ConfigurationSectionCollection.Keys 属性

定义

命名空间:

System.Configuration

程序集:

System.Configuration.ConfigurationManager.dll

获取此 ConfigurationSectionCollection 对象中包含的所有 ConfigurationSection 对象的键。

public:
 virtual property System::Collections::Specialized::NameObjectCollectionBase::KeysCollection ^ Keys { System::Collections::Specialized::NameObjectCollectionBase::KeysCollection ^ get(); };

public override System.Collections.Specialized.NameObjectCollectionBase.KeysCollection Keys { get; }

member this.Keys : System.Collections.Specialized.NameObjectCollectionBase.KeysCollection

Public Overrides ReadOnly Property Keys As NameObjectCollectionBase.KeysCollection

属性值

NameObjectCollectionBase.KeysCollection

一个 NameObjectCollectionBase.KeysCollection 对象，包含此集合中所有节的键。

示例

下面的示例演示如何使用 Keys 属性。

static void GetKeys()
{

    try
    {
        System.Configuration.Configuration config =
        ConfigurationManager.OpenExeConfiguration(
        ConfigurationUserLevel.None);

        ConfigurationSectionCollection sections =
            config.Sections;

        foreach (string key in sections.Keys)
        {

            Console.WriteLine(
             "Key value: {0}", key);
        }
    }
    catch (ConfigurationErrorsException err)
    {
        Console.WriteLine(err.ToString());
    }
}

Shared Sub GetKeys()

    Try
        Dim config _
        As System.Configuration.Configuration = _
        ConfigurationManager.OpenExeConfiguration( _
        ConfigurationUserLevel.None)

        Dim sections _
        As ConfigurationSectionCollection = _
        config.Sections


        Dim key As String
        For Each key In sections.Keys


            Console.WriteLine("Key value: {0}", key)
        Next key


    Catch err As ConfigurationErrorsException
        Console.WriteLine(err.ToString())
    End Try
End Sub

另请参阅

• Configuration
• ConfigurationSectionGroup
• ConfigurationSection