ConnectionStringSettingsCollection.Item[] 属性

定义

命名空间:

System.Configuration

程序集:

System.Configuration.ConfigurationManager.dll

包:

System.Configuration.ConfigurationManager v8.0.0

获取或设置集合中的 ConnectionStringSettings 对象。

重载

Item[Int32]	获取或设置位于集合中指定索引处的连接字符串。
Item[String]	获取或设置集合中具有指定名称的 ConnectionStringSettings 对象。

Item[Int32]

Source:

ConnectionStringSettingsCollection.cs

获取或设置位于集合中指定索引处的连接字符串。

public:
 property System::Configuration::ConnectionStringSettings ^ default[int] { System::Configuration::ConnectionStringSettings ^ get(int index); void set(int index, System::Configuration::ConnectionStringSettings ^ value); };

public System.Configuration.ConnectionStringSettings this[int index] { get; set; }

member this.Item(int) : System.Configuration.ConnectionStringSettings with get, set

Default Public Property Item(index As Integer) As ConnectionStringSettings

参数

index

Int32

集合中 ConnectionStringSettings 对象的索引。

属性值

ConnectionStringSettings

指定索引处的 ConnectionStringSettings 对象。

示例

以下示例演示如何访问 ConnectionStringSettings 集合中给定索引处 ConnectionStringSettingsCollection 的 对象。

static void GetItems()
{

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

        // Clear the connection strings collection.
        ConnectionStringsSection csSection =
            config.ConnectionStrings;
        ConnectionStringSettingsCollection csCollection =
         csSection.ConnectionStrings;

        // Get the connection string setting element
        // with the specified index.
        ConnectionStringSettings cs =
            csCollection[0];

        Console.WriteLine(
             "cs: {0}", cs.Name);
    }
    catch (ConfigurationErrorsException err)
    {
        Console.WriteLine(err.ToString());
    }
}

Shared Sub GetItems() 
    
    Try
        ' Get the application configuration file.
        Dim config _
        As System.Configuration.Configuration = _
        ConfigurationManager.OpenExeConfiguration( _
        ConfigurationUserLevel.None)

        ' Clear the connection strings collection.
        Dim csSection _
        As ConnectionStringsSection = _
        config.ConnectionStrings
        Dim csCollection _
        As ConnectionStringSettingsCollection = _
        csSection.ConnectionStrings
        
        ' Get the connection string setting element
        ' with the specified index.
        Dim cs _
        As ConnectionStringSettings = _
        csCollection(0)
        
        Console.WriteLine("cs: {0}", cs.Name)
    
    Catch err As ConfigurationErrorsException
        Console.WriteLine(err.ToString())
    End Try

End Sub

注解

在 C# 中，此属性是 ConnectionStringSettingsCollection 类的索引器。

另请参阅

• ConnectionStringsSection

Item[String]

Source:

ConnectionStringSettingsCollection.cs

获取或设置集合中具有指定名称的 ConnectionStringSettings 对象。

public:
 property System::Configuration::ConnectionStringSettings ^ default[System::String ^] { System::Configuration::ConnectionStringSettings ^ get(System::String ^ name); };

public System.Configuration.ConnectionStringSettings this[string name] { get; }

member this.Item(string) : System.Configuration.ConnectionStringSettings

Default Public ReadOnly Property Item(name As String) As ConnectionStringSettings

参数

name

String

集合中 ConnectionStringSettings 对象的名称。

属性值

ConnectionStringSettings

具有指定名称的 ConnectionStringSettings 对象；否则为 null。

示例

以下示例演示如何访问集合中的ConnectionStringSettingsCollection命名ConnectionStringSettings对象。

static void GetItems2()
{

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

        // Clear the connection strings collection.
        ConnectionStringsSection csSection =
            config.ConnectionStrings;
        ConnectionStringSettingsCollection csCollection =
         csSection.ConnectionStrings;

        // Get the connection string setting element
        // with the specified name.
        ConnectionStringSettings cs =
            csCollection["ConnStr0"];
       
        Console.WriteLine(
            "cs: {0}", cs.Name);
    }
    catch (ConfigurationErrorsException err)
    {
        Console.WriteLine(err.ToString());
    }
}

Shared Sub GetItems2() 
    
    Try
        ' Get the application configuration file.
        Dim config _
        As System.Configuration.Configuration = _
        ConfigurationManager.OpenExeConfiguration( _
        ConfigurationUserLevel.None)

        ' Clear the connection strings collection.
        Dim csSection _
        As ConnectionStringsSection = _
        config.ConnectionStrings
        Dim csCollection _
        As ConnectionStringSettingsCollection = _
        csSection.ConnectionStrings
        
        ' Get the connection string setting element
        ' with the specified name.
        Dim cs _
        As ConnectionStringSettings = _
        csCollection("ConnStr0")
        
        Console.WriteLine("cs: {0}", cs.Name)
    
    Catch err As ConfigurationErrorsException
        Console.WriteLine(err.ToString())
    End Try

End Sub

注解

在 C# 中，此属性是 ConnectionStringSettingsCollection 类的索引器。

另请参阅

• ConnectionStringsSection