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Expand/Collapse All functionality not working consistenly in Hierarchical RadGridView

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lakshmi jeeva asked on 01 Nov 2010, 07:29 PM

collapse.JPG

Hi,

    I have created hierarchical radgridview.Parent and child relations having different datatables.It is binding properly.

    I am having Expand All/Collapse All functionality.When i open this page all rows are expanded.That is working fine.Suppose grid having more rows then vertical scroll bar will come.If i move scrollbar to bottom and if i click expand/collapse all button.It is not collapsing last row.

    Below is the code for gridview definition

        </Grid.Resources>
        <Grid.RowDefinitions>
         <RowDefinition Height="Auto" />
         <RowDefinition Height="*"/>
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
              <Button x:Name="cmdExpand" Content="Summary Only" IsEnabled="False" Height="20" HorizontalAlignment="Left" Grid.Row="0"/>
               <Button x:Name="cmdExportToExcel" Content="Copy to Clipboard" IsEnabled="False" Height="20" HorizontalAlignment="Right" Grid.Row="0"/>

         <tkGrid:RadGridView x:Name="grdAuditData" Grid.Row="1"
     AutoGenerateColumns="False"
     ShowGroupPanel="False"
     Visibility="Visible"
     RowIndicatorVisibility="Collapsed"
     ShowColumnFooters="False"
     ShowGroupFooters="False"
     ScrollViewer.VerticalScrollBarVisibility="Auto"
     ScrollViewer.HorizontalScrollBarVisibility="Auto"
     GridLinesVisibility="None"
     CanUserFreezeColumns="False"
     CanUserInsertRows="False"
     CanUserResizeColumns="True"
                    CanUserSelect="False"
     BorderThickness="0"
                    ScrollMode="RealTime"
     Background="{StaticResource Brush_WindowBackground}"
                    RowStyle="{StaticResource AuditDataParentGridViewRowStyle}"

     IsReadOnly="True" >
            <tkGrid:RadGridView.Columns>
                <tkGrid:GridViewDataColumn DataMemberBinding="{Binding AuditTime}" Header="Modified Date Time" />
                <tkGrid:GridViewDataColumn DataMemberBinding="{Binding Record}" Header="Record" />
                <tkGrid:GridViewDataColumn DataMemberBinding="{Binding Action}" Header="Action" />
                <tkGrid:GridViewDataColumn DataMemberBinding="{Binding User}" Header="Database Account" />
                <tkGrid:GridViewDataColumn DataMemberBinding="{Binding AuditNo_PK}" Header="Audit PK"/>
                <tkGrid:GridViewDataColumn DataMemberBinding="{Binding Audited_PK}" Header="Audited PK" />
                <tkGrid:GridViewDataColumn DataMemberBinding="{Binding UserName}" Header="User Name" />
                <tkGrid:GridViewDataColumn DataMemberBinding="{Binding EmployeeID}" Header="Employee ID" />
            </tkGrid:RadGridView.Columns>
    <tkGrid:RadGridView.HierarchyChildTemplate>
                <DataTemplate>
      <tkGrid:RadGridView x:Name="grdAuditDataChild" CanUserFreezeColumns="False"
          ShowColumnHeaders="False"
                                        Background="{StaticResource Brush_WindowBackground}"
                                        RowStyle="{StaticResource AuditDataChildGridViewRowStyle}"
                                        AutoGenerateColumns="False"
                                        ItemsSource="{Binding Details}"
                                        Margin="0,-4,0,0"
                                        ShowGroupPanel="False"
                                        IsReadOnly="True"
                                        GroupPanelBackground="White"
                         CanUserInsertRows="False"
                         CanUserResizeColumns="True"
                                        CanUserSelect="False"
          BorderBrush="{StaticResource Brush_WindowBackground}"
                         BorderThickness="1,0,1,0">
                        <tkGrid:RadGridView.Columns>
                            <tkGrid:GridViewDataColumn Width="40">
                                <tkGrid:GridViewDataColumn.CellStyle>
                                    <Style TargetType="tkGridView:GridViewCell">
                                        <Setter Property="Background" Value="{StaticResource Brush_WindowBackground}" />
                                        <Setter Property="BorderThickness" Value="0" />
                                    </Style>
                                </tkGrid:GridViewDataColumn.CellStyle>
                            </tkGrid:GridViewDataColumn>
                            <tkGrid:GridViewDataColumn MinWidth="150" DataMemberBinding="{Binding Field}">
                                <tkGrid:GridViewDataColumn.CellStyle>
                                    <Style TargetType="tkGridView:GridViewCell">
                                        <Setter Property="Padding" Value="6,0,0,0" />
                                    </Style>
                                </tkGrid:GridViewDataColumn.CellStyle>
                            </tkGrid:GridViewDataColumn>
                            <tkGrid:GridViewDataColumn MinWidth="150" DataMemberBinding="{Binding OldValue}">
                                <tkGrid:GridViewDataColumn.CellTemplate>
                                    <DataTemplate>
                                        <Grid HorizontalAlignment="Stretch">
                                            <TextBlock Text="{Binding OldValue}" Margin="5,0,0,0" x:Name="txtOldValueText" HorizontalAlignment="Left"/>
                                            <Line Margin="5,0,0,0" StrokeThickness="1" Stroke="Red" Y1="7" Y2="7" X1="0" X2="150" HorizontalAlignment="Left" Visibility="{Binding OldValue, Converter={StaticResource ValueExistsToVisibilityConverter}}" Width="{Binding Path=ActualWidth, ElementName=txtOldValueText}" />
                                        </Grid>
                                    </DataTemplate>
                                </tkGrid:GridViewDataColumn.CellTemplate>
                            </tkGrid:GridViewDataColumn>
                            <tkGrid:GridViewDataColumn MinWidth="150" DataMemberBinding="{Binding NewValue}" />
                        </tkGrid:RadGridView.Columns>
                    </tkGrid:RadGridView>
    </DataTemplate>
            </tkGrid:RadGridView.HierarchyChildTemplate>
        </tkGrid:RadGridView>
      <Button x:Name="cmdClose" Content="Close" IsEnabled="False" Height="20" HorizontalAlignment="Center" VerticalAlignment="Center" Grid.Row="2"/>

</Grid>

I am binding grid like this

Headers.Count > 0 Then

'Dim oDT As Silverlight.DataTable

Dim definition As New GridViewTableDefinition()

definition.Relation =

New PropertyRelation("Details")

grdAuditData.ChildTableDefinitions.Add(definition)

Me.grdAuditData.ItemsSource = Headers

else

MessageBox.Show("No Records returned", "Data Validation Errors", MessageBoxButton.OK)

Me.Close()

End If

Below is the code for ExpandAll/Collpase All button.

Me.grdAuditData.ExpandAllHierarchyItems() 'For expand all rows

Me.grdAuditData.CollapseAllHierarchyItems() 'For Collapse all rows.

Herewith i have attcahed the screenshot.Could you please help me why it is not working consistenly.

1 Answer, 1 is accepted

answered on 03 Nov 2010, 05:30 PM

Hello lakshmi jeeva,

Basically, you can use the ExpandAllHierarchicalItems() and CollapseAllHierarchicalItems() even for items that are not visible at the moment. So, there is supposed to be no problem on collapsing all of them at once. However, please share a bit more information about your exact specifications. What version of RadGridView are you using ? Are you working with Silverlight 3 or Silverlight 4 ? What is the type of your ItemsSource ? Do you use a DataTable ?

Regards,
Maya
the Telerik team

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