get column names to array

Question

如何获取列名到System.Data.DataTable中的数组？

Answer 1

Here's how:

var columnNames = myDataTable.Columns.
         Cast<DataColumn>().
         Select(c => c.ColumnName).
         ToArray();

Answer 2

It can be done like this

using System.Linq;

// ... //

var columnsArray = dtObj.Columns.Cast<DataColumn>().Select(c => c.ColumnName).ToArray();