System.Data.DataRow.SetAdded C# (CSharp) Method

        public void SetAdded()
        {
            if (RowState == DataRowState.Unchanged)
            {
                _table.SetOldRecord(this, -1);
            }
            else
            {
                throw ExceptionBuilder.SetAddedAndModifiedCalledOnnonUnchanged();
            }
        }

 /// <summary>
 /// 更新记录状态
 /// </summary>
 /// <param name="dataRow">记录</param>
 /// <param name="updateType">操作类型</param>
 private void SetRowState(DataRow dataRow, UpdateType updateType)
 {
     if (dataRow.RowState != DataRowState.Unchanged) return;
     if (updateType == UpdateType.Add)
         dataRow.SetAdded();
     if (updateType == UpdateType.Modify)
         dataRow.SetModified();
 }