DataGrid.ScrollIntoView not works when DataGrid is grouping

[GF-Huang]

• .NET Core Version: .NET 5
• Windows version: 21H1
• Does the bug reproduce also in WPF for .NET Framework 4.8?: Yes/No
• Is this bug related specifically to tooling in Visual Studio (e.g. XAML Designer, Code editing, etc...)? If yes, please file the issue via the instructions here.

• Security issues and bugs should be reported privately, learn more via our responsible disclosure guidelines.

  Problem description: DataGrid.ScrollIntoView not works when DataGrid is grouping

  Actual behavior: DataGrid.ScrollIntoView not works when DataGrid is grouping

  Expected behavior: DataGrid.ScrollIntoView works well when in grouping.

  Minimal repro:

[ryalanms]

Thanks, @GF-Huang. Could you provide a repro project? Thanks.

[daisyTian0517]

@GF-Huang I used below code to scroll into line 21 of DataGrid

int rowindex = 20;
dataGrid.ScrollIntoView(dataGrid.Items[rowindex]);

It works well as:

Is that the same as your usage?

[GF-Huang]

Did you use a custom group template?

[daisyTian0517]

Yes, my xaml code is:

<Window.Resources>
        <Style x:Key="GroupHeaderStyle" TargetType="{x:Type GroupItem}">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type GroupItem}">
                        <Expander IsExpanded="True">
                            <Expander.Header>
                                <TextBlock Text="{Binding Path=Name}"/>
                            </Expander.Header>
                            <ItemsPresenter />
                        </Expander>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>
    <Grid>
        <DataGrid Name="dataGrid" Width="600" Height="250"  HorizontalAlignment="Left" VerticalAlignment="Top">
            <DataGrid.GroupStyle>
                <GroupStyle ContainerStyle="{StaticResource GroupHeaderStyle}">
                    <GroupStyle.Panel>
                        <ItemsPanelTemplate>
                            <DataGridRowsPresenter/>
                        </ItemsPanelTemplate>
                    </GroupStyle.Panel>
                </GroupStyle>
            </DataGrid.GroupStyle>
        </DataGrid>
        <Button Content="Button" HorizontalAlignment="Left" Margin="226,325,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click"/>
    </Grid>

[GF-Huang]

These make it works, thanks.

<GroupStyle.Panel>
                        <ItemsPanelTemplate>
                            <DataGridRowsPresenter/>
                        </ItemsPanelTemplate>
                    </GroupStyle.Panel>