System.Data.Common.DbDataAdapter.GetParameterSourceVersion C# (CSharp) Method

        private static DataRowVersion GetParameterSourceVersion(StatementType statementType, IDataParameter parameter)
        {
            switch (statementType)
            {
                case StatementType.Insert: return DataRowVersion.Current;  // ignores parameter.SourceVersion
                case StatementType.Update: return parameter.SourceVersion;
                case StatementType.Delete: return DataRowVersion.Original; // ignores parameter.SourceVersion
                case StatementType.Select:
                case StatementType.Batch:
                    throw ADP.UnwantedStatementType(statementType);
                default:
                    throw ADP.InvalidStatementType(statementType);
            }
        }