rows.add和importRow之间的区别 [英] Difference between rows.add and importRow

问题描述

在vb.net中向datatable添加行时，rows.add和importRow之间有什么区别？

When adding a row to a datatable in vb.net, what is the difference between rows.add and importRow?

Dim dt As DataTable
Dim dr As DataRow

'Add row this way...
dt.rows.add(dr)

'or this way.
dt.importRow(dr)

推荐答案

做相同的功能添加行到datatable，但主要区别是

both do same functionality adding row to datatable but the main difference is

    DataTable dt1=new DataTable();
    DataRow dr1=dt1.NewRow();
    DataTable dt2=new DataTable();
    dt2.Rows.Add(dr1); // will give you error already dr1 belongs to another datatable in that                              //case you can do like this
    dt2.ImportRow(dr1); // safe
    dt1.Rows.Add(dr1); // safe as dr1 Row belongs to DataTable1 so no exception raise

希望能给你一个想法。 。

hope that will give you an idea..

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