自定义控件

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;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WinForm测试
{
    public class MyButton : Control
    {
        public MyButton()
        {

        }

        protected override void OnPaint(PaintEventArgs pe)
        {
            //base.OnPaint(pe);
            Graphics g = pe.Graphics;

            if (backgroundImageM != null) //判断是否有背景图
            {
                g.DrawImage(backgroundImageM, this.ClientRectangle); //画出背景图参数1背景图，参数2默认的矩形
            }
            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
            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
        }

        /// <summary>
        /// 控件的默认图片 
        /// </summary> 
        private Image backgroundImageM = null;
        [Description("控件的默认图片")] //在属性中点击此属性的提示
        public Image BackgroundImageM
        {
            get { return backgroundImageM; }
            set
            {
                backgroundImageM = value;
            }
        }

        /// <summary>
        /// 控件的背景色
        /// </summary>
        private Color backColorM = Color.Transparent;
        [Description("控件的背景色")]
        public Color BackColorM
        {
            get { return backColorM; }
            set
            {
                backColorM = value;
            }
        }

        /// <summary>
        /// 用于显示文本的字体
        /// </summary>
        private Font fontM = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
        [Description("用于显示文本的字体")]
        public Font FontM
        {
            get { return fontM; }
            set
            {
                fontM = value;
            }
        }

        /// <summary>
        /// 文字的颜色
        /// </summary>
        private Color fontMColor = Color.Black;
        [Description("文字的颜色")]
        public Color FontMColor
        {
            get { return fontMColor; }
            set
            {
                fontMColor = value;
            }
        }

        /// <summary>
        /// 控件的文字提示
        /// </summary>
        private string textM = "";
        [Description("显示的文字")]
        public string TextM
        {
            get { return textM; }
            set
            {
                textM = value;
            }
        }
      

    }
}