DataGrid绑定问题 [英] Issue with DataGrid binding

问题描述

嗨
我遇到了以下问题.
我使用DataGrid和MVVM模式.当绑定集合为空时，出现异常:

Hi
I have met following problem.
I use DataGrid and MVVM pattern. When bound collection become empty I get exception:

The specified Visual is not an ancestor of this Visual

同样的问题在这里: http://wpf.codeplex.com/workitem/9699 [

Same problem is here: http://wpf.codeplex.com/workitem/9699[^]

But nobody wrote about solution there...And also, I dont use grouping.
I cant find any solution in the Internet...S.O.S! :)

Thanks in advance

UPDATE:

<DataGrid Visibility="{Binding ElementName=btnListView, Path=IsChecked, Converter={StaticResource BooleanToVisibilityConverter}}"

          ItemsSource="{Binding TitleContainsSearchResults, Mode=OneWay}"  FocusVisualStyle="{x:Null}"

          ColumnHeaderStyle="{StaticResource ResultsDataGridHeader}">
<datagrid.columns>.......</datagrid.columns>

绑定属性:

Bound property:

public ObservableCollection<CatalogueResultItemViewModel> TitleContainsSearchResults
{
    get
    {
        return titleContainsSearchResults;
    }
    set
    {
        titleContainsSearchResults = value;
        OnPropertyChanged("TitleContainsSearchResults");
    }
}

如果隐藏了DataGrid，则可以，如果可见，则可以-清除绑定集合后，我得到了排除.

When DataGrid is hidden then ok, when visible - then after bound collection cleared I get excepetion

推荐答案

在同一Web参考中，来自WPF团队的Alexis被接受为错误并将在以后的版本中修复.有了这些信息，您可以联系WPF团队.

In the same web reference, Alexis from WPF team, accepted as the bug and will be fixed in the future releases. With this info, you can reach out WPF team.

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