Start File Download By Client From Javascript Call In C#/asp.net Page?

I need to initiate file download from ASP.NET page from javascript code. What would be my best option? Is it possible to call a webservice to do so, or somehow call usual event han

Solution 1:

You can use a hidden IFRAME element and initiate a file download request, which does give the feeling for a AJAX file download.

While the file is being downloaded you can do other activity in your form on client side.

Yes you can call a webservice or aspx page or http handler as well in this URL

functiondowloadFileJS()  {
      // Create an IFRAME.var iframe = document.createElement("iframe");

      // Point the IFRAME to GenerateFile
      iframe.src = "GenerateFile.aspx?yourQueryString=myQueryString";

      // This makes the IFRAME invisible to the user.
      iframe.style.display = "none";

      // Add the IFRAME to the page.  This will trigger a request to GenerateFile now.document.body.appendChild(iframe); 
    }

Solution 2:

You can use Javascript to create an iframe to the file you want to download. Have a look at this answer: Starting file download with JavaScript