自动将LinqToSql基类添加到实体的方法？

using System;
using System.Data.Linq;
using System.Data.Linq.Mapping;

[Table(Name = "Products")]
public class Product : LinqToSqlBaseClass
{
    private int _productID;
    [Column(IsPrimaryKey = true, Storage = "_productID")]
    public int ProductID
    {
        get { return this._productID; }
        set { this._productID = value; }
    }

    private string _productName;
    [Column(Storage = "_productName")]
    public string ProductName
    {
        get { return this._productName; }
        set { this._productName = value; }
    }

    // Other properties and methods go here
}