Hi Kesav,
To change the image resolution of the print page, you need to call the SetResolution method over the grid imange before drawing the grid image. Please try the attached sample and let me know if this helps.
[c#]
gridBM.SetResolution(3000f,3000f);
g.DrawImage(gridBM, destRect, srcRect, gu);
Sample :
PrintToFitColumns.zipBest regards,
Haneef