LINQ to SQL:数据上下文

[Database(Name="Blog")] 
public class BlogDataContext : DataContext 
{ 
public BlogDataContext() 
: base(@"Server=Esint-lhj\Sql2005;User Id=sa;Password=sql2005;Database=Blog") 
{ 

} 

public Table<Post> Posts 
{ 
get 
{ 
return this.GetTable<Post>(); 
} 
} 
} 
[Table(Name = "Posts")] 
public class Post 
{ 
[Column(IsPrimaryKey = true, IsDbGenerated = true)] 
public int Id { get; set; } 

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

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

[Column] 
public DateTime PubDate { get; set; } 

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

CREATE DATABASE [Blog] 

CREATE DATABASE [Blog] 

.Net SqlClient Data Provider: 已将数据库上下文更改为 'Blog'。. 
SET ARITHABORT ON 
CREATE TABLE [Posts]( 
[Id] Int NOT NULL IDENTITY, 
[Title] NVarChar(4000), 
[Author] NVarChar(4000), 
[PubDate] DateTime NOT NULL, 
[Description] NVarChar(4000), 
CONSTRAINT [PK_Posts] PRIMARY KEY ([Id]) 
)