ConnectionStringSettingsCollection.Clear 方法

public:
 void Clear();

public void Clear();

member this.Clear : unit -> unit

Public Sub Clear ()

範例

以下範例展示了如何從集合中移除所有 ConnectionStringSettings 物件 ConnectionStringSettingsCollection 。

// Clear connection strings collection.
static void ClearConnectionStrings()
{

    // Get the configuration file.
    System.Configuration.Configuration config =
        ConfigurationManager.OpenExeConfiguration(
        ConfigurationUserLevel.None);

    // Clear the connection strings collection.
    ConnectionStringsSection csSection =
        config.ConnectionStrings;
    csSection.ConnectionStrings.Clear();

    // Save the configuration file.
    config.Save(ConfigurationSaveMode.Modified);

    Console.WriteLine("Connection strings cleared.");
}

' Clear connection strings collection.
Shared Sub ClearConnectionStrings() 
    
    ' 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
    csSection.ConnectionStrings.Clear()
    
    ' Save the configuration file.
    config.Save(ConfigurationSaveMode.Modified)
    
    Console.WriteLine("Connection strings cleared.")

End Sub

備註

此 Clear 方法會在目前的組態階層層級移除設定檔中的所有連接字串，並在檔案中寫入 <clear> 標籤。 這個 <clear> 標籤表示系統會忽略父組態檔案中定義的所有連接字串。

另請參閱

• ConnectionStringsSection