How do we call File server path along with service account during button click event.

I created website and used below code. Called website url in button event.

string folder = @"\\RMN\T001\PROC\MATERIALDB\";
string fileName="MAT01210821.png";
string filePath=Path.Combine(folder, fileName) ;
Response.ContentType = ("application/pdf");
Response.AddHeader("content-disposition", "attachment; filename=" + fileName);
Response.TransmitFile(filePath);

create new  app pool in IIS, and apply service account instead of using web config file.

Map that new pool in that website.

It's working perfect.

Thanks.