C# 如何在 .Net 2.0 中的 sectionGroup applicationSettings 中按名称获取所有部分

How to get all sections by name in the sectionGroup applicationSettings in .Net 2.0

提问by HaMster

Here's the idea I had:

这是我的想法：

I want a small executable to have an app.config file with multiple sections that are situated under the sectionGroup "applicationSettings" (not "appSettings", I don't need to write to the file). Each section would have a name corresponding to a module that should be loaded if set.

我想要一个小的可执行文件有一个 app.config 文件，其中包含位于 sectionGroup“applicationSettings”（不是“appSettings”，我不需要写入文件）下的多个部分。每个部分都有一个与模块对应的名称，如果设置了该模块应该被加载。

Here's an example:

下面是一个例子：

   <configuration>
     <configSections>
       <sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
         <section name="Executable" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
         <section name="FirstModule" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
       </sectionGroup>
     </configSections>
     <applicationSettings>
       <Executable>
         <setting name="MyFirstSetting" serializeAs="String">
           <value>My awesome feature setting</value>
         </setting>
       </Executable>
       <FirstModule path="path to the modules assembly">
         <setting name="ImportantSettingToTheModule" serializeAs="String">
           <value>Some important string</value>
         </setting>
       </FirstModule>
     </applicationSettings>
   </configuration>

Now if I define the FirstModule section, I want my application to load its assembly. If the section is not defined, the module should not be loaded. This should be true for not only one module but a not yet defined number of them.

现在，如果我定义 FirstModule 部分，我希望我的应用程序加载它的程序集。如果未定义该部分，则不应加载该模块。这不仅适用于一个模块，还适用于尚未定义的数量。

So I basically need to find out about the defined sections at runtime. How would I do that?

所以我基本上需要在运行时找出定义的部分。我该怎么做？

In addition I want this to become a portable executable (= it has to run on Mono as well) that is backwards compatible to .NET 2.0.

此外，我希望它成为向后兼容 .NET 2.0 的可移植可执行文件（= 它也必须在 Mono 上运行）。

It might be interesting to have a look at the project on GitHub (currently at this commit).

在 GitHub 上查看该项目可能会很有趣（目前在此提交中）。

采纳答案by JG in SD

Take a look at the ConfigurationManager.OpenExeConfigurationfunction to load in your configuration file.

查看ConfigurationManager.OpenExeConfiguration要加载到配置文件中的函数。

Then on the System.Configuration.Configurationclass that you'll get back from ConfigurationManager.OpenExeConfigurationyou'll want to look at the SectionGroupsproperty. That'll return a ConfigurationSectionGroupCollectionin which you'll find the applicationSettingssection.

然后在System.Configuration.Configuration你回来的课堂上，你ConfigurationManager.OpenExeConfiguration会想看看这个SectionGroups属性。这将返回一个ConfigurationSectionGroupCollection您将在其中找到该applicationSettings部分的。

In the ConfigurationSectionGroupCollectionthere will be a Sectionsproperty which contains the Executableand FirstModuleConfigurationSectionobjects.

在 中将ConfigurationSectionGroupCollection有一个Sections包含Executable和FirstModuleConfigurationSection对象的属性。

var config = ConfigurationManager.OpenExeConfiguration(pathToExecutable);
var applicationSettingSectionGroup = config.SectionGroups["applicationSettings"];
var executableSection = applicationSettingSectionGroup.Sections["Executable"];
var firstModuleSection = applicationSettingSectionGroup.Sections["FirstModule"];

You will want to check for nullafter getting the ConfigurationSectionGroupCollectionobject or ConfigurationSectionobjects. If they are null they don't exist in the configuraiton file.

您将需要null在获取一个ConfigurationSectionGroupCollection或多个ConfigurationSection对象后进行检查。如果它们为空，则它们不存在于配置文件中。

You can also get the sections by using ConfigurationManager.GetSection

您还可以使用 ConfigurationManager.GetSection

var executableSection = (ClientSettingsSection)ConfigurationManager
    .GetSection("applicationSettings/Executable");
var firstModuleSection = (ClientSettingsSection)ConfigurationManager
    .GetSection("applicationSettings/FirstModule");

Again, if the objects are nullthey don't exist in the configuration file.

同样，如果这些对象null在配置文件中不存在。

To get a list of all the section names and groups you could do:

要获取您可以执行的所有部分名称和组的列表：

var config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

// use the line below instead if you want to load an app.config for a
//   different application other than the one the code is running in
// var config = ConfigurationManager.OpenExeConfiguration(pathToExecutable);

var names = new List<string>();
foreach (ConfigurationSectionGroup csg in config.SectionGroups)
    names.AddRange(GetNames(csg));

foreach (ConfigurationSection cs in config.Sections)
    names.Add(cs.SectionInformation.SectionName);

private static List<string> GetNames(ConfigurationSectionGroup configSectionGroup)
{
    var names = new List<string>();

    foreach (ConfigurationSectionGroup csg in configSectionGroup.SectionGroups)
        names.AddRange(GetNames(csg));

    foreach(ConfigurationSection cs in configSectionGroup.Sections)
        names.Add(configSectionGroup.SectionGroupName + "/" + cs.SectionInformation.SectionName);

    return names;
}