Question

I have retrieved the pdf file from Database and linked it to a “a href” tag to open pdf file using link. Now I want to give the open/save dialog box before a pdf file opened . – in javascript(by using onclick event in “a” tag to call the javascript)

Answer 1

You have to set the content-disposition header using C# to get this behavior in a browser.

Read this for more info

How do I prompt a “Save As” dialog for an accepted mime type?

Downloading a File with a Save As Dialog in ASP.NET

Example

Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName);
Response.AddHeader("Content-Length", targetFile.Length.ToString);
Response.ContentType = "application/pdf";
Response.WriteFile(targetFile.FullName);