ExecutedRoutedEventArgs.Parameter 屬性

定義

命名空間:

System.Windows.Input

組件:

PresentationCore.dll

取得指令的資料參數。

public:
 property System::Object ^ Parameter { System::Object ^ get(); };

public object Parameter { get; }

member this.Parameter : obj

Public ReadOnly Property Parameter As Object

屬性值

Object

指令專用的資料。 預設值為 null。

範例

以下範例為自訂 RoutedCommand。ExecutedRoutedEventHandler 處理器會更新 a TextBox 的當前時間，以及ValueSlider透過 ExecutedRoutedEventArgs.Parameter.

//  Executed Event Handler
//
//  Updates the output TextBox with the current seconds 
//  and the target second, which is passed through Args.Parameter.
private void CustomCommandExecuted(object sender, ExecutedRoutedEventArgs e)
{
    txtResults.Text = "Command Executed at " +
        DateTime.Now.Second + " seconds after the minute \n\n" +
        "The target second is set to " +
        e.Parameter;
}

'  Executed Event Handler
'
'  Updates the output TextBox with the current seconds 
'  and the target second, which is passed through Args.Parameter.
Private Sub CustomCommandExecuted(ByVal sender As Object, ByVal e As ExecutedRoutedEventArgs)
    txtResults.Text = "Command Executed at " & Date.Now.Second & " seconds after the minute " & vbLf & vbLf & "The target second is set to " & e.Parameter.ToString()
End Sub

備註

此屬性代表由特定指令定義的通用資料參數。

若不需要此參數， null 則可傳遞。

通常，當指令執行時，會用來 Parameter 傳遞特定資訊給指令。 資料的類型由指令定義。

另請參閱

• ExecutedRoutedEventHandler
• CommandBinding