Try this code ::
public static byte[] ConvertImage(byte[] fromImage, string mimeType)
{
// Read the image from the byte variable into a bitmap variable
MemoryStream fromImageStream = new MemoryStream();
fromImageStream.Write(fromImage, 0, fromImage.Length);
Image image = Image.FromStream( fromImageStream, true ) ;
Bitmap bitmap = (Bitmap) image;
// Instantiate the encoder
EncoderParameters encoderParams = new EncoderParameters();
encoderParams.Param[0] = new EncoderParameter( Encoder.Quality, 50L );
ImageCodecInfo codecInfo = GetEncoderInfo( mimeType );
MemoryStream newImage = new MemoryStream();
// Convert the image to the new format
bitmap.Save( newImage, codecInfo, encoderParams );
// Read the new image into a byte variable
byte[] data = newImage.ToArray();
if (Logger.LogSwitch.LogInfo)
{
Logger.Write("ImageUtility", "EXITING ConvertImage method");
}
return data;
}
private static ImageCodecInfo GetEncoderInfo(String mimeType)
{
int j;
ImageCodecInfo[] encoders;
encoders = ImageCodecInfo.GetImageEncoders();
for(j = 0; j < encoders.Length; ++j)
{
if(encoders[j].MimeType == mimeType)
return encoders[j];
}
return null;
}