Hisamsmuthu,
When you use PrintDocument.Print() you are printing on the server. When you deploy your application in IIS this printing will happen on the server computer that is hosting your application.
You cannot print directly to the client computer from a web application. The best you could do is provide some HTML document using a print media CSS type. Then if the user decides, he might print it in his browser.
When you publish your website to a server, it does not have any printer installer and that's why you get such error. Your code is trying to print to a printer installed at the server not at the client.
If you want to print the report to client printers, then try below article.
