我需要在转换器类中定义 DependencyProperty,因为我需要此数据来进行转换,并且此数据位于另一个对象中,而不是我绑定到的对象中。
我的转换器类如下:
public class LEGOMaterialConverter : DependencyObject, IValueConverter
{
public DependencyProperty MaterialsListProperty = DependencyProperty.Register("MaterialsList", typeof(Dictionary<int, LEGOMaterial>), typeof(LEGOMaterialConverter));
public Dictionary<int, LEGOMaterial> MaterialsList
{
get
{
return (Dictionary<int, LEGOMaterial>)GetValue(MaterialsListProperty);
}
set
{
SetValue(MaterialsListProperty, value);
}
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
LEGOMaterial material = null;
MaterialsList.TryGetValue((int)value, out material);
return material;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
然后我在 Window.REsources 区域实例化它:
<Window.Resources>
<local:LEGOMaterialConverter x:Key="MaterialsConverter" MaterialsList="{Binding Path=Materials}" />
</Window.Resources>
我收到以下错误:
'MaterialsList' property was already registered by 'LEGOMaterialConverter'.
有人知道这个错误吗?