System.Data.Common.DataAdapter.AssertReaderHandleFieldCount C# (CSharp) Method

        private void AssertReaderHandleFieldCount(DataReaderContainer readerHandler)
        {
#if DEBUG
            Debug.Assert(!_debugHookNonEmptySelectCommand || readerHandler.FieldCount > 0, "Scenario expects non-empty results but no fields reported by reader");
#endif
        }