Hi Team,

I have used below link functionality in my application.

Disable Buttons on PostBack using JavaScript in ASP.Net

It is working fine for other button postback but not for Download button click.

When i clicked on button it shows text as [Downloading.. ] but after file downloads it still rermains same as [Downloading..] and button in disabled state.

Once file donwloads button should comes in its normal format.

Below is my code. 

string filePath = @"D:\PdfFile.pdf";
Response.ContentType = ContentType;
Response.AppendHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(filePath));
Response.WriteFile(filePath);
Response.End();