Linq 2 SQL - 经验之准备和工具 (一)

先准备一下数据库，以后所有的demo都建立在该数据库上

-- Run this script at any time, either to:--   (a) Create the demo tables in a different database (see note in previous example)--   (b) Restore the demo tables to their original stateif exists (select * from sysobjects where name = 'PurchaseItem') drop table PurchaseItemif exists (select * from sysobjects where name = 'Purchase') drop table Purchaseif exists (select * from sysobjects where name = 'Customer') drop table Customerif exists (select * from sysobjects where name = 'MedicalArticles') drop table MedicalArticlesif exists (select * from sysobjects where name = 'Product') drop table Productgocreate table Customer(ID int not null primary key,Name nvarchar(30) not null,[Timestamp] timestamp)create table Purchase(ID int not null primary key,CustomerID int null references Customer (ID),Date datetime not null,Description varchar(30) not null,Price decimal not null)create table PurchaseItem(ID int not null primary key,PurchaseID int not null references Purchase (ID),Detail varchar(30) not null,Price decimal not null)create table MedicalArticles(ID int not null primary key,Topic varchar (20),Abstract nvarchar (2000))create table Product(ID int not null primary key,Description varchar(30) not null,  Discontinued bit not null,  LastSale datetime not null)goinsert Customer (ID, Name) values (1, 'Tom')insert Customer (ID, Name) values (2, 'Dick')insert Customer (ID, Name) values (3, 'Harry')insert Customer (ID, Name) values (4, 'Mary')insert Customer (ID, Name) values (5, 'Jay')insert Purchase values (1, 1, '2006-1-1', 'Bike', 500)insert Purchase values (2, 1, '2006-1-2', 'Holiday', 2000)insert Purchase values (3, 2, '2007-1-3', 'Bike', 600)insert Purchase values (4, 2, '2007-1-4', 'Phone', 300)insert Purchase values (5, 3, '2007-1-5', 'Hat', 50)insert Purchase values (6, 4, '2008-1-6', 'Car', 15000)insert Purchase values (7, 4, '2008-1-7', 'Boat', 30000)insert Purchase values (8, 4, '2008-1-8', 'Camera', 1200)insert Purchase values (9, null, '2008-1-9', 'Jacket', 80)insert PurchaseItem values (1, 2, 'Flight', 1500)insert PurchaseItem values (2, 2, 'Accommodation', 500)insert PurchaseItem values (3, 2, 'Camera', 400)insert MedicalArticles values (1, 'Influenza', '<this is the abstract...>')insert MedicalArticles values (2, 'Diabetes', '<this is the abstract...>')insert Product values (1, 'Widget', 0, '2007-1-1')print 'Done!'

再介绍一下一些适合LINQ 2 SQL开发的工具。

• LINQ to SQL Debug Visualizer， 这个工具可以继承到VS.NET中。下载地址搜索一下就有。下载文件包括一个可视化调试工具的.dll程序集（在bin\debug文件夹下），而且还包含了源代码！

安装步骤
1.关闭所有正在运行的Visual Studio 2008。
2.复制SqlServerQueryVisualizer.dll程序集到本地的\Program Files\Microsoft Visual Studio 9.0\Common7\Packages\Debugger\Visualizers目录下：

接下来调试的时候，就能用了。

• LINQPad， 刚才上面的数据库也是LINQPAD中的数据库案例。LinqPad官网

下篇我将介绍具体介绍在项目中使用LINQ2SQL的经验与心得