Grid-view export to PDF file work on localhost but not working in live server

Check the event viewer and give an indication of the error.

I'd suggest using Fody.Costura to embed your DLLs directly into your executables.

With the limited information its hard to say, but if you are saving the file to disk you may not have permission on the server to actually save the file. If this is the case, you would have to add security permission for the application pool you are using to the folder you are writing to.