Question

I’m so stuck on something i thought would be easy.
I have a DLL that returns an Image object.
I just cant figure out how to display that image on a webpage.

I’ve tried a few ways, and google a million different variations.

Is it not possible to just bind an Image object to an element on the page like an HtmlImage or a simple img?

Or do i need to convert the Image to a Stream? or a Bitmap? I’m really stuck!

Any help appreciated…..

V

Answer 1

With Asp.Net WebForm, the easiest way is to create a custom ashx file.

In Visual Studio, create a new Custom Handler (I’m not sure of the name of the template in Visual Studio). This will create a .ashx file.

In the code of this handler, write something like (does not have VS under the hand to test the syntax) :

public void ProcessRequest(System.Web.HttpContext context)
{

   byte[] raw; 
   using(var ms = new MemoryStream()){
       Image myImage = GetFromDll();
       myImage.Save(ms, ImageFormat.Png);
       raw=ms.ToArray();
   }
   context.Response.ContentType = "image/png";
   context.Response.BinaryWrite(raw);
}

Then, in your browser, navigate to http://yourserver/app/yourhandler.ashx.

You can if you want add url parameter, and get it from the Request.QueryString collection