Multiple AggregateFunctions shown in different objects

[Leonardo]

Hi,

I have two different AggregateFunctions in a GridViewDataColumn, and I would like to show the results in different objects. The first one should be shown in a TextBox, and the second, in a TextBlock.

This is the closer I got so far, but, obviously, both AggregateFunctions results are shown in a TextBox:

<telerik:GridViewDataColumn DataMemberBinding="{Binding StadiumCapacity}" Header="Stadium capacity">
    <telerik:GridViewDataColumn.AggregateFunctions>
        <local:CapacityAggregation />
        <local:YearsLeftAggregation />
    </telerik:GridViewDataColumn.AggregateFunctions>
    <telerik:GridViewDataColumn.Footer>
        <StackPanel Orientation="Vertical">
            <telerik:AggregateResultsList ItemsSource="{Binding}" VerticalAlignment="Center">
                <ItemsControl.ItemTemplate>
                    <DataTemplate>
                        <TextBox VerticalAlignment="Center" Text="{Binding FormattedValue}" />
                    </DataTemplate>
                </ItemsControl.ItemTemplate>
            </telerik:AggregateResultsList>
        </StackPanel>
    </telerik:GridViewDataColumn.Footer>
</telerik:GridViewDataColumn>

How can I achieve this? Any help would be appreciated.

[Yoan]

Hi Leonardo,

You can achieve this by using a regular ItemsControl instead of our AggregateResultsList, which is an ItemsCotrol too, but you can not use its ItemTemplateSelector. Basically, by using ItemsControl's ItemTempalteSelector you can choose to return a different template for its items. Please check the attached sample project for a reference and let me know how it works for you.

Regards,
Yoan
Telerik

[Leonardo]

Hi, Yoan. Thanks for the answer, but unfortunately, it didn't help. I'm pasting my grid and attaching an image with the result.

Notice that my custom footer is in the second RadGridView element. It's important to mention that I have created my AggregateTemplateSelectorStyle class, and I think there is no problem with that, since, while debugging, the breakpoint in it is hit.

As you can see in the attached image, the result concatenates the AggregateFunctions' captions to the actual value, and no textbox is being rendered.

I appreciate if you could help.

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition  Height="Auto"/>
        <RowDefinition  Height="Auto"/>
    </Grid.RowDefinitions>
    <Grid.Resources>
        <Style x:Key="RadGridViewHeaderGroupStyle" TargetType="telerik:CommonColumnHeader">
            <Setter Property="HorizontalContentAlignment" Value="Center" />
            <Setter Property="Visibility" Value="Hidden" />
        </Style>
        <Style TargetType="telerik:GridViewGroupRow">
            <Setter Property="ShowHeaderAggregates" Value="False"></Setter>
            <Setter Property="IsExpanded" Value="True"></Setter>
        </Style>
        <Style TargetType="telerik:GridViewGroupFooterCell" x:Key="RadGridViewGroupFooterCellStyle">
            <Setter Property="VerticalContentAlignment" Value="Top"></Setter>
        </Style>
        <Style TargetType="telerik:GridViewGroupFooterCell" x:Key="RadGridViewGroupFooterCellStyleTotal">
            <Setter Property="VerticalContentAlignment" Value="Top"></Setter>
            <Setter Property="FontWeight" Value="Bold"/>
        </Style>
        <my:TotalUnistExplodeStyle x:Key="totalUnitsExplodeStyle">
            <my:TotalUnistExplodeStyle.ValidationErrorStyle>
                <Style TargetType="telerik:GridViewRow">
                    <Setter Property="Background" Value="Pink"/>
                    <Setter Property="ToolTip" Value="Total Units for Exploded don't match." />
                    <Setter Property="telerik:StyleManager.Theme" Value="" />
                </Style>
            </my:TotalUnistExplodeStyle.ValidationErrorStyle>
            <my:TotalUnistExplodeStyle.ValidationOkStyle>
                <Style TargetType="telerik:GridViewRow">
                    <Setter Property="Background" Value="White" />
                    <Setter Property="telerik:StyleManager.Theme" Value="Metro" />
                </Style>
            </my:TotalUnistExplodeStyle.ValidationOkStyle>
        </my:TotalUnistExplodeStyle>

