Does SqlCommand.Dispose close the connection?

Question

Can I use this approach efficiently?

using(SqlCommand cmd = new SqlCommand(\"GetSomething\", new SqlConnection(Config.ConnectionString))
{
    cmd.Connection         


        

Answer 1

I use this pattern. I have this private method somewhere in my app:

private void DisposeCommand(SqlCommand cmd)
{
    try
    {
        if (cmd != null)
        {
            if (cmd.Connection != null)
            {
                cmd.Connection.Close();
                cmd.Connection.Dispose();
            }
            cmd.Dispose();
        }
    }
    catch { } //don't blow up
}

Then I always create SQL commands and connections in a try block (but without being wrapped in a using block) and always have a finally block as:

    finally
    {
        DisposeCommand(cmd);
    }

The connection object being a property of the command object makes a using block awkward in this situation - but this pattern gets the job done without cluttering up your code.