using System;

using System.Linq;

using System.Data;

class Program

{

    static void Main()

    {

        DataTable table = new DataTable();

        table.Columns.Add("Column1", typeof(int));

        table.Columns.Add("Column2", typeof(string));

        object [] rowValues =new object[] { 1,"Test","moreValue"};

        try

        {

            // Attempt to add the array as a row to the DataTable

            table.Rows.Add(rowValues);

        }

        catch (ArgumentException ex)

        {

            // Catch the exception and display the error message

            Console.WriteLine(ex.Message);

        }

    }

}

​