        <selector:MultiEditableToBrushSelector x:Key="MultiEditableToBrushSelector">
            <selector:MultiEditableToBrushSelector.WhiteStyle>
                <Style TargetType="telerik:GridViewCell">
                    <Setter Property="Background" Value="White"/>
                </Style>
            </selector:MultiEditableToBrushSelector.WhiteStyle>
            <selector:MultiEditableToBrushSelector.LightYellowStyle>
                <Style TargetType="telerik:GridViewCell">
                    <Setter Property="Background" Value="#FFFFE0" />
                </Style>
            </selector:MultiEditableToBrushSelector.LightYellowStyle>
        </selector:MultiEditableToBrushSelector>
        <selector:SingleEditableToBrushSelector x:Key="SingleEditableToBrushSelector">
            <selector:SingleEditableToBrushSelector.WhiteStyle>
                <Style TargetType="telerik:GridViewCell">
                    <Setter Property="Background" Value="White"/>
                </Style>
            </selector:SingleEditableToBrushSelector.WhiteStyle>
            <selector:SingleEditableToBrushSelector.LightYellowStyle>
                <Style TargetType="telerik:GridViewCell">
                    <Setter Property="Background" Value="#FFFFE0" />
                </Style>
            </selector:SingleEditableToBrushSelector.LightYellowStyle>
        </selector:SingleEditableToBrushSelector>
        <Style TargetType="telerik:GridViewHeaderRow">
            <Setter Property="Visibility" Value="Hidden"></Setter>
        </Style>

        <my:AggregateTemplateSelectorStyle x:Key="aggregateTemplateSelectorStyle">
            <my:AggregateTemplateSelectorStyle.textBoxTemplate>
                <DataTemplate x:Name="textBoxTemplate">
                    <TextBox VerticalAlignment="Center" Text="{Binding FormattedValue}" />
                </DataTemplate>
            </my:AggregateTemplateSelectorStyle.textBoxTemplate>
            <my:AggregateTemplateSelectorStyle.textBlockTemplate>
                <DataTemplate x:Name="textBlockTemplate">
                    <TextBlock VerticalAlignment="Center" Text="{Binding FormattedValue}" />
                </DataTemplate>
            </my:AggregateTemplateSelectorStyle.textBlockTemplate>
        </my:AggregateTemplateSelectorStyle>

