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 = 1;

        [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