Hi,  

I am working on an ASP.NET 1.1 application that creates thumbnails using the
code below.

Problem is that the code loads an entire file into memory to instantiate the
image (file.Data is a memorystream).

This obviously isnt feasible for large files.  Does anybody know of a
thumbnail component that doesn't load the entire file into memory?

Image fullImage = Image.FromStream(file.Data);
            // maximum height or width is 100
           
            double imgWidth = Convert.ToDouble(fullImage.Width);
            double imHeight = Convert.ToDouble(fullImage.Height);
           
            double divisor = 0;
            if(fullImage.Height > fullImage.Width)
            {
                divisor = (100/imHeight);
            }
            else
            {
                divisor = (100/imgWidth);
            }           
            Image thumbnail =
fullImage.GetThumbnailImage(Convert.ToInt32(imgWidth*divisor),
                Convert.ToInt32(imHeight*divisor),
                new System.Drawing.Image.GetThumbnailImageAbort(rtnVal.ThumbnailCallback),
                IntPtr.Zero);