To Get DataColumn Name in DataTable in c#.net

To get DataColumnName in dataTable By the following code:

In C#.net

using System.Data;

//objDataTable is a DataTable object which is having Data

objDataTable.Columns[columnIndex].ColumnName="New ColumnName";


(OR)


objDataTable.Columns["OldColumnName"].ColumnName="New ColumnName";