ASP.NET Image uploading with Resizing

Question

I have an aspx page which will upload images to server harddisk from client pc

But now i need to change my program in such a way that it would allow me to resize the

Answer 1

This is how I did in my project, based on your condition (height/width) you can change the parameter ie(MaxHeight)

View Blog Article : How to Resize image while uploading in asp.net using c#

 public static System.Drawing.Image ScaleImage(System.Drawing.Image image, int maxHeight)
        {
            var ratio = (double)maxHeight / image.Height;

            var newWidth = (int)(image.Width * ratio);
            var newHeight = (int)(image.Height * ratio);

            var newImage = new Bitmap(newWidth, newHeight);
            using (var g = Graphics.FromImage(newImage))
            {
                g.DrawImage(image, 0, 0, newWidth, newHeight);
            }
            return newImage;
        }

---

On Button click:

protected void Button1_Click(object sender, EventArgs e)
{
  lblmsg.Text="";
  if ((File1.PostedFile != null) && (File1.PostedFile.ContentLength > 0))
  {
    Guid uid = Guid.NewGuid();
    string fn = System.IO.Path.GetFileName(File1.PostedFile.FileName);
    string SaveLocation = Server.MapPath("LogoImagesFolder") + "\\" + uid+fn;
    try
    {
      string fileExtention = File1.PostedFile.ContentType;
      int fileLenght = File1.PostedFile.ContentLength;
      if (fileExtention == "image/png" || fileExtention == "image/jpeg" || fileExtention == "image/x-png")
      {
        if (fileLenght <= 1048576)
        {
          System.Drawing.Bitmap bmpPostedImage = new System.Drawing.Bitmap(File1.PostedFile.InputStream);
          System.Drawing.Image objImage = ScaleImage(bmpPostedImage, 81);
          objImage.Save(SaveLocation,ImageFormat.Png);
          lblmsg.Text = "The file has been uploaded.";
          lblmsg.Style.Add("Color", "Green");
         }
         else 
         {
           lblmsg.Text = "Image size cannot be more then 1 MB.";
           lblmsg.Style.Add("Color", "Red");
          }
       }
     else {
             lblmsg.Text = "Invaild Format!";
             lblmsg.Style.Add("Color", "Red");
           }
     }
     catch (Exception ex)
       {
          lblmsg.Text= "Error: " + ex.Message;
          lblmsg.Style.Add("Color", "Red");
       }
   }
 }