

我想控制这个TextBox只能输入数字和小数，我应该重写哪个方法

Answer 3

using  System;  
using  System.Drawing;  
using  System.Windows.Forms;  
 
namespace  ManuApp  
{  
           ///  <summary>  
           ///  TextBoxNoManu  的摘要说明。  
           ///  </summary>  
           public  class  TextBoxNoManu:System.Windows.Forms.TextBox  
           {  
                       public  TextBoxNoManu()  
                       {  
                                   //  
                                   //  TODO:  在此处添加构造函数逻辑  
                                   //  
                       }  
                       protected  override  void  WndProc(ref  Message  m)  
                       {  
                                   if(m.Msg  !=  0x007B)  
                                   {  
                                               base.WndProc  (ref  m);  
                                   }  
                       }  
 
           }  
}