Question

I have a resource handler that is Response.WriteFile(fileName) based on a parameter passed through the querystring. I am handling the mimetype correctly, but the issue is in some browsers, the filename comes up as Res.ashx (The name of the handler) instead of MyPdf.pdf (the file I am outputting). Can someone inform me how to change the name of the file when it is sent back to the server? Here is my code:

// Get the name of the application string application = context.Request.QueryString['a']; string resource = context.Request.QueryString['r'];  // Parse the file extension string[] extensionArray = resource.Split('.'.ToCharArray());  // Set the content type if (extensionArray.Length > 0)     context.Response.ContentType = MimeHandler.GetContentType(         extensionArray[extensionArray.Length - 1].ToLower());  // clean the information application = (string.IsNullOrEmpty(application)) ?     '../App_Data/' : application.Replace('..', '');  // clean the resource resource = (string.IsNullOrEmpty(resource)) ?     '' : resource.Replace('..', '');  string url = './App_Data/' + application + '/' + resource;   context.Response.WriteFile(url); 

Answer 1

Extending from Joel’s comment, your actual code would look something like this:

context.Response.AddHeader('content-disposition', 'attachment; filename=' + resource);