appsetting节点c#中的子appsettings [英] sub appsettings in the appsetting node c#

问题描述

我正在使用通过控制台应用程序创建的 app.config 文件，我可以使用 ConfigurationSettings.AppSettings["key1"].ToString() 读取 key1 的 val1><预><代码><配置><启动><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></启动><应用设置><add key="key1" value="val1"/><add key="key2" value="val2"/></appSettings></配置>

但是我有太多的键和值，我想让它们分类.

我发现一些难以在我的应用程序中使用的东西，因为我想以与上述类似的方式访问密钥

显示所有节点，没有获取所有节点就无法读取节点

例如我想做什么:

<第一节><add key="key1" value="val1"/></Section1><第2节><add key="key1" value="val1"/><第2节></appSettings>

如果有办法使用它访问它ConfigurationSettings.AppSettings["Section1"].["key1"].ToString()

解决方案

您可以在 app.config 中添加自定义部分，而无需编写额外的代码.您所要做的就是在 configSections 节点中声明"新部分

<section name="genericAppSettings" type="System.Configuration.AppSettingsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/></configSections>

然后你可以定义这个部分，用键和值填充它:

 <add key="testkey" value="generic"/><add key="another" value="testvalue"/></genericAppSettings>

要从此部分获取键的值，您必须添加 System.Configuration dll 作为对您项目的引用，添加 using 并使用 GetSection方法.示例:

using System.Collections.Specialized;使用 System.Configuration;命名空间 ConsoleApplication1{课程计划{static void Main(string[] args){NameValueCollection test = (NameValueCollection)ConfigurationManager.GetSection("genericAppSettings");string a = test["another"];}}}

如果需要，您可以轻松地将部分分组:

<section name="genericAppSettings" type="System.Configuration.AppSettingsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>//其他部分</sectionGroup></configSections><通用应用设置><add key="testkey" value="generic"/><add key="another" value="testvalue"/></genericAppSettings>//其他部分</customAppSettingsGroup>

如果您使用组，要访问部分，您必须使用 {group name}/{section name} 格式访问它们:

NameValueCollection test = (NameValueCollection)ConfigurationManager.GetSection("customAppSettingsGroup/genericAppSettings");

I am using the app.config file that is created with a console application and I can read the val1 of the key1 using the ConfigurationSettings.AppSettings["key1"].ToString()

<configuration>  
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0" />
    </startup>  
    <appSettings>
        <add key="key1" value="val1" />
        <add key="key2" value="val2" />  
    </appSettings> 
</configuration>

but I have too many keys and values that I want to make them categorized.

I found something that is difficult to use in my application since I want to access the keys in a similar way to the above one

Showing all nodes and can't read a node without getting all the nodes

for example what I want to do:

<appSettings>
    <Section1>
        <add key="key1" value="val1" />
    </Section1>
    <Section2>
        <add key="key1" value="val1" />
    <Section2>
</appSettings>

and if there is a way to access it using ConfigurationSettings.AppSettings["Section1"].["key1"].ToString()

解决方案

You can add custom sections in app.config without writing additional code. All you have to do is "declaring" new section in configSections node like that

<configSections>
      <section name="genericAppSettings" type="System.Configuration.AppSettingsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
  </configSections>

and then you can define this section filling it with keys and values:

  <genericAppSettings>
      <add key="testkey" value="generic" />
      <add key="another" value="testvalue" />
  </genericAppSettings>

To get value of a key from this section you have to add System.Configuration dll as reference to your project, add using and use GetSection method. Example:

using System.Collections.Specialized;
using System.Configuration;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            NameValueCollection test = (NameValueCollection)ConfigurationManager.GetSection("genericAppSettings");

            string a = test["another"];
        }
    }
}

Nice thing is that you can easily make groups of sections if you need this:

<configSections>
    <sectionGroup name="customAppSettingsGroup">
      <section name="genericAppSettings" type="System.Configuration.AppSettingsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
 // another sections
    </sectionGroup>
</configSections>

  <customAppSettingsGroup>
    <genericAppSettings>
      <add key="testkey" value="generic" />
      <add key="another" value="testvalue" />
    </genericAppSettings>
    // another sections
  </customAppSettingsGroup>

If you use groups, to access sections you have to access them using {group name}/{section name} format:

NameValueCollection test = (NameValueCollection)ConfigurationManager.GetSection("customAppSettingsGroup/genericAppSettings");

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