如何从app.config将字典加载到控制台应用程序中?

您需要添加 <appSettings> 到app.config文件的部分。它看起来像:

<appSettings>
    <add key="foo" value="fooValue" />
    <add key="bar" value="barValue" />
    <add key="baz" value="bazValue" />
 </appSettings> 

System.Configuration.ConfigurationManager.AppSettings ,这是一个 NameValueCollection ,它实际上是一个从字符串到字符串的字典。

string myFoo = System.Configuration.ConfigurationManager.AppSettings["foo"];

假设您有一个名为“PluginSpec”的类,您可以编写如下代码:

[ConfigurationCollection(typeof(PluginSpec), AddItemName = "Plugin",
    CollectionType = ConfigurationElementCollectionType.BasicMap)]
public class PluginCollection : ConfigurationElementCollection
{
    //This collection is potentially modified at run-time, so
    //this override prevents a "configuration is read only" exception.
    public override bool IsReadOnly()
    {
        return false;
    }

    protected override ConfigurationElement CreateNewElement()
    {
        return new PluginSpec();
    }

    protected override object GetElementKey(ConfigurationElement element)
    {
        PluginSpec retVal = element as PluginSpec;
        return retVal.Name;
    }

    public PluginSpec this[string name]
    {
        get { return base.BaseGet(name) as PluginSpec; }
    }

    public void Add(PluginSpec plugin){
        this.BaseAdd(plugin);
    }
}

上面的代码可以从另一个配置类的成员中使用,如下所示:

    [ConfigurationProperty("", IsDefaultCollection = true)]
    public PluginCollection Plugins
    {
        get
        {
            PluginCollection subList = base[""] as PluginCollection;
            return subList;
        }
    }

以上是从ConfigurationElement或ConfigurationSection派生的类中的成员。