AppSettings与applicationSettings（.NET app.config / Web.config）的优缺点

问题描述

在开发.NET Windows Forms应用程序时，我们可以在这些 App.config 标记之间进行选择，以存储我们的配置值。哪个更好？

When developing a .NET Windows Forms Application we have the choice between those App.config tags to store our configuration values. Which one is better?

<configuration>

  <!-- Choice 1 -->
  <appSettings>
    <add key="RequestTimeoutInMilliseconds" value="10000"/>
  </appSettings>

  <!-- Choice 2 -->
  <configSections>
    <sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c5612342342" >
        <section name="Project1.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c5612342342" requirePermission="false" />
    </sectionGroup>
  </configSections>
  <applicationSettings>
    <Project1.Properties.Settings>
      <setting name="TABLEA" serializeAs="String">
        <value>TABLEA</value>
      </setting>
    </Project1.Properties.Settings>
  </applicationSettings>

</configuration>

推荐答案

基本< appSettings> ; 更容易处理-只需将< add key = .... value = ... />

The basic <appSettings> is easier to deal with - just slap in a <add key="...." value="..." /> entry and you're done.

缺点是：没有类型检查，例如您不能安全地假设您要配置的号码确实存在一个号码-有人可以在该设置中输入一个字符串.....您只需以 ConfigurationManager [（key）] ，然后由您决定要处理的内容。

The downside is: there's no type-checking, e.g. you cannot safely assume your number that you wanted to configure there really is a number - someone could put a string into that setting..... you just access it as ConfigurationManager["(key)"] and then it's up to you to know what you're dealing with.

此外，随着时间的流逝，< appSettings> 可能会变得相当复杂和混乱，如果您的应用程序开始将内容放入其中（还记得旧的windows.ini文件吗？：-））。

Also, over time, the <appSettings> can get rather convoluted and messy, if lots of parts of your app start putting stuff in there (remember the old windows.ini file? :-)).

如果可以的话，我希望并建议使用您自己的配置部分-使用.NET 2.0，它真的变得非常容易，这样，您就可以：

If you can, I would prefer and recommend using your own configuration sections - with .NET 2.0, it's really become quite easy, That way, you can:

• a）在代码中定义配置设置并具有它们是类型安全的
  并选中


• b）您可以将 Your 设置与其他
  的设置区分开。而且您也可以重用您的配置代码！

• a) Define your configuration settings in code and have them type-safeand checked
• b) You can cleanly separate YOUR settings from everyoneelse's. And you can reuse your config code, too!

您可以通过一系列非常好的文章来揭开.NET 2.0配置系统的神秘面纱。在CodeProject上：

There's a series of really good articles on you to demystify the .NET 2.0 configuration system on CodeProject:

强烈推荐！ Jon Rista出色地解释了.NET 2.0中的配置系统。

Highly recommended! Jon Rista did a great job explaining the configuration system in .NET 2.0.

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