[wpf] Gridsplitter가 이동할 때 WPF 그리드 확장기 목록보기가 공간을 채 웁니다.

이것이 필요한지 확인하십시오.

<Window ...>
<Grid>
    <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
                    <RowDefinition Height="Auto"/>
                            <RowDefinition Height="Auto"/>
                                    <RowDefinition Height="Auto"/>
                                        </Grid.RowDefinitions>
                                        
                                            <Expander Grid.Row="0" Collapsed="Expander_Collapsed_1">
                                                    <ListView x:Name="Lv1"/>
                                                        </Expander>
                                                            <GridSplitter Grid.Row="1" HorizontalAlignment="Stretch" VerticalAlignment="Top" ShowsPreview="true" ResizeDirection="Rows" Height="5" Background="#FFB82424"/>
                                                            
                                                                <Expander Grid.Row="2" Collapsed="Expander_Collapsed_1">
                                                                        <ListView x:Name="Lv2" Grid.Row="0"/>          
                                                                            </Expander>
                                                                                <GridSplitter Grid.Row="3" HorizontalAlignment="Stretch" VerticalAlignment="Top" ShowsPreview="true" ResizeDirection="Rows" Height="5" Background="#FFC51A1A"/>
                                                                                </Grid>
                                                                                </Window>
                                                                                

코드 :

private void Expander_Collapsed_1(object sender, RoutedEventArgs e)
{
    DependencyObject dobj = VisualTreeHelper.GetParent(sender as Expander);
        while (!(dobj is Grid))
                dobj = VisualTreeHelper.GetParent(dobj);
                
                    int i = Grid.GetRow(sender as Expander);
                        Grid grd = dobj as Grid;
                            grd.RowDefinitions[i].Height = GridLength.Auto;
                            }
                            

출처
https://stackoverflow.com/questions/39917247