c# resize image from byte array
public static byte[] Resize2Max50Kbytes(byte[] byteImageIn)
{
byte[] currentByteImageArray = byteImageIn;
double scale = 1f;
if (!IsValidImage(byteImageIn))
{
return null;
}
MemoryStream inputMemoryStream = new MemoryStream(byteImageIn);
Image fullsizeImage = Image.FromStream(inputMemoryStream);
while (currentByteImageArray.Length > 50000)
{
Bitmap fullSizeBitmap = new Bitmap(fullsizeImage, new Size((int)(fullsizeImage.Width * scale), (int)(fullsizeImage.Height * scale)));
MemoryStream resultStream = new MemoryStream();
fullSizeBitmap.Save(resultStream, fullsizeImage.RawFormat);
currentByteImageArray = resultStream.ToArray();
resultStream.Dispose();
resultStream.Close();
scale -= 0.05f;
}
return currentByteImageArray;
}