如何将路由命令的文本用作按钮内容

视图中的XAML代码摘录:

<Button Content="Login" Command="{Binding Login}" />

在视图的代码隐藏中,我将命令绑定从ViewModel添加到视图的绑定集合:

this.CommandBindings.Add( viewModel.LoginCommandBinding );

ViewModel本身执行以下命令:

public class LoginViewModel:ViewModelBase
{

    public ICommand Login { get; private set; }
    public CommandBinding LoginCommandBinding { get; private set; }

    public LoginViewModel( ) {
        this.Login = 
            new RoutedUICommand( "Login", "Login", typeof( Window ) );
        this.LoginCommandBinding = 
            new CommandBinding( Login, LoginCommandHandler, CanExecuteHandler );
    }

    void LoginCommandHandler( object sender, ExecutedRoutedEventArgs e ) {
        //Put code here
    }

    void CanExecuteHandler( object sender, CanExecuteRoutedEventArgs e ) {
        return true;
    }
}