在Itemssource上使用NotifyOfPropertyChange（Caliburn Micro）时，Datagrid不会更新

Question

我有一个绑定到datagrid的ItemsSource的BindableCollection。将新项目添加到集合时，datagrid会更新。但是，当我修改集合中的项目时，即使我在CM中使用NotifyOfPropertyChange方法，datagrid也不会更新。

    public BindableCollection<BaseDisplayData> DisplayData { get; private set; }

这有效：

void dataReportingService_TestStatusReceived(object sender, TestStatusEventArgs e)
        {
            BaseDisplayData match = DisplayData.SingleOrDefault(d => d.SampleID == e.SampleID && d.Test == e.Test);
            if (match != null)
            {
                match.Status = e.Status;
                DisplayData.Remove(match);
                DisplayData.Insert(0, match);
            }
        }

这不起作用：

void dataReportingService_TestStatusReceived(object sender, TestStatusEventArgs e)
        {
            BaseDisplayData match = DisplayData.SingleOrDefault(d => d.SampleID == e.SampleID && d.Test == e.Test);
            if (match != null)
            {
                match.Status = e.Status;
                NotifyOfPropertyChange(() => DisplayData);
            }
        }

绑定XAML：

<DataGrid AutoGenerateColumns="False" Name="DisplayData" ItemsSource="{Binding DisplayData, NotifyOnSourceUpdated=True}" >
    <DataGrid.Columns>
        <DataGridTextColumn Header="Sample ID" Width="Auto" Binding="{Binding SampleID}" />
        <DataGridTextColumn Header="H2 Ave." Width="*" Binding="{Binding HydrogenAverage, StringFormat=F1}" />
        <DataGridTextColumn Header="N2 Ave." Width="*" Binding="{Binding NitrogenAverage, StringFormat=F1}" />
        <DataGridTextColumn Header="O2 Ave." Width="*" Binding="{Binding OxygenAverage, StringFormat=F1}" />
        <DataGridTextColumn Header="Reporter" Width="*" Binding="{Binding ReporterID}" />
        <DataGridTextColumn Header="Test Status" Width="*" Binding="{Binding Status}" />
    </DataGrid.Columns>        
</DataGrid>