image resolutin probem

Question

User-1532855418 posted

Hi all,

      I am facing a problem with image resolution. I need to set image resoution through my code.So client could download different resolutoin image. But when I set resolution whatever it it .It always shows a fixed size.exam If the original image 3.4mb and resolution 300dpi. If i set it to 200dpi it shows 344kb when i set setresolution 72 it shows 344 kb . I dont know where is the problem.Here is my code.

System.Drawing.Image oImg = System.Drawing.Image.FromFile(LinkHelper.ImageLocations.ImageServerLocation(Request.PhysicalApplicationPath, IId));

int width = oImg.Width;

int height = oImg.Height;

Bitmap bitmay = new Bitmap(oImg.Width, oImg.Height);

bitmay.SetResolution(200f, 200f);

Graphics g = Graphics.FromImage(bitmay);

g.DrawImage(oImg, new Rectangle(0, 0, width, height), new Rectangle(0, 0, width, height), GraphicsUnit.Pixel);

bitmay.Save(filePathServer, System.Drawing.Imaging.ImageFormat.Jpeg);