ASP.NET MVC update

I have an Employee object that has an image property. The image class contains the image metadata as the image title and image file name.

If I upload a new image for an employee on an asynchronous path without a complete message, the new image doesn't appear on the page.

I am using GUID to refer to the image file to avoid page caching.

I am changing the image like this:

ctrEmployee employee = Repository.Get (PassedItemID);

        if (employee.ctrImage != null)
        {
            string fullFileName = serverFolder + employee.ctrImage.FileName;

            FileInfo TheFile = new FileInfo(fullFileName);

            if (TheFile.Exists)
            {
                TheFile.Delete();
            }


            fileName = Guid.NewGuid() + ".jpg";
            employee.ctrImage.FileName = fileName;
        }

        resizedBmp.Save(string.Format("{0}{1}", serverFolder, fileName), System.Drawing.Imaging.ImageFormat.Jpeg);

        Repository.Edit<ctrEmployee>(employee);

        ImageID = employee.Image.Value;


        return PartialView(UserControlPaths.Thumbnail, new ThumbnailDataModel(employee.Image.Value, 150, 150));

      

        
        
        
      

    

Partial view has an image tag that gets the stored image url string which is the GUID.

Does anyone have an idea what I am doing wrong?