C#重新繪製按鈕

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 public  class ButtonX:Button     {                         protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)            {                base.OnPaint(e);                System.Drawing.Drawing2D.GraphicsPath path = new System.Drawing.Drawing2D.GraphicsPath();                path.AddEllipse(0, 0, this.Width, this.Height);                this.Region = new Region(path);                            }            protected override void OnMouseEnter(EventArgs e)            {                Graphics g = this.CreateGraphics();                g.DrawEllipse(new Pen(Color.Blue), 0, 0, this.Width, this.Height);                g.Dispose();            }                  }

然後產生解決方案，產生之後，工具箱裡會有如：

這個組件就是新的Button,你直接拖到表單上就好了，
這個是簡單的，效果不滿意可以隨便畫

C#重新繪製按鈕