System.Data.DataTableReader.GetDouble C# (CSharp) Method

        public override double GetDouble(int ordinal)
        {
            ValidateState(nameof(GetDouble));
            ValidateReader();
            try
            {
                return (double)_currentDataRow[ordinal];
            }
            catch (IndexOutOfRangeException e)
            { // thrown by DataColumnCollection
                ExceptionBuilder.TraceExceptionWithoutRethrow(e);
                throw ExceptionBuilder.ArgumentOutOfRange(nameof(ordinal));
            }
        }