    </Grid.Resources>
    <telerik:RadGridView x:Name="PackRecommendationTotal" AutoGenerateColumns="False" IsReadOnly="False" RowIndicatorVisibility="Collapsed"
                                            GridLinesVisibility="Vertical" ShowGroupPanel="False" ItemsSource="{Binding PackRecommendationTotalList, Mode=TwoWay}" ShowGroupFooters="True"
                                                Grid.Row="0" Grid.Column="0" ShowColumnHeaders="False" CellEditEnded="PackRecommendationTotal_CellEditEnded"
                                                ValidatesOnDataErrors="None"   CanUserDeleteRows="False" RowStyleSelector="{StaticResource totalUnitsExplodeStyle}">
        <telerik:RadGridView.ColumnGroups>
            <telerik:GridViewColumnGroup  Name="Size" Header="Pack Type" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
            <telerik:GridViewColumnGroup  Name="Multi" Header="Multi" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
            <telerik:GridViewColumnGroup  Name="Single" Header="Single" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
            <telerik:GridViewColumnGroup  Name="Bulk" Header="Bulk" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
            <telerik:GridViewColumnGroup  Name="TotalUnits" Header="Total Units" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
            <telerik:GridViewColumnGroup  Name="UnitsPostReg" Header="Units Post Reg" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
        </telerik:RadGridView.ColumnGroups>
        <telerik:RadGridView.Columns>
            <telerik:GridViewDataColumn DataMemberBinding="{Binding DistributionCenter}" UniqueName="DistributionCenter" IsGroupable="True" ShowColumnWhenGrouped="False">
                <telerik:GridViewDataColumn.GroupHeaderTemplate>
                    <DataTemplate>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="{Binding Group.Items[0].Unsolvable}"  />
                        </StackPanel>
                    </DataTemplate>
                </telerik:GridViewDataColumn.GroupHeaderTemplate>
            </telerik:GridViewDataColumn>
            <telerik:GridViewDataColumn Header="Size" ColumnGroupName="Size" DataMemberBinding="{Binding SizeType}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyleTotal}" IsReadOnly="True">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <views:Total/>
                    <views:TotalPercent/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewMaskedInputColumn Header="Prepack" ColumnGroupName="Multi" DataMemberBinding="{Binding MultiPrePack}" HeaderTextAlignment="Center" Width="100"  IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" MaskType="Numeric" IsReadOnlyBinding="{Binding MultiPrepackEditable}" CellStyleSelector="{StaticResource MultiEditableToBrushSelector}">
                <telerik:GridViewMaskedInputColumn.AggregateFunctions>
                    <telerik:SumFunction />
                </telerik:GridViewMaskedInputColumn.AggregateFunctions>
            </telerik:GridViewMaskedInputColumn>
            <telerik:GridViewDataColumn Header="Imploded" ColumnGroupName="Multi" DataMemberBinding="{Binding MultiImploded}" HeaderTextAlignment="Center" Width="100"  IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewDataColumn Header="Exploded" ColumnGroupName="Multi" DataMemberBinding="{Binding MultiExploded}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction />
                    <views:MultiUnitTotalUnitsPercent Caption="% " ResultFormatString="{}{0:0.00}"/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewMaskedInputColumn Header="Prepack" ColumnGroupName="Single" DataMemberBinding="{Binding SinglePrepack}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" MaskType="Numeric" IsReadOnlyBinding="{Binding SinglePrepackEditable}" CellStyleSelector="{StaticResource SingleEditableToBrushSelector}">
                <telerik:GridViewMaskedInputColumn.AggregateFunctions>
                    <telerik:SumFunction />
                </telerik:GridViewMaskedInputColumn.AggregateFunctions>
            </telerik:GridViewMaskedInputColumn>
            <telerik:GridViewDataColumn Header="Imploded" ColumnGroupName="Single" DataMemberBinding="{Binding SingleImploded}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction />
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewDataColumn Header="Exploded" ColumnGroupName="Single" DataMemberBinding="{Binding SingleExploded}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction />
                    <views:SingleUnitTotalUnitsPercent Caption="% " ResultFormatString="{}{0:0.00}"/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewDataColumn Header="Exploded" ColumnGroupName="Bulk" DataMemberBinding="{Binding BulkExploded}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction />
                    <views:BulkUnitTotalUnitsPercent Caption="% " ResultFormatString="{}{0:0.00}"/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewDataColumn Header="Exploded" ColumnGroupName="TotalUnits" DataMemberBinding="{Binding TotalUnitsExploded}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction />
                    <views:TotalUnitsPercent Caption="% " ResultFormatString="{}{0:0.00}"/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewDataColumn Header="Total" ColumnGroupName="UnitsPostReg" DataMemberBinding="{Binding TotalUnitsPostReg}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction />
                    <views:TotalUnitsPostRegPercent Caption="% " ResultFormatString="{}{0:0.00}"/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>

            <telerik:GridViewDataColumn Header="Split" ColumnGroupName="UnitsPostReg" HeaderTextAlignment="Center" Width="100" IsGroupable="False" IsReadOnly="True" IsVisible="{Binding ShowSplitColumn}">
            </telerik:GridViewDataColumn>

