MultiBinding到静态属性和非静态 - listview不更新

时间:2012-09-10 12:34:54

标签: wpf listview static observablecollection multibinding

我有一个静态ObservableCollection>在非静态类ColorManager(单例)中命名为HeaderColorPairs。

此属性绑定到ListView的ItemsSource,如下所示:

        <ListView.ItemsSource>
            <MultiBinding Converter="{StaticResource xmlFormatter}" ConverterParameter="ColorList">
                <Binding Source="{StaticResource ResourceKey=colorManager}" Path="HeaderColorPairs"></Binding>
                <Binding Path="LogEntryListViewModel.SelectedLogEntry.Model.RawXml"></Binding>
            </MultiBinding>
        </ListView.ItemsSource>

这就是转换方法:

public object Convert(object[] value, Type targetType, object parameter, CultureInfo culture)
    {
        //parameter = outputtype
        parameter = (parameter == null) ? "" : parameter;
        string rawXml = value[1].ToString();
        if (rawXml != DependencyProperty.UnsetValue.ToString() && rawXml != string.Empty)
        {
            OutputTypes opt = (OutputTypes)Enum.Parse(typeof(OutputTypes), parameter.ToString().Length.ToString());
            if (opt == OutputTypes.Xml)
            {
                RawXmlFormatter rxf = new RawXmlFormatter(rawXml);
                return rxf.XmlStringArrayToRunList();
            }
            else if (opt == OutputTypes.ColorList)
            {
                return ColorManager.GetColorsRelatedToXml(rawXml);
            }
        }
        return null;
    }


public static ObservableCollection<KeyValuePair<string, Color>> GetColorsRelatedToXml(string rawXml)
    {
        List<string> headerList = RawXmlFormatter.GetHeadersFromRawXml(rawXml);
        SetUnsetColors(headerList);
        return new ObservableCollection<KeyValuePair<string, Color>>(HeaderColorPairs.Where(kvp => headerList.Contains(kvp.Key)));
    }

绑定工作得很好,它显示了ObservableCollection权限,但如果我在代码隐藏中更改集合,则ListView不会更新。

1 个答案:

答案 0 :(得分:0)

我现在使用的是非静态属性,而不是单例模式(也可以使用)。问题解决了;)