WinForm 如何自定义开关控件

先上结果：

由于WinForm中没有开关控件，需要自定义。下面就写我制作开关控件的步骤。

1、新建个WinForm程序，右键选择属性。

2、点击资源，将资源的类型修改为图像，然后将Button的图片复制进去（直接从文件夹里复制就行了）

3、新建用户控件，命名为OnOffButton。

在OnOffButton.cs中编写代码。

  

   

    

     

    
    

     

      using System;
     
    
   

    

     

    
    

     

      using System.Drawing;
     
    
   

    

     

    
    

     

      using System.Windows.Forms;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      namespace WindowsFormsApp1
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
    public enum CheckStyle
     
    
   

    

     

    
    

     

          {
     
    
   

    

     

    
    

     

              style1 = 0,
     
    
   

    

     

    
    

     

              style2 = 1,
     
    
   

    

     

    
    

     

              style3 = 2,
     
    
   

    

     

    
    

     

              style4 = 3,
     
    
   

    

     

    
    

     

              style5 = 4,
     
    
   

    

     

    
    

     

              style6 = 5
     
    
   

    

     

    
    

     

          };
     
    
   

    

     

    
    

     
    public partial class OnOffButton : UserControl
     
    
   

    

     

    
    

     

          {
     
    
   

    

     

    
    

     
        public OnOffButton()
     
    
   

    

     

    
    

     

              {
     
    
   

    

     

    
    

     

                  InitializeComponent();
     
    
   

    

     

    
    

     
            //设置Style支持透明背景色并且双缓冲
     
    
   

    

     

    
    

     
            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
     
    
   

    

     

    
    

     
            this.SetStyle(ControlStyles.DoubleBuffer, true);
     
    
   

    

     

    
    

     
            this.SetStyle(ControlStyles.ResizeRedraw, true);
     
    
   

    

     

    
    

     
            this.SetStyle(ControlStyles.Selectable, true);
     
    
   

    

     

    
    

     
            this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
     
    
   

    

     

    
    

     
            this.SetStyle(ControlStyles.UserPaint, true);
     
    
   

    

     

    
    

     
            this.BackColor = Color.Transparent;
     
    
   

    

     

    
    

     
            this.Cursor = Cursors.Hand;
     
    
   

    

     

    
    

     
            this.Size = new Size(87, 27);
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     
        bool isCheck = false;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        /// <summary>
     
    
   

    

     

    
    

     
        /// 是否选中
     
    
   

    

     

    
    

     
        /// </summary>
     
    
   

    

     

    
    

     
        public bool Checked
     
    
   

    

     

    
    

     

              {
     
    
   

    

     

    
    

     
            set { isCheck = value; this.Invalidate(); }
     
    
   

    

     

    
    

     
            get { return isCheck; }
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

              CheckStyle checkStyle = CheckStyle.style1;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        /// <summary>
     
    
   

    

     

    
    

     
        /// 样式
     
    
   

    

     

    
    

     
        /// </summary>
     
    
   

    

     

    
    

     
        public CheckStyle CheckStyleX
     
    
   

    

     

    
    

     

              {
     
    
   

    

     

    
    

     
            set { checkStyle = value; this.Invalidate(); }
     
    
   

    

     

    
    

     
            get { return checkStyle; }
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        protected override void OnPaint(PaintEventArgs e)
     
    
   

    

     

    
    

     

              {
     
    
   

    

     

    
    

     

                  Bitmap bitMapOn = null;
     
    
   

    

     

    
    

     

                  Bitmap bitMapOff = null;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
            if (checkStyle == CheckStyle.style1)
     
    
   

    

     

    
    

     

                  {
     
    
   

    

     

    
    

     

                      bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon1;
     
    
   

    

     

    
    

     

                      bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff1;
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     
            else if (checkStyle == CheckStyle.style2)
     
    
   

    

     

    
    

     

                  {
     
    
   

    

     

    
    

     

                      bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon2;
     
    
   

    

     

    
    

     

                      bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff2;
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     
            else if (checkStyle == CheckStyle.style3)
     
    
   

    

     

    
    

     

                  {
     
    
   

    

     

    
    

     

                      bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon3;
     
    
   

    

     

    
    

     

                      bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff3;
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     
            else if (checkStyle == CheckStyle.style4)
     
    
   

    

     

    
    

     

                  {
     
    
   

    

     

    
    

     

                      bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon4;
     
    
   

    

     

    
    

     

                      bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff4;
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     
            else if (checkStyle == CheckStyle.style5)
     
    
   

    

     

    
    

     

                  {
     
    
   

    

     

    
    

     

                      bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon5;
     
    
   

    

     

    
    

     

                      bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff5;
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     
            else if (checkStyle == CheckStyle.style6)
     
    
   

    

     

    
    

     

                  {
     
    
   

    

     

    
    

     

                      bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon6;
     
    
   

    

     

    
    

     

                      bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff6;
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

                  Graphics g = e.Graphics;
     
    
   

    

     

    
    

     

                  Rectangle rec = new Rectangle(0, 0, this.Size.Width, this.Size.Height);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
            if (isCheck)
     
    
   

    

     

    
    

     

                  {
     
    
   

    

     

    
    

     

                      g.DrawImage(bitMapOn, rec);
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     
            else
     
    
   

    

     

    
    

     

                  {
     
    
   

    

     

    
    

     

                      g.DrawImage(bitMapOff, rec);
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        private void OnOffButton_Click(object sender, EventArgs e)
     
    
   

    

     

    
    

     

              {
     
    
   

    

     

    
    

     

                  isCheck = !isCheck;
     
    
   

    

     

    
    

     
            this.Invalidate();
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
  
 

然后编写OnOffButton.Designer.cs代码。主要修改组件设计器生成的代码

  

   

    

     

    
    

     
     #region 组件设计器生成的代码
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        /// <summary> 
     
    
   

    

     

    
    

     
        /// 设计器支持所需的方法 - 不要修改
     
    
   

    

     

    
    

     
        /// 使用代码编辑器修改此方法的内容。
     
    
   

    

     

    
    

     
        /// </summary>
     
    
   

    

     

    
    

     
        private void InitializeComponent()
     
    
   

    

     

    
    

     

              {
     
    
   

    

     

    
    

     
            this.SuspendLayout();        
     
    
   

    

     

    
    

     
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
     
    
   

    

     

    
    

     
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
     
    
   

    

     

    
    

     
            this.Name = "myButtonCheck";
     
    
   

    

     

    
    

     
            this.Click += new System.EventHandler(this.OnOffButton_Click);
     
    
   

    

     

    
    

     
            this.ResumeLayout(false);
     
    
   

    

     

    
    

     

              }
     
    
  
 

然后生成解决方案。就可以在工具箱里看到组件了。

将组件拖入Form中就可以使用。

代码链接：https://download.csdn.net/download/hhhhhhhhhhwwwwwwwwww/14044575

文章来源: wanghao.blog.csdn.net，作者：AI浩，版权归原作者所有，如需转载，请联系作者。

原文链接：wanghao.blog.csdn.net/article/details/112347639