本文实例为大家分享了C# picturebox实现画图功能的具体代码，供大家参考，具体内容如下

在Form上添加 一个pictureBox,一个button控件

如图所示：

这样我们的绘画面板就弄好了，把pictureBox的dock属性设置为fill，按键为清屏的作用。

private Point p1, p2;//定义两个点（启点，终点）private static bool drawing=false;//设置一个启动标志private void pictureBox1_MouseDown(object sender, MouseEventArgs e) { p1 = new Point(e.X, e.Y); p2 = new Point(e.X, e.Y); drawing = true; } private void pictureBox1_MouseUp(object sender, MouseEventArgs e) { drawing = false; }private void pictureBox1_MouseMove(object sender, MouseEventArgs e) { Graphics g = pictureBox1.CreateGraphics(); if(e.Button ==MouseButtons.Left) { if (drawing) { //drawing = true; Point currentPoint = new Point(e.X, e.Y); g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;//消除锯齿 g.DrawLine(new Pen(Color.Blue, 2), p2,currentPoint); p2.X = currentPoint.X; p2.Y = currentPoint.Y; } } }//清屏操作private void button1_Click(object sender, EventArgs e){ Graphics g = pictureBox1.CreateGraphics(); g.Clear(Color.White);}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。