I'm using following XAML code...

<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid" DockPanel.Dock="Top" Height="150">

<Grid.Resources>
<Style TargetType="{x:Type xcdg:GroupLevelIndicatorPane}">
<Setter Property="Visibility" Value="Collapsed"/>
</Style>
</Grid.Resources>

<xcdg:DataGridControl x:Name="SelectInformation" HideSelection="True" NavigationBehavior="RowOnly" ReadOnly="True" />

</Grid>

But the Group Level Indicator Pane doesn't dissapear...

Is something wrong?

<xceed:DataGridControl.Resources>
<Style TargetType="xceed:GroupByControl">
<Setter Property="Visibility" Value="Collapsed" />
</Style>
</xceed:DataGridControl.Resources>

The style you are using should collapse the GroupLevelIndicatorPane, which is, in TableView, located to the left of groups to display their indentation/level.

<Style TargetType="{x:Type xcdg:GroupLevelIndicatorPane}">
<Setter Property="Visibility" Value="Collapsed"/>
</Style>

Are you certain that it is the GroupLevelIndicatorPane that you are trying to hide?

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Technical Writer - Xceed Software

In three words I can sum up everything I've learned about life: it goes on.

The documentation seems to be incorrect.  When I use this code:

        <Style TargetType="{x:Type xcdg:GroupLevelIndicatorPane}">
            <Setter Property="Visibility" Value="Collapsed"/>
        </Style>

The grouping pane does not disappear.  However, when I use this code:

        <Style TargetType="xcdg:GroupByControl">
            <Setter Property="Visibility" Value="Collapsed" />
        </Style>

It does disappear.  (This is with Xceed WPF Pro 2.0 ..)

 

Thanks to Diego above for saving me tons of time trying to get this to work !!

The GroupLevelIndicatorPane appears to the left of the groups to provide indentation, while the GroupByControl appears at the top of the grid to allow column headers to be dragged and groups created. These are 2 different controls so it is quite normal that one does not hide when you try to hide to other

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Technical Writer - Xceed Software

In three words I can sum up everything I've learned about life: it goes on.

I get an error when I try either one:

 System.InvalidOperationException was unhandled
Message: Items collection must be empty before using ItemsSource.

 I don't even know what this is trying to tell me.

jp

The error means that you are trying to bind the grid while there are items in the Items collection. You cannot manually add items to the Items collection AND bind through the ItemsSource property.

---

Technical Writer - Xceed Software

In three words I can sum up everything I've learned about life: it goes on.

hmm.  Then why do I only get the error if I try to hide the groupBy panel?

You can get that error by leaving out the "DataGridControl.View" element in the Xaml. Consider the sample below. If you leave out the bold lines, the Xaml is still valid and it compiles and runs, but gives the same exception you were getting.

                    <DataGrid:DataGridControl.View>
                        <Views:TableView UseDefaultHeadersFooters="False" >
                            <Views:TableView.FixedFooters>
                                <DataTemplate>
                                    <DataGrid:InsertionRow />
                                </DataTemplate>
                            </Views:TableView.FixedFooters>
                        </Views:TableView>
                    </DataGrid:DataGridControl.View>

hth