System.Data.Common.DataColumnMappingCollection.ValidateType C# (CSharp) Method

        private void ValidateType(object value)
        {
            if (null == value)
            {
                throw ADP.ColumnsAddNullAttempt(nameof(value));
            }
            else if (!ItemType.IsInstanceOfType(value))
            {
                throw ADP.NotADataColumnMapping(value);
            }
        }