C# 截图 窗体截图 屏幕截图

///截取电脑全屏

        private void button2_Click(object sender, EventArgs e)
        {
            Bitmap myImage = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
            Graphics g = Graphics.FromImage(myImage);
            g.CopyFromScreen(new Point(0, 0), new Point(0, 0), new Size(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height));
            IntPtr dc1 = g.GetHdc();
            g.ReleaseHdc(dc1);
            myImage.Save(@"c:\screen0.jpg");
        }

///截取窗体屏幕

        private void button3_Click(object sender, EventArgs e)
        {
            Bitmap myImage = new Bitmap(this.Width, this.Height);
            Graphics g = Graphics.FromImage(myImage);
            g.CopyFromScreen(new Point(this.Location.X, this.Location.Y), new Point(0, 0), new Size(this.Width, this.Height));
            IntPtr dc1 = g.GetHdc();
            g.ReleaseHdc(dc1);
            myImage.Save(@"c:\screen1.jpg");
        }