public static ImageInfo GetImageInformation(string fileName)
{
var result = new ImageInfo();
result.Width = 0;
result.Height = 0;
result.FormattedDimensions = "unknown";
result.FormattedSize = "unknown";
result.SizeInBytes = 0;
var fullName = string.Empty;
if (fileName != null)
{
fullName = Path.Combine(HttpContext.Current.Request.PhysicalApplicationPath, fileName.Replace("/", "\\"));
}
if (File.Exists(fullName))
{
var f = new FileInfo(Path.Combine(HttpContext.Current.Request.PhysicalApplicationPath, fileName));
if (f != null)
{
result.SizeInBytes = f.Length;
if (result.SizeInBytes < 1024)
{
result.FormattedSize = result.SizeInBytes + " bytes";
}
else
{
if (result.SizeInBytes < 1048576)
{
result.FormattedSize = Math.Round(result.SizeInBytes / 1024, 1) + " KB";
}
else
{
result.FormattedSize = Math.Round(result.SizeInBytes / 1048576, 1) + " MB";
}
}
}
f = null;
if (File.Exists(fullName))
{
Image WorkingImage;
WorkingImage = Image.FromFile(fullName);
if (WorkingImage != null)
{
result.Width = WorkingImage.Width;
result.Height = WorkingImage.Height;
result.FormattedDimensions = result.Width.ToString(CultureInfo.InvariantCulture) + " x " +
result.Height.ToString(CultureInfo.InvariantCulture);
}
WorkingImage.Dispose();
WorkingImage = null;
}
}
return(result);
}
public static bool CompressJpeg(string filePath, long quality)
{
bool result = true;
string fullFile = Path.Combine(HttpContext.Current.Request.PhysicalApplicationPath, filePath);
if (File.Exists(fullFile) == true)
{
if (quality < 1L)
{
quality = 1L;
}
else
{
if (quality > 100L)
{
quality = 100L;
}
}
System.Drawing.Image WorkingImage;
WorkingImage = System.Drawing.Image.FromFile(filePath);
System.Drawing.Image FinalImage;
FinalImage = new System.Drawing.Bitmap(WorkingImage.Width, WorkingImage.Height, PixelFormat.Format24bppRgb);
Graphics G = Graphics.FromImage(FinalImage);
G.InterpolationMode = InterpolationMode.HighQualityBicubic;
G.PixelOffsetMode = PixelOffsetMode.HighQuality;
G.CompositingQuality = CompositingQuality.HighQuality;
G.SmoothingMode = SmoothingMode.HighQuality;
G.DrawImage(WorkingImage, 0, 0, WorkingImage.Width, WorkingImage.Height);
// Dispose working Image so we can save with the same name
WorkingImage.Dispose();
WorkingImage = null;
// Compression Code
ImageCodecInfo myCodec = GetEncoderInfo("image/jpeg");
Encoder myEncoder = Encoder.Quality;
EncoderParameters myEncoderParams = new EncoderParameters(1);
EncoderParameter myParam = new EncoderParameter(myEncoder, quality);
myEncoderParams.Param[0] = myParam;
// End Compression Code
File.Delete(fullFile);
FinalImage.Save(fullFile, myCodec, myEncoderParams);
FinalImage.Dispose();
FinalImage = null;
}
else
{
result = false;
}
return(result);
}
