error is network related or instance specific error occurred while establishing a connection with SQL Server. The Server was not found or was not accessible. Verify that the instance name is correct and SQL Server is configured to allow remote connections.
my server name is : laptop
my connection string is: Data Source=Laptop;Initial Catalog=itassetmgt;Integrated Security=True
ASPNETDB.MDF file's data source is:Data Source=.\SQLEXPRESS;AttachDbFilename="C:\Users\Kamesh Biniwale\Documents\Visual Studio 2010\WebSites\login\App_Data\ASPNETDB.MDF";Integrated Security=True;User Instance=True