public static Image FromFile(string filename)
{
if (string.IsNullOrEmpty(filename))
{
throw new ArgumentNullException("filename");
}
int width, height;
PixelFormat pixelFormat;
IntPtr native = LibIGraph.BitmapFromFile(filename, out width, out height, out pixelFormat);
return(new Bitmap(native, width, height, pixelFormat));
}