自定义的app.config配置节处理 [英] Custom app.config Config Section Handler

问题描述

什么是拿起通过一个类继承自System.Configuration.Section如果我用这样的的app.config页面列表中选择正确的方法是什么？

 ＆LT; XML版本=1.0编码=UTF-8＆GT？;
＆lt;结构＆GT;

  ＆LT; configSections＆GT;
    ＆lt;节名称=XrbSettingsTYPE =Xrb.UI.XrbSettings，Xrb.UI/＆GT;
  ＆LT; / configSections＆GT;

  ＆LT; XrbSettings＆GT;
    ＆LT;网页＆GT;
      ＆LT;添加标题=谷歌URL =htt​​p://www.google.com/＆GT;
      ＆LT;添加标题=雅虎URL =htt​​p://www.yahoo.com/＆GT;
    ＆LT; /页＆GT;
  ＆LT; / XrbSettings＆GT;

＆LT; /结构＆gt;
 

解决方案

首先，你在扩展部分类添加属性：

  [的ConfigurationProperty（页，IsDefaultCollection = FALSE）]
[ConfigurationCollection（typeof运算（PageCollection），AddItemName =加）
公共PageCollection页面{
    得到 {
        返程（PageCollection）本[页];
    }
}
 

然后，你需要做一个PageCollection类。所有我见过的例子是pretty的很多相同的，从而只是复制<一href="http://sourceforge.net/p/nmailserver/$c$c/HEAD/tree/NMail/trunk/NMail/Configuration/NamedServiceCollection.cs"相对=nofollow>这个并重新命名NamedService到页面。

最后补充扩展ObjectConfigurationElement类：

 公共类PageElement：ObjectConfigurationElement {
    [的ConfigurationProperty（标题，IsRequired =真）
    公共字符串名称{
        得到 {
            返程（串）本[标题];
        }
        组 {
            这种[标题] =价值;
        }
    }

    [的ConfigurationProperty（URL，IsRequired =真）
    公共字符串URL {
        得到 {
            返程（串）本[网址];
        }
        组 {
            这种[网址] =值;
        }
    }
}
 

下面是一些文件从一个简单的实现：

• <一个href="http://sourceforge.net/p/nmailserver/$c$c/HEAD/tree/NMail/trunk/NMail.Server.Console/NMail.config"相对=nofollow>示例配置
• <一个href="http://sourceforge.net/p/nmailserver/$c$c/HEAD/tree/NMail/trunk/NMail/Configuration/NamedServiceCollection.cs"相对=nofollow>收集和元素类
• <一个href="http://sourceforge.net/p/nmailserver/$c$c/HEAD/tree/NMail/trunk/NMail/Configuration/NMailConfiguration.cs"相对=nofollow>配置部分类

What is the correct way to pick up the list of "pages" via a class that inherits from System.Configuration.Section if I used a app.config like this?

<?xml version="1.0" encoding="utf-8" ?>
<configuration>

  <configSections>
    <section name="XrbSettings" type="Xrb.UI.XrbSettings,Xrb.UI" />
  </configSections>

  <XrbSettings>
    <pages>
      <add title="Google" url="http://www.google.com" />
      <add title="Yahoo" url="http://www.yahoo.com" />
    </pages>
  </XrbSettings>

</configuration>

解决方案

First you add a property in the class that extends Section:

[ConfigurationProperty("pages", IsDefaultCollection = false)]
[ConfigurationCollection(typeof(PageCollection), AddItemName = "add")]
public PageCollection Pages {
    get {
        return (PageCollection) this["pages"];
    }
}

Then you need to make a PageCollection class. All the examples I've seen are pretty much identical so just copy this one and rename "NamedService" to "Page".

Finally add a class that extends ObjectConfigurationElement:

public class PageElement : ObjectConfigurationElement {
    [ConfigurationProperty("title", IsRequired = true)]
    public string Title {
        get {
            return (string) this["title"];
        }
        set {
            this["title"] = value;
        }
    }

    [ConfigurationProperty("url", IsRequired = true)]
    public string Url {
        get {
            return (string) this["url"];
        }
        set {
            this["url"] = value;
        }
    }
}

Here are some files from a sample implementation:

• Sample config
• Collection and element classes
• Config section class

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