App.config:用户与应用范围 [英] App.config: User vs Application Scope

问题描述

我在我的项目中添加了 App.config 文件.我从项目">属性">设置"面板创建了两个设置 -

我注意到，当我添加设置时，我可以将范围定义为 User 或 Application.-

1. 用户
2. 申请

如果我将设置定义为 User，它会转到 userSettings 部分，
如果我将设置定义为 Application，它会转到 applicationSettings 部分

App.config

<预><代码><配置><用户设置><DemoApp.Properties.Settings><setting name="MySetting1" serializeAs="String"><value>Value1</value></设置></DemoApp.Properties.Settings></userSettings><应用程序设置><DemoApp.Properties.Settings><setting name="MySetting2" serializeAs="String"><value>Value2</value></设置></DemoApp.Properties.Settings></applicationSettings></配置>

但是，可以从 .cs -

以相同的方式访问这些设置

代码

string mySetting1 = DemoApp.Properties.Settings.Default.MySetting1;字符串 mySetting2 = DemoApp.Properties.Settings.Default.MySetting2;

User 和 Application 作用域有什么区别，在什么情况下应该选择这两者?

解决方案

基本上，应用程序设置不能在程序运行期间更改，而用户设置可以.然后应保存这些用户设置，以便用户在接下来运行应用程序时获得熟悉的体验.

例如，您可能使用不同的模块编写应用程序，并且需要确保主模块使用正确版本的安全模块.为此，您将设置一个应用程序范围设置，例如:

SecurityModuleVersion string Application v1.21

稍后重构安全模块时，您可能会在部署时将该值更改为 v1.22，以确保实施正确的安全性

另一方面，如果您的应用程序具有不同的外观"，包括颜色更改、字体更改等，那么您可以设置用户设置，如下所示:

ApplicationSkin string User DefaultSkin

然后，当米歇尔改变她喜欢的皮肤时，应用程序会记住她的设置.属性现在可能如下所示:

ApplicationSkin string 用户 HelloKittySkin

I have added App.config file in my project. I have created two settings from Project > Properties > Settings panel -

I have noticed that when I am adding a setting, I can define scope as User or Application. -

1. User
2. Application

If I define setting as User it goes touserSettings section,
if I define setting as Application it goes to applicationSettings section

App.config

<configuration>

    <userSettings>
        <DemoApp.Properties.Settings>
            <setting name="MySetting1" serializeAs="String">
                <value>Value1</value>
            </setting>
        </DemoApp.Properties.Settings>
    </userSettings>

    <applicationSettings>
        <DemoApp.Properties.Settings>
            <setting name="MySetting2" serializeAs="String">
                <value>Value2</value>
            </setting>
        </DemoApp.Properties.Settings>
    </applicationSettings>

</configuration>

But, these settings can be accessed in the same way from .cs -

Code

string mySetting1 = DemoApp.Properties.Settings.Default.MySetting1;
string mySetting2 = DemoApp.Properties.Settings.Default.MySetting2;

What is the difference between User and Application scope and under what circumstances one should choose between these two?

解决方案

Basically, application settings cannot be changed during the running of a program and user settings can. These user settings should then be saved so the user is presented with a familiar experience when (s)he runs the application next.

Edit: For examples, you might write your application with different modules, and need to ensure that your main module is using the correct version of your security module. For this you would set up an application-scope setting eg:

SecurityModuleVersion  string     Application      v1.21

Sometime later when you refactor the security module, you might change the value to v1.22 when you deploy to ensure the correct security is being implemented

On the other hand, if your application has different 'skins' with color changes, font changes etc, then you may setup a user setting something like the following:

ApplicationSkin        string     User              DefaultSkin

Then, when Michelle changes to the skin she prefers, the application remembers her settings. The properties may now look like:

ApplicationSkin        string     User              HelloKittySkin

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