ado.net Closing Connection when using “using” statement

Question

I am doing my database access methods to SQL Server like this

  using (SqlConnection con = new SqlConnection(//connection string)
  {
    using (SqlCommand c         


        

Answer 1

The using will take care of it for you. Under the hood, SqlConnection.Dispose() calls the SqlConnection.Close() method, and SqlCommand.Dispose() calls SqlCommand.Close().

As additional background, a using statement is syntactic sugar for a try ... finally that disposes the IDisposable object in the finally.