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ExecutedRoutedEventArgs.Parameter Property

Gets data parameter of the command.

Namespace:  System.Windows.Input
Assembly:  PresentationCore (in PresentationCore.dll)

public Object Parameter { get; }
Members of this class are either not typically used in XAML, or cannot be used in XAML.

Property Value

Type: System.Object
The command-specific data. The default value is null.

This property represents a generic data parameter that is defined by the particular command.

If this parameter is not needed, null can be passed.

Normally, the Parameter is used to pass specific information to the command when it is executed. The type of the data is defined by the command.

The following example creates an ExecutedRoutedEventHandler for a custom RoutedCommand. The handler updates a TextBox with the current time and the Value property of a Slider control that is passed to the handler through the 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 " +

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0