public static void ReadIntBlock(OSGeo.GDAL.Band rasterBand,
                                 BandBlock<int>  block)
 {
     rasterBand.ReadRaster(block.XOffset, block.YOffset,
                           block.UsedPortionXSize, block.UsedPortionYSize,
                           block.Buffer,
                           block.UsedPortionXSize, block.UsedPortionYSize,
                           block.PixelSpace, block.LineSpace);
 }