        </telerik:RadGridView.Columns>
        <telerik:RadGridView.GroupDescriptors>
            <telerik:ColumnGroupDescriptor Column="{Binding Columns[\DistributionCenter\], ElementName=PackRecommendationTotal}" SortDirection="Ascending"  />
        </telerik:RadGridView.GroupDescriptors>
    </telerik:RadGridView>
    <telerik:RadGridView x:Name="PackRecommendation" AutoGenerateColumns="False" IsReadOnly="False" RowIndicatorVisibility="Collapsed"
                                    GridLinesVisibility="Vertical" ShowGroupPanel="False" ItemsSource="{Binding PackRecommendationList, Mode=TwoWay}" ShowGroupFooters="True"
                                    Grid.Row="1" Grid.Column="0" ShowColumnHeaders="False" RowEditEnded="radGridView_RowEditEnded"  CellEditEnded="PackRecommendation_CellEditEnded"
                                    ValidatesOnDataErrors="InViewMode" CanUserDeleteRows="False" RowStyleSelector="{StaticResource totalUnitsExplodeStyle}" >
        <telerik:RadGridView.ColumnGroups>
            <telerik:GridViewColumnGroup  Name="Size" Header="Pack Type" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
            <telerik:GridViewColumnGroup  Name="Multi" Header="Multi" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
            <telerik:GridViewColumnGroup  Name="Single" Header="Single" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
            <telerik:GridViewColumnGroup  Name="Bulk" Header="Bulk" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
            <telerik:GridViewColumnGroup  Name="TotalUnits" Header="Total Units" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
            <telerik:GridViewColumnGroup  Name="UnitsPostReg" Header="UnitsPostReg" HeaderStyle="{StaticResource RadGridViewHeaderGroupStyle}" />
        </telerik:RadGridView.ColumnGroups>
        <telerik:RadGridView.Columns>
            <telerik:GridViewDataColumn x:Name="distributionCenterGridView" DataMemberBinding="{Binding DistributionCenter}" UniqueName="DistributionCenter" IsGroupable="True" ShowColumnWhenGrouped="False">
                <telerik:GridViewDataColumn.GroupHeaderTemplate>
                    <DataTemplate>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="{Binding Group.Key, StringFormat='DC #\{0:C\}'}" />
                        </StackPanel>
                    </DataTemplate>
                </telerik:GridViewDataColumn.GroupHeaderTemplate>
            </telerik:GridViewDataColumn>
            <telerik:GridViewDataColumn Header="Size" ColumnGroupName="Size" DataMemberBinding="{Binding SizeType}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyleTotal}" IsReadOnly="True" ValidatesOnDataErrors="None">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <views:Total/>
                    <views:TotalPercent/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewDataColumn Header="Prepack" ColumnGroupName="Multi" DataMemberBinding="{Binding MultiPrePack}" HeaderTextAlignment="Center" Width="100"  IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True" ValidatesOnDataErrors="None">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction />
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewMaskedInputColumn Header="Imploded" ColumnGroupName="Multi" DataMemberBinding="{Binding MultiImploded, Mode=TwoWay}" HeaderTextAlignment="Center" Width="100"  IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" MaskType="Numeric">
                <telerik:GridViewMaskedInputColumn.AggregateFunctions>
                    <telerik:SumFunction/>
                </telerik:GridViewMaskedInputColumn.AggregateFunctions>
            </telerik:GridViewMaskedInputColumn>
            <telerik:GridViewDataColumn Header="Exploded" ColumnGroupName="Multi" DataMemberBinding="{Binding MultiExploded}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True" ValidatesOnDataErrors="None">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction />
                    <views:MultiUnitTotalUnitsPercent Caption="% " ResultFormatString="{}{0:0.00}"/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewDataColumn Header="Prepack" ColumnGroupName="Single" DataMemberBinding="{Binding SinglePrepack}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True" ValidatesOnDataErrors="None">
            </telerik:GridViewDataColumn>
            <telerik:GridViewMaskedInputColumn Header="Imploded" ColumnGroupName="Single" DataMemberBinding="{Binding SingleImploded, Mode=TwoWay}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" MaskType="Numeric">
                <telerik:GridViewMaskedInputColumn.AggregateFunctions>
                    <telerik:SumFunction />
                </telerik:GridViewMaskedInputColumn.AggregateFunctions>
            </telerik:GridViewMaskedInputColumn>
            <telerik:GridViewDataColumn Header="Exploded" ColumnGroupName="Single" DataMemberBinding="{Binding SingleExploded}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True" ValidatesOnDataErrors="None">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction />
                    <views:SingleUnitTotalUnitsPercent Caption="% " ResultFormatString="{}{0:0.00}"/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewMaskedInputColumn Header="Exploded" ColumnGroupName="Bulk" DataMemberBinding="{Binding BulkExploded}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="False" MaskType="Numeric">
                <telerik:GridViewMaskedInputColumn.AggregateFunctions>
                    <telerik:SumFunction />
                    <views:BulkUnitTotalUnitsPercent Caption="% " ResultFormatString="{}{0:0.00}"/>
                </telerik:GridViewMaskedInputColumn.AggregateFunctions>
            </telerik:GridViewMaskedInputColumn>
            <telerik:GridViewDataColumn Header="Exploded" ColumnGroupName="TotalUnits" DataMemberBinding="{Binding TotalUnitsExploded}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True" ValidatesOnDataErrors="None">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction />
                    <views:TotalUnitsPercent Caption="% " ResultFormatString="{}{0:0.00}"/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewDataColumn Header="Total" ColumnGroupName="UnitsPostReg" DataMemberBinding="{Binding TotalUnitsPostReg}" HeaderTextAlignment="Center" Width="100" IsGroupable="False" GroupFooterCellStyle="{StaticResource RadGridViewGroupFooterCellStyle}" IsReadOnly="True" ValidatesOnDataErrors="None">
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <telerik:SumFunction />
                    <views:TotalUnitsPostRegPercent Caption="% " ResultFormatString="{}{0:0.00}"/>
                </telerik:GridViewDataColumn.AggregateFunctions>
            </telerik:GridViewDataColumn>
            <telerik:GridViewDataColumn Header="Split" ColumnGroupName="UnitsPostReg" HeaderTextAlignment="Center" Width="100" IsGroupable="False" IsReadOnly="True" ValidatesOnDataErrors="None" IsVisible="{Binding ShowSplitColumn}" >
                <telerik:GridViewDataColumn.AggregateFunctions>
                    <views:TotalUnitsPostRegDC Caption="TotalDC" />
                    <views:TotalUnitsPostRegDCPercent Caption="TotalDCPercent" />
                </telerik:GridViewDataColumn.AggregateFunctions>


                <telerik:GridViewDataColumn.Footer>
                    <StackPanel Orientation="Vertical">
                        <ItemsControl ItemsSource="{Binding}" VerticalAlignment="Center" ItemTemplateSelector="{StaticResource aggregateTemplateSelectorStyle}">
                            <ItemsControl.ItemsPanel>
                                <ItemsPanelTemplate>
                                    <StackPanel Orientation="Vertical" />
                                </ItemsPanelTemplate>
                            </ItemsControl.ItemsPanel>
                        </ItemsControl>
                    </StackPanel>
                </telerik:GridViewDataColumn.Footer>

            </telerik:GridViewDataColumn>
        </telerik:RadGridView.Columns>
        <telerik:RadGridView.GroupDescriptors>
            <telerik:ColumnGroupDescriptor Column="{Binding Columns[\DistributionCenter\], ElementName=PackRecommendation}" SortDirection="Ascending"  />
        </telerik:RadGridView.GroupDescriptors>
    </telerik:RadGridView>
</Grid>

Thank you.

[Yoan]

Hi Leonardo,

I am afraid that with the supplied information I cannot figure out what is going on. May I ask you to open a new support ticket where you can attach a sample project. I will debug it on my side and I will assist you further.

Regards,
Yoan
Telerik

[Leonardo]

Hello, Yoan.

Unfortunately I can't paste it. Anyway, when I tested it in a new project, it worked. But when I do the same thing in my actual project, the TextBox doesn't show.

Could this particular template selector be overridden by some other style that I have?

[Yoan]

Hi,

It could be overridden if you are setting the ItemTemplate of the ItemsControl. Please check in your application for this code.

Regards,
Yoan
Telerik

[Leonardo]

Yoan,

that was my mistake. I was using a footer, when, actually, what I needed was a GroupFooter. So, by using the code below, it worked:

<telerik:GridViewDataColumn.GroupFooterTemplate>
    <DataTemplate>
        <StackPanel>
            <ItemsControl ItemsSource="{Binding}" VerticalAlignment="Center" ItemTemplateSelector="{StaticResource aggregateTemplateSelectorStyle}" />
        </StackPanel>
    </DataTemplate>
</telerik:GridViewDataColumn.GroupFooterTemplate>

Thanks a lot for your help, I really appreciate it!