我可以在 .NET 配置部分添加文本节点而不是属性吗？

发布于 2024-10-18 17:01:37 字数 505 浏览 3 评论 0原文

我目前有一个 .NET 自定义配置部分，如下所示：

<customSection name="My section" />

文本节点（我不确定这是否是正确的术语？），如下所示：

<customSection>
  <name>My Section</name>
</customSection>

我当前的 customSection 类如下所示：

public class CustomSection: ConfigurationSection {

  [ConfigurationProperty("name")]
  public String Name {
    get {
      return (String)this["name"];
    }
  }

}

我想要的是将其编写为我要把它变成一个文本节点吗？

原文

I currently have a .NET custom configurationsection that looks like this:

<customSection name="My section" />

What I want is to write it as a textnode (I'm not sure if this is the correct term?) like this:

<customSection>
  <name>My Section</name>
</customSection>

My current customSection class looks like this:

public class CustomSection: ConfigurationSection {

  [ConfigurationProperty("name")]
  public String Name {
    get {
      return (String)this["name"];
    }
  }

}

What should I do to make it a textnode?

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吾性傲以野 2024-10-25 17:01:37

一些研究表明，现有的配置类不支持该类型的元素，除非创建自定义类来处理它。这篇 CodeProject 文章介绍了如何创建一个新的 ConfigurationTextElement 类是通用的，可以将序列化的字符串解析为对象（包括字符串，这就是文章显示的内容）。

类代码很简短：

using System.Collections.Generic;
using System.Configuration;
using System.Xml;

public class ConfigurationTextElement<T> : ConfigurationElement
{
    private T _value;
    protected override void DeserializeElement(XmlReader reader, 
                            bool serializeCollectionKey)
    {
        _value = (T)reader.ReadElementContentAs(typeof(T), null);
    }

    public T Value
    {
        get { return _value; }
    }
}

A bit of research suggests that the existing configuration classes do not support that type of element without creating a custom class to handle it. This CodeProject article covers creating a new ConfigurationTextElement class that is generic and can parse a serialized string into an object (including a string, which is what the article shows).

The class code is brief:

using System.Collections.Generic;
using System.Configuration;
using System.Xml;

public class ConfigurationTextElement<T> : ConfigurationElement
{
    private T _value;
    protected override void DeserializeElement(XmlReader reader, 
                            bool serializeCollectionKey)
    {
        _value = (T)reader.ReadElementContentAs(typeof(T), null);
    }

    public T Value
    {
        get { return _value; }
    }
}

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月依秋水 2024-10-25 17:01:37

如果您希望能够同时拥有属性和文本内容，例如

<customsection>
      <name key="val">My Section</name>
</customSection>

，那么您可以像这样覆盖 DeserializeElement ：

protected override void DeserializeElement(XmlReader reader, bool serializeCollectionKey)
{
    int count = reader.AttributeCount;
    //First get the attributes
    string attrName;
    for (int i = 0; i < count; i++)
    {
        reader.MoveToAttribute(i);
        attrName = reader.Name;
        this[attrName] = reader.Value;
    }
    //then get the text content
    reader.MoveToElement();
    text = reader.ReadElementContentAsString();
}

希望这会有所帮助。

If you want to be able to have both attributes as well as text content e.g.

<customsection>
      <name key="val">My Section</name>
</customSection>

Then you can override DeserializeElement like so:

protected override void DeserializeElement(XmlReader reader, bool serializeCollectionKey)
{
    int count = reader.AttributeCount;
    //First get the attributes
    string attrName;
    for (int i = 0; i < count; i++)
    {
        reader.MoveToAttribute(i);
        attrName = reader.Name;
        this[attrName] = reader.Value;
    }
    //then get the text content
    reader.MoveToElement();
    text = reader.ReadElementContentAsString();
}

Hope this helps.

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