.net SqlConnection not being closed even when within a using { }

Question

Please help!

Background info

I have a WPF application which accesses a SQL Server 2005 database. The database is running locally on the machine the appl

Answer 1

The SqlProvider used by the LINQ DataContext only closes the SQL connection (through SqlConnectionManager.DisposeConnection) if it was the one to open it. If you give an already-open SqlConnection object to the DataContext constructor, it will not close it for you. Thus, you should write:

using (SqlConnection conn = GetConnection())
using (DataContext db = new DataContext(conn))
{
    ... Code 
}