using System;

using System.Collections.Generic;

using Newtonsoft.Json;

using System;

using System.Linq;

using System.Xml;                   

using System.Xml.Linq;

using System.Collections; 

using System.Collections.Generic;

using System.Data;

using System.Data.DataSetExtensions;

using System.Data.Linq;

using System.Text;

using System.Text.RegularExpressions;

using System.Xml.Serialization; 

using System.IO;

using System.Globalization;

using System.Diagnostics;

using System.Collections.Concurrent;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main(string[] args)

    {

       DataTable dt = new DataTable();

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

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

        dt.Columns.Add("DATA", typeof(double));

        dt.Rows.Add(new object[] {1,34, 2.0d});

        dt.Rows.Add(new object[] {2,676, 5.0d});

        dt.Rows.Add(new object[] {3,7667, 4.0d});

        dt.Rows.Add(new object[] {4,34, 2.0d});

        var result = dt.AsEnumerable()

            .ToDictionary(x=>x.Field<int>("ID"), 

                          x=> new MCEAV() 

                          {

                              ID = x.Field<int>("ID"),

                              BOOK_ID = x.Field<int>("BOOK_ID"), 

                              DATA = x.Field<double>("DATA") 

​

                          });

        result.Dump();

​

    }

}

​

​

​

public class MCEAV

        {

            public int ID { get; set; }

            public int BOOK_ID { get; set; }

            public double DATA { get; set; }

            public override string ToString()

            {

                return ID.ToString() + ", " + BOOK_ID.ToString() + ", " + DATA.ToString();

            }

        }