SQL防爆preSS连接字符串：相对于应用程序位置的MDF文件位置 [英] SQL Express connection string: mdf file location relative to application location

问题描述

我使用SQL防爆preSS数据库在C＃单元测试项目的一部分。我的数据库位于：

I am using SQL Express databases as part of a unit test project in c#. My databases is located here:

./Databases/MyUnitTestDB.mdf

我想使用相对路径或变量的app.config ，而不是我的连接字符串定义为：

I would like to use a relative path or variable in the app.config rather than having my connection string defined as:

AttachDbFilename=C:\blah\blah\blah\yea\yea\yea\MyApplication\Databases\MyUnitTestDB.mdf 

我已经看到了使用 | DataDirectory目录| ，但我是纠正想这仅适用于Web应用程序

I have seen the use of |DataDirectory| but am I correct in thinking this is only applicable to web applications?

我想控制这个应用程序配置文件中，如在生产中的应用使用托管SQL数据库。

I want to control this in the application configuration file, as in production the application uses a hosted sql database.

推荐答案

谢谢大家，我用你的反应的组合。

Thanks everyone, I used a combination of your responses.

在我的app.config文件我的连接字符串被定义如下：

In my app.config file my connection string is defined as follows

<add name="MyConnectionString"
    connectionString="Server=.\SQLExpress;AttachDbFilename=|DataDirectory|\MyDatabase.mdf;Database=MyDatabaseForTesting;Trusted_Connection=Yes;" />

在我的单元测试类我用设置DataDirectory属性以下

In my unit test class I set the DataDirectory property using the following

[TestInitialize]
public void TestInitialize()
{
    AppDomain.CurrentDomain.SetData("DataDirectory", System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Databases"));

    // rest of initialize implementation ...
}

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