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

1 1  private Color _BorderColor = Color.Black;
2 2 
3 3         [Browsable(true), Description("边框颜色"), Category("自定义分组")]
4 4         public Color BorderColor
5 5         {
6 6             get { return _BorderColor; }
7 7             set
8 8             {
9 9                 _BorderColor = value;
1010                 this.Invalidate();
1111             }
1212         }
1313 
1414         private int _BorderSize = 1;
1515 
1616         [Browsable(true), Description("边框粗细"), Category("自定义分组")]
1717         public int BorderSize
1818         {
1919             get { return _BorderSize; }
2020             set 
2121             { 
2222                 _BorderSize = value;
2323                 this.Invalidate();
2424             }
2525         }

3.控件代码继承Panel并重写OnPaint方法

1 1         /// <summary>
2 2         /// 重写OnPaint方法
3 3         /// </summary>
4 4         /// <param name="e"></param>
5 5         protected override void OnPaint(PaintEventArgs e)
6 6         {
7 7             ControlPaint.DrawBorder(e.Graphics,
8 8                             this.ClientRectangle,
9 9                             this._BorderColor,
1010                             this._BorderSize,
1111                             ButtonBorderStyle.Solid,
1212                             this._BorderColor,
1313                             this._BorderSize,
1414                             ButtonBorderStyle.Solid,
1515                            this._BorderColor,
1616                             this._BorderSize,
1717                             ButtonBorderStyle.Solid,
1818                             this._BorderColor,
1919                             this._BorderSize,
2020                             ButtonBorderStyle.Solid);
2121         }

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