使用C# 编写扩展存储过程

Pen penBlack = new Pen(Color.Black, 1);

Point ptStart = new Point(0, 0);

Point ptEnd = new Point(this.Width - 1, 0);

e.Graphics.DrawLine(penBlack, ptStart, ptEnd);

ptStart = new Point(0, 0);

ptEnd = new Point(0, this.Height);

e.Graphics.DrawLine(penBlack, ptStart, ptEnd);

Pen penWhite = new Pen(Color.White, 1);

ptStart = new Point(this.Width - 1, 0);

ptEnd = new Point(this.Width - 1, this.Height);

e.Graphics.DrawLine(penWhite, ptStart, ptEnd);

ptStart = new Point(0, this.Height - 1);

ptEnd = new Point(this.Width, this.Height - 1);

e.Graphics.DrawLine(penWhite, ptStart, ptEnd);

SolidBrush brushFill = new SolidBrush(PercentBackColor);

Rectangle rcFill = new Rectangle(2, 2, iCurPercent * (this.Width - 3) / 100, this.Height - 3);

e.Graphics.FillRectangle(brushFill, rcFill);