实现效果:

知识运用:
Graphics类的CopyFromScreen方法 //该方法用于执行颜色数据(对应于由像素组成的矩形)从屏幕到Graphics的绘图画面的为块传输
public void CopyFromScreen(int sourceX, int sourceY, int destinationX, int destinationY, Size blockRegionSize);

实现代码:
private Bitmap CaptureNoCursor()
{
Bitmap bmap = new Bitmap(Screen.GetWorkingArea(this).Width,Screen.GetWorkingArea(this).Height);
using(Graphics g=Graphics.FromImage(bmap))
{
g.CopyFromScreen(0,0,0,0,bmap.Size);
}
return bmap;
}
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