SQL Server - Error in compiling a forum source code. plz help.

From what I've noticed here, You've accidentally either not set the project startup file, or set it to a class and not the page directly - Do this - right click on the page you want to be the initial startup page and set it to be the startup page.

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

Try to set the Default Start Page option in Project setting(Set As Start Page). The project, you've downloaded.. gives you the dll files when built, which you can access from class files.

It sounds to me like you need to change your Startup project. You probably cannot run your downloaded .dll as a startup project. You will need to incorporate it into another solution. Your other solution be it a web project or win32 app will need to be the StartUp project.

File Menu > Project > Set as StartUp Project.

http://forums.asp.net/t/1024955.aspx

Hello Boy,

MAKE SURE YOU'VE SET YOUR START PAGE
MAKE SURE YOU'VE SET YOU START PROJECT AS WELL!!!!

I know alot of people who have had this error for my reason above, and that was they had forgotten to set a start project.

Try the following:
1. Right-click on the project that contains the login.aspx file and select Set as Startup Project
2. Right-click on the login.aspx file and select Set as Start Page
3. Press F5 to debug your application.
You can probably delete your WinForms project from the solution at this point.

If that doesn't work, or you don't see those options, then it's possible that your Visual Studio environment is not setup correct. In that case, try the following:
1. Start with a new VS session.
2. Create a Web application by going to File/New Project/C#/ASP.NET Web Application.
3. In the Solution Explorer, right-click on the Solution and select Add/Existing Project
4. Select the project containing the login.aspx file
5. Continue with the above advice.

Hope this helps.