Questions on UI for WPF Forum

6 answers

231 views

Grouping causes first row of the grid to disappear

Hi,

I am using RadGridView with multiple/single field groupings based on conditions. When grid is first bound, it eats away first row of each group, which is event present in the datasource of the grid.

Code for setting default grouping when RadGridView is bound:

private void setGrouping() {

if (this.grdScope != null) {

this.grdScope.GroupDescriptors.Clear();

GroupDescriptor serviceDescriptor = new GroupDescriptor();

serviceDescriptor.Member = "Service";

serviceDescriptor.SortDirection = ListSortDirection.Ascending;

this.grdScope.GroupDescriptors.Insert(0, serviceDescriptor);

}

Edited: The missing row is restored when I toggle the radio buttons to change the mode (as below)
Below is the code to change the grouping:

//if radiobutton 1 is checked

private void rbService_Checked(object sender, RoutedEventArgs e) {

if (this.grdScope != null) {

this.grdScope.GroupDescriptors.Clear();

GroupDescriptor serviceDescriptor = new GroupDescriptor();

serviceDescriptