using System;

using System.Xml;

using System.Xml.Serialization;

using System.IO;

using System.Linq;

using System.Collections;

using System.Collections.Generic;

using System.Xml.Linq;

using System.Data;

using System.Collections.Specialized;

using System.Text.RegularExpressions;

using System.Globalization;

using System.Data.DataSetExtensions;

​

public class Program

{

    public static void Main()

    {

        DataTable dt = new DataTable(); 

        dt.Columns.Add("id", typeof(int));

        dt.Columns.Add("name", typeof(string));

        dt.Rows.Add(new object[] {1, "A"});

        dt.Rows.Add(new object[] {2, "b"});

        dt.Rows.Add(new object[] {3, "s"});

        dt.Rows.Add(new object[] {4, "c"});

        dt.Rows.Add(new object[] {5, "d"});

        dt.Rows.Add(new object[] {6, "f"});

        var newdt = dt.AsEnumerable().OrderRandomly().CopyToDataTable();

        foreach(DataRow row in newdt.Rows)

        {

            Console.WriteLine(string.Join(",", row.ItemArray));

        }

    }

}

​

public static class Extension

{

    private static Random random = new Random();

    public static IEnumerable<T> OrderRandomly<T>(this IEnumerable<T> items)        

    {               

        List<T> randomly = new List<T>(items);

        while (randomly.Count > 0)          

        {

            Int32 index = random.Next(randomly.Count);          

            yield return randomly[index];

            randomly.RemoveAt(index);           

        }       

    }   

}

​