Named Pipes Provider error: 40 - Could not open a connection to SQL Server in ASP.Net

Dear Programers,

I have two connectionstrings in my web.config file, one for server side and another for local server,

I have a problem to the serverside connection,

when i am st local server connectionstring than i it is working fine and when i am set online server string than this give title error message.

please programers help me out...!!!