private void Form1_Paint(object sender, PaintEventArgs e)
{
//1、建立畫布(Graphics)
//2、繪圖(Pen等)
//3、影象處理
Graphics ghs = e。Graphics; //獲得畫布
//用寬度位10個畫素紅色的筆
Pen pen = new Pen(Color。Red, 10);
//筆的樣式
pen。DashStyle = System。Drawing。Drawing2D。DashStyle。DashDot;
//畫直線的座標
ghs。DrawLine(pen, 10, 10, 100, 100);
pen。DashPattern = new float[] { 2, 1 };//設定短劃線和空白部分的陣列
ghs。DrawLine(pen, 50, 50, 200, 50);
//畫箭頭,只對不封閉的曲線有用
pen。DashStyle = System。Drawing。Drawing2D。DashStyle。Solid; //恢復實線
pen。EndCap = System。Drawing。Drawing2D。LineCap。ArrowAnchor;//定義線尾的樣式為箭頭
ghs。DrawLine(pen, 80, 80, 200, 80);
ghs。Dispose();
ghs。Dispose();
}