Galeria de imagenes

[Ciberyo]

Ya he la manera de hacerlo, el problema que tengo es que necesitaria que al redimensionar la miniatura mantuviese las proporciones para que no salga achatada, ¿alguien sabe como hacerlo?

Código:

      // Initialize variables

        string sSavePath;
        string sThumbExtension;
        int intThumbWidth;
        int intThumbHeight;

        // Set constant values

        sSavePath = "http://www.forosdelweb.com/images/";
        sThumbExtension = "_thumb";
        intThumbWidth = 160;
        intThumbHeight = 120;

        // If file field isn’t empty

        if (filUpload.PostedFile != null)
        {
            // Check file size (mustn’t be 0)

            HttpPostedFile myFile = filUpload.PostedFile;
            int nFileLen = myFile.ContentLength;
            if (nFileLen == 0)
            {
                lblOutput.Text = "No se ha subido ningun archivo.";
                return;
            }

            // Check file extension (must be JPG)

            if (System.IO.Path.GetExtension(myFile.FileName).ToLower() != ".jpg"&&
                    System.IO.Path.GetExtension(myFile.FileName).ToLower() != ".gif"&&
                        System.IO.Path.GetExtension(myFile.FileName).ToLower() != ".bmp")
            {
                lblOutput.Text = "La extension del archivo debe ser JPG, GIF o BMP";
                return;
            }
            string extension = System.IO.Path.GetExtension(myFile.FileName).ToLower();
            string idunico = DateTime.Now.ToFileTimeUtc().ToString();
            // Read file into a data stream

            byte[] myData = new Byte[nFileLen];
            myFile.InputStream.Read(myData, 0, nFileLen);

            // Make sure a duplicate file doesn’t exist.  If it does, keep on appending an 

            // incremental numeric until it is unique

            string sFilename = System.IO.Path.GetFileName(myFile.FileName);
 
                sFilename = System.IO.Path.GetFileNameWithoutExtension(myFile.FileName)
                                 +idunico+extension;

            // Save the stream to disk

            System.IO.FileStream newFile
                    = new System.IO.FileStream(Server.MapPath(sSavePath + sFilename),
                                               System.IO.FileMode.Create);
            newFile.Write(myData, 0, myData.Length);
            newFile.Close();

            // Check whether the file is really a JPEG by opening it

            System.Drawing.Image.GetThumbnailImageAbort myCallBack =
                           new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback);
            Bitmap myBitmap;
            try
            {
                myBitmap = new Bitmap(Server.MapPath(sSavePath + sFilename));

                // If jpg file is a jpeg, create a thumbnail filename that is unique.
                string sThumbFile = System.IO.Path.GetFileNameWithoutExtension(myFile.FileName)
                                                         + sThumbExtension + extension;
                    sThumbFile = System.IO.Path.GetFileNameWithoutExtension(myFile.FileName) +
                                  idunico + sThumbExtension + extension;

                // Save thumbnail and output it onto the webpage

                System.Drawing.Image myThumbnail
                        = myBitmap.GetThumbnailImage(int)(int)myBitmap.Width,
                                                     (int)(int)myBitmap.Height, myCallBack, IntPtr.Zero);
                myThumbnail.Save(Server.MapPath(sSavePath + sThumbFile));
                imgPicture.ImageUrl = sSavePath + sThumbFile;

                // Se muestra el resultado de la operación

                lblOutput.Text = "El archivo ha sido subido de forma satisfactoria";

                // Destroy objects

                myThumbnail.Dispose();
                myBitmap.Dispose();
            }
            catch (ArgumentException errArgument)
            {
                // The file wasn't a valid jpg file

                lblOutput.Text = "El archivo no es un JPG valido.";
                System.IO.File.Delete(Server.MapPath(sSavePath + sFilename));
            }
        }