.net winform自定义开关按钮控件

按钮显示效果

源码下载地址: https://pan.baidu.com/s/1KDcjxkbBgDBehCNtx62pWw 提取码: 9csn

核心代码

public partial class myButton : UserControl
{
    public enum CheckStyle
    {
        style1 = 0,
        style2 = 1,
        style3 = 2,
        style4 = 3,
        style5 = 4,
        style6 = 5
    };
    public myButton()
    {
        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 = Properties.Resources.btncheckon1;
            bitMapOff = Properties.Resources.btncheckoff1;
        }
        else if (checkStyle == CheckStyle.style2)
        {
            bitMapOn = Properties.Resources.btncheckon2;
            bitMapOff = Properties.Resources.btncheckoff2;
        }
        else if (checkStyle == CheckStyle.style3)
        {
            bitMapOn = Properties.Resources.btncheckon3;
            bitMapOff = Properties.Resources.btncheckoff3;
        }
        else if (checkStyle == CheckStyle.style4)
        {
            bitMapOn = Properties.Resources.btncheckon4;
            bitMapOff = Properties.Resources.btncheckoff4;
        }
        else if (checkStyle == CheckStyle.style5)
        {
            bitMapOn = Properties.Resources.btncheckon5;
            bitMapOff = Properties.Resources.btncheckoff5;
        }
        else if (checkStyle == CheckStyle.style6)
        {
            bitMapOn = Properties.Resources.btncheckon6;
            bitMapOff = 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 myButtonCheck_Click(object sender, EventArgs e)
    {
        isCheck = !isCheck;
        this.Invalidate();
    }
}