绘制一条连接由坐标对指定的两个点的线条。
[C#]
public void DrawLinePoint(PaintEventArgs e)
{
// Create pen.
Pen blackPen = new Pen(Color.Black, 3);
// Create points that define line.
Point point1 = new Point(100, 100);
Point point2 = new Point(500, 100);
// Draw line to screen.
e.Graphics.DrawLine(blackPen, point1, point2);
}