LINQ查询将数据插入数据库

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

[Table(Name="Products")]
public class Product
{
    [Column(IsPrimaryKey=true, IsDbGenerated=true)]
    public int ProductID { get; set; }

    [Column]
    public string ProductName { get; set; }

    [Column]
    public int CategoryID { get; set; }

    [Column]
    public decimal UnitPrice { get; set; }
}

class Program
{
    static void Main(string[] args)
    {
        DataContext db = new DataContext("ConnectionString");

        Product newProduct = new Product();
        newProduct.ProductName = "New Product";
        newProduct.CategoryID = 1;
        newProduct.UnitPrice = 100.0m;

        db.Products.InsertOnSubmit(newProduct);
        db.SubmitChanges();
    }
}