How to convert website to webapplication in .NET?

Consider you have Solution and website is exist in that solution then
1. Added WebApplication project in existing solution. (That you have one website and one WebApplication in that solution)
2. Copy all files from website to webApplication with keep same structure as website.
3. Then right click on the webApplication and click on “Convert to Web Application“. That will add .designer.cs file for all .aspx pages and ascx pages.
4. Add namespace to all .aspx and .ascx files. (namespace will add in .aspx file in Inherits attribute of page dirsctive, .aspx.cs and .designer.cs file)
5. Then delete website from that solution.

And your webApplication will created.