从数据表中选择特定的列并将其复制到另一个数据表

Question

I have a DataTable Dt1 and another DataTable Dt2.

Dt1 contains many columns and rows and Dt2 is basically empty

I know I should use Dt1.Select to select the specific DataTaRow [] but how can I copy them to Dt2

DataRow [] row = Dt1.Select("ID,MIN_VALUE,MAX_VALUE");

how can i copy them to Dt2?

Answer 1

For .Net Framework 3.5+

You can use CopyToDataTable method.

Returns a DataTable that contains copies of the DataRow objects, given an input IEnumerable object.

DataTable dt1 = new DataTable();
DataRow[] dr = dt.Select("Your string");
DataTable dt2 = dr.CopyToDataTable();