c# - Correct usage of Asp.Net Response.TransmitFile and Response.End()

Question

What is the correct usage of this code?

httpContext.Response.AddHeader("Content-Disposition", "inline; filename=" + HttpUtility.UrlPathEncode(fileName));
httpContext.Response.ContentType = "image/png";
httpContext.Response.AddHeader("Content-Length", new FileInfo(physicalFileName).Length.ToString());
httpContext.Response.TransmitFile(physicalFileName);
httpContext.Response.Flush();
httpContext.Response.End();  //Use it or not?

Is it really good to use .Flush() and .End()?

According to this you should never ever use Response.End() (only in error or hacking scenarios)

But in some of the answers the .End() is reconmended...?

Like in this article.

So it is appropriate to use Response.End or not?

Answer 1

According to Thomas Marquardt, you should never use Response.End(). Instead you should use Context.ApplicationInstance.CompleteRequest(). Check this article as well, it's from Microsoft KB, recommending the use of Application.CompleteRequest() instead Response.End().