如何从DataRow中获得原始DataColumn的价值呢？ [英] How to get original DataColumn value from DataRow?

问题描述

我有一个数据表，我想找出原始列值的所有修改过的数据行。

I have a DataTable and i want to figure out the Original column value for all the modified data rows.

我使用下面的方法来获取原单列值的DataRow被修改之前

I am using following approach to get the Orginal column value before the DataRow was modified

DataRow[] dataRowArray = dataTableInstance.Select(null,null,DataViewRowState.OriginalRows);
DataRow originalDataRow = dataRowArray[rowIndex][columnIndex, DataRowVersion.Original] 

请指出我究竟做错了什么？以上code不给我原始列，而是给了我最新的修改列的值。

Please point out what am I doing wrong here ? Above code does not give me the Original column , instead it gives me the latest modified column value.

感谢。
尼基尔

Thanks.
Nikhil

推荐答案

当你调用原始值都将丢失的AcceptChanges （当你调用它通常被称为更新在 DataAdapter的或的TableAdapter 太）。一旦接受更改，您无法访问原始值，这可​​能是为什么你的code不起作用。

Original values are lost when you call AcceptChanges (which is usually called when you call Update on a DataAdapter or TableAdapter too). Once the changes are accepted, you can't access the original values, that's probably why your code doesn't work.

这篇关于如何从DataRow中获得原始DataColumn的价值呢？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！