WPF Datagrid UI仅在窗口调整大小后显示行

Question

我在基于下拉选择

更新数据网格内容时遇到了一个非常奇怪的场景

我有一个组合框和一个数据网格，根据选定的组合框项目，网格内容将动态显示。

问题：最初，数据网格在加载时将为空。当我选择组合框项目时，相关数据将绑定到数据网格，但数据不会显示。当我调整窗口大小（反过来调整数据网格大小）时，将显示结果。

这是我的datagrid代码

<DataGrid Grid.Row="1"
          Name="dgSchools"
          Grid.ColumnSpan="2"
          VerticalAlignment="Stretch"
          Visibility="{Binding IsChecked, ElementName=rdSchools, Converter={StaticResource BooleanToVisibilityConverter}}"
          AutoGenerateColumns="False" 
          Margin="0,5"
          Background="White"
          HeadersVisibility="Column"
          ItemsSource="{Binding SchoolDetails}" 
          SelectedItem="{Binding SelectedSchoolDetail}"
          Height="150"
          HorizontalScrollBarVisibility="Hidden"
          SelectionMode="Single"
          CanUserAddRows="False"
          CanUserSortColumns="True">
    <DataGrid.Columns>
        <DataGridTextColumn Header="Location" Binding="{Binding Location}"/>
        <DataGridHyperlinkColumn Header="School Name" Width="3*" Binding="{Binding Name}" IsReadOnly="True">
            <DataGridHyperlinkColumn.ElementStyle>
                <Style>
                    <EventSetter Event="Hyperlink.Click" Handler="OnSchoolNameClick"/>
                </Style>
            </DataGridHyperlinkColumn.ElementStyle>
        </DataGridHyperlinkColumn>
    </DataGrid.Columns>
</DataGrid>

SchoolDetails使用ReactiveUI

ReactiveList(Of School)

Private lstSchools As ReactiveList(Of School)
Public Property SearchResults() As ReactiveList(Of School)
    Get
        Return lstSchools
    End Get
    Set(value As ReactiveList(Of School))
        Me.RaiseAndSetIfChanged(lstSchools, value)
    End Set
End Property