如何在自定义控件中创建可绑定命令？

public static readonly DependencyProperty CommandProperty =
    DependencyProperty.Register("Command", typeof(ICommand), typeof(CustomControl), new PropertyMetadata(null));

public ICommand Command
{
    get { return (ICommand)GetValue(CommandProperty); }
    set { SetValue(CommandProperty, value); }
}

public static readonly DependencyProperty CommandParameterProperty =
    DependencyProperty.Register("CommandParameter", typeof(object), typeof(CustomControl), new PropertyMetadata(null));

public object CommandParameter
{
    get { return GetValue(CommandParameterProperty); }
    set { SetValue(CommandParameterProperty, value); }
}

public ICommand CustomCommand { get; private set; }

public CustomViewModel()
{
    CustomCommand = new RelayCommand(ExecuteCustomCommand);
}

private void ExecuteCustomCommand(object parameter)
{
    // 在此处执行命令逻辑
}