在WinForm项目上右键——>添加——>新建项——>找到Windows Forms ——>点击自定义控件——>命名——>添加——>找到定义的控件（命名.cs）——>双击打开——>删除其中的（命名.Designer.cs）的文件——>找到命名文件双击打开——>删除public partial class中的partial以及public MyButtom()

{

InitializeComponent();

}中的InitializeComponent();

1 using System;  2 using System.Collections.Generic;  3 using System.ComponentModel;  4 using System.Data;  5 using System.Drawing;  6 using System.Linq;  7 using System.Text;  8 using System.Threading.Tasks;  9 using System.Windows.Forms; 10  11 namespace WinForm测试 12 { 13     public class MyButton : Control 14     { 15         public MyButton() 16         { 17  18         } 19  20         protected override void OnPaint(PaintEventArgs pe) 21         { 22             //base.OnPaint(pe); 23             Graphics g = pe.Graphics; 24  25             if (backgroundImageM != null) //判断是否有背景图 26             { 27                 g.DrawImage(backgroundImageM, this.ClientRectangle); //画出背景图参数1背景图，参数2默认的矩形 28             } 29             g.FillRectangle(new SolidBrush(backColorM), this.ClientRectangle); //画背景参数1实心的backColorM颜色的，参数2默认的矩形 30             g.DrawString(textM, fontM, new SolidBrush(FontMColor), this.ClientRectangle); //画文字参数1要画的文字，参数2文字的大小等，参数3文字的颜色，参数4默认的矩形 31         } 32  33         /// 
 34         /// 控件的默认图片  35         /// 
  36         private Image backgroundImageM = null; 37         [Description("控件的默认图片")] //在属性中点击此属性的提示 38         public Image BackgroundImageM 39         { 40             get { return backgroundImageM; } 41             set 42             { 43                 backgroundImageM = value; 44             } 45         } 46  47         /// 
 48         /// 控件的背景色 49         /// 
 50         private Color backColorM = Color.Transparent; 51         [Description("控件的背景色")] 52         public Color BackColorM 53         { 54             get { return backColorM; } 55             set 56             { 57                 backColorM = value; 58             } 59         } 60  61         /// 
 62         /// 用于显示文本的字体 63         /// 
 64         private Font fontM = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134))); 65         [Description("用于显示文本的字体")] 66         public Font FontM 67         { 68             get { return fontM; } 69             set 70             { 71                 fontM = value; 72             } 73         } 74  75         /// 
 76         /// 文字的颜色 77         /// 
 78         private Color fontMColor = Color.Black; 79         [Description("文字的颜色")] 80         public Color FontMColor 81         { 82             get { return fontMColor; } 83             set 84             { 85                 fontMColor = value; 86             } 87         } 88  89         /// 
 90         /// 控件的文字提示 91         /// 
 92         private string textM = ""; 93         [Description("显示的文字")] 94         public string TextM 95         { 96             get { return textM; } 97             set 98             { 99                 textM = value;100             }101         }102       103 104     }105 }