相对于数据库列名，如果你想为字段或属性设置成不同的名字，可以使用(Name="")标签来实现.否则程序会默认以你的字段或属性名称作为列名,正如我们这里的Book's主键:Id那样。
[Column( IsPrimaryKey = true, IsDbGenerated = true )]
public int Id { get; set; }
public int Id { get; set; }
(3)使用[Column]特性为表添加其他非关系列
后面部分我们将会回到关系对象上来。现在，咱们开始了解表对象的非主键，外键列。Book有两个这样的列：Title 和 Price。其数据类型由数据库的money类型转换到了.NET的decimal类型，以及由varchars类型转换到了.NET的string类型。LINQ会自动为你处理这些数据类型之间的转换。
[Column] public string Title { get; set; }
[Column] public decimal Price { get; set; }
[Column] public decimal Price { get; set; }
Book Catalog应用程序的Author和Category也进行了这样的处理，即这三个类对象都对应于自己的数据表：
using System.Data.Linq.Mapping;
namespace LINQDemo
{
[Table( Name = "Books" )]
public class Book
{
[Column( IsPrimaryKey = true, IsDbGenerated = true )] public int Id { get; set; }
[Column] public string Title { get; set; }
[Column] public decimal Price { get; set; }
}
[Table (Name="Authors")]
public class Author
{
[Column (IsPrimaryKey = true, IsDbGenerated = true )] public int Id { get; set; }
[Column] public string Name { get; set; }
}
[Table (Name="BookCategories")]
public class Category
{
[Column (IsPrimaryKey = true, IsDbGenerated = true )] public int Id { get; set; }
[Column] public string Name { get; set; }
}
}
namespace LINQDemo
{
[Table( Name = "Books" )]
public class Book
{
[Column( IsPrimaryKey = true, IsDbGenerated = true )] public int Id { get; set; }
[Column] public string Title { get; set; }
[Column] public decimal Price { get; set; }
}
[Table (Name="Authors")]
public class Author
{
[Column (IsPrimaryKey = true, IsDbGenerated = true )] public int Id { get; set; }
[Column] public string Name { get; set; }
}
[Table (Name="BookCategories")]
public class Category
{
[Column (IsPrimaryKey = true, IsDbGenerated = true )] public int Id { get; set; }
[Column] public string Name { get; set; }
}
}
