C# WinForm窗体控件Panel修改边框颜色以及边框宽度方法

C# WinForm窗体控件Panel修改边框颜色以及边框宽度方法

1.新建组件这里可以自定义一个Panel控件起名为PanelEx

2.增加一个BoderColor属性和BoderSize属性

  private Color _BorderColor = Color.Black;

         [Browsable(true), Description("边框颜色"), Category("自定义分组")]
         public Color BorderColor
         {
             get { return _BorderColor; }
             set
             {
                 _BorderColor = value;
                 this.Invalidate();
             }
         }

         private int _BorderSize = ;

         [Browsable(true), Description("边框粗细"), Category("自定义分组")]
         public int BorderSize
         {
             get { return _BorderSize; }
             set
             {
                 _BorderSize = value;
                 this.Invalidate();
             }
         }

3.控件代码继承Panel并重写OnPaint方法

         /// <summary>
         /// 重写OnPaint方法
         /// </summary>
         /// <param name="e"></param>
         protected override void OnPaint(PaintEventArgs e)
         {
             ControlPaint.DrawBorder(e.Graphics,
                             this.ClientRectangle,
                             this._BorderColor,
                             this._BorderSize,
                             ButtonBorderStyle.Solid,
                             this._BorderColor,
                             this._BorderSize,
                             ButtonBorderStyle.Solid,
                            this._BorderColor,
                             this._BorderSize,
                             ButtonBorderStyle.Solid,
                             this._BorderColor,
                             this._BorderSize,
                             ButtonBorderStyle.Solid);
         }

4.添加测试窗体并添加PanelEx控件

编译运行测试

程序源代码工程文件下载