C＃：如何截取屏幕一部分的屏幕截图

Question

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TakeScreenshot(new Rectangle(0,0,100,100), "output.jpg");

Answer 1

使用以下内容：

Rectangle rect = new Rectangle(0, 0, 100, 100);
Bitmap bmp = new Bitmap(rect.Width, rect.Height, PixelFormat.Format32bppArgb);
Graphics g = Graphics.FromImage(bmp);
g.CopyFromScreen(rect.Left, rect.Top, 0, 0, bmp.Size, CopyPixelOperation.SourceCopy);
bmp.Save(fileName, ImageFormat.Jpeg);

Answer 2

这是捕获屏幕的代码。 将值更改为所需的大小。

 Bitmap printscreen = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);  

 Graphics graphics = Graphics.FromImage(printscreen as Image);  

 graphics.CopyFromScreen(0, 0, 0, 0, printscreen.Size);  

 printscreen.Save(@"C:\printscreen.jpg", ImageFormat.Jpeg);

或make方法将返回您捕获的图像，如下所示：

Image CaptureScreen(int sourceX, int sourceY, int destX, int destY, 
            Size regionSize)
{
    Bitmap bmp = new Bitmap(regionSize.Width, regionSize.Height);
    Graphics g = Graphics.FromImage(bmp);
    g.CopyFromScreen(sourceX, sourceY, destX, destY, regionSize);
    return bmp;
}
 ......
 // call 
 Image image = CaptureScreen(sourceX, sourceY,  destX,  destY, regionSize);
 image.Save(@"C:\Somewhere\screen.jpg);

Answer 3

使用Graphics.CopyFromScreen方法。 Google提供了本教程 。

Answer 4

您是否检查过Graphics.CopyFromScreen方法？