c# ConfigurationSection

怎么把自己的配置文件配置到app.config中？

• 方案1：在app.config中添加

 <!--应用配置-->
  <appSettings configSource="ConfAppSettings.config" />

如果我需要自己定义单独的多个配置文件，又该怎么处理才可以把配置文件添加app.config中呢？

• 方案2：定义ConfigurationSection类

MyConfigurationSection  

public class MyConfigurationSection : ConfigurationSection
{
    [ConfigurationProperty("", IsDefaultCollection = true)]
    public KeyValueConfigurationElementCollection My
    {
        get { return (KeyValueConfigurationElementCollection)base[""]; }
    }

    public string GetValueByKey(string key)
    {
        foreach (KeyValueConfigurationElement item in this.My)
        {
            if (item.Key == key)
                return item.Value;
        }

        return string.Empty;
    }

    //[ConfigurationProperty("configSource", IsRequired = false)]
    //public string ConfigSource
    //{
    //    get { return (string)base["configSource"]; }
    //    set
    //    {
    //        base["configSource"] = value;
    //    }
    //}
}

KeyValueConfigurationElementCollection

public class KeyValueConfigurationElementCollection : ConfigurationElementCollection
{
    protected override ConfigurationElement CreateNewElement()
    {
        return new KeyValueConfigurationElement();
    }

    protected override object GetElementKey(ConfigurationElement element)
    {
        return (element as KeyValueConfigurationElement).Key;
    }

    public override ConfigurationElementCollectionType CollectionType
    {
        get { return ConfigurationElementCollectionType.BasicMap; }
    }

    protected override string ElementName
    {
        get { return "add"; }
    }
}

KeyValueConfigurationElement

public class KeyValueConfigurationElement : ConfigurationElement
{
    [ConfigurationProperty("key", IsRequired = true)]
    public string Key
    {
        get { return (string)base["key"]; }
        set { base["key"] = value; }
    }

    [ConfigurationProperty("value", IsRequired = true)]
    public string Value
    {
        get { return (string)base["value"]; }
        set { base["value"] = value; }
    }
}

修改app.config配置文件：

<configSections>
    <section name="my" type="DTCore.MyConfigurationSection,DTCore"/>
</configSections>

<mre configSource="ConfMy_Settings.config" />

ConfMy_Settings.config

<?xml version="1.0" encoding="utf-8"?>
<my>
  <add key="DT.AKey" value="c key"/>
  <add key="DT.CKey.RIPPRB" value="the value"/>
</my>

怎么调用：

MyConfigurationSection mySection=(MyConfigurationSection)ConfigurationManager.GetSection("my");
string value=mySection.GetValueByKey("DT.AKey");