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public Form1()
{
InitializeComponent();
RegionCopy();
}
void RegionCopy()
{
Image objImage = new Bitmap(Width, Height);
Graphics gd = Graphics.FromImage(objImage);
gd.CopyFromScreen(Location, new Point(0, 0), Size);
IntPtr dc1 = gd.GetHdc();
gd.ReleaseHdc(dc1);
this.BackgroundImage = objImage;
}