BeginExecuteNonQuery without EndExecuteNonQuery

Question

I have the following code:

using (SqlConnection sqlConnection = new SqlConnection(\"blahblah;Asynchronous Processing=true;\")
{
    using (SqlCommand command         


        

Answer 1

In this case the using statements won't be necessary because you should manually close it yourself rather than allowing the syntactic sugar dispose it for you (i.e. at the }). It should be as simple as this to ensure you don't have leaks.

    using (SqlConnection sqlConnection = new SqlConnection("blahblah;Asynchronous Processing=true;")
    {
        using (SqlCommand command = new SqlCommand("someProcedureName", sqlConnection))
        {
            sqlConnection.Open();
            command.CommandType = CommandType.StoredProcedure;
            command.Parameters.AddWithValue("@param1", param1);
            command.BeginExecuteNonQuery((ar) =>
            {
                var cmd = (SqlCommand)ar.AsyncState;
                cmd.EndExecuteNonQuery(ar);
                cmd.Connection.Close();
            }, command);
        }
    }

As you can see the lambda expression that is fired once the command is finished (no matter how long it takes) will do all the closing for you.