WPF:将我的文本框与我的属性一起传递到我的转换器中

所以我有这个 Converter :

public class ComboboxSelectedIndexToTextBoxBackgroundColor : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        int selectedIndex = (int)value;
        if (selectedIndex == 0)
            return "Red";
        else
            return "Green";
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

我的绑定对象具有此属性(实现 INotifyPropertyChanged ):

public int ComboboxSelectedIndex
{
    get { return _comboboxSelectedIndex; }
    set
    {
        _comboboxSelectedIndex = value;
        OnPropertyChanged();
    }
}

我的 TextBox :

<TextBox Controls:TextBoxHelper.ClearTextButton="False"
         Background="{Binding ComboboxSelectedIndex, Converter={StaticResource ComboboxSelectedIndexToTextBoxBackgroundColor}}"
         Margin="0,0,0,0">

所以如果我想使用 MultiBindingConverter 沿着我的 ComboboxSelectedIndex 我希望slao将我的 文本框 -有可能吗? 我该怎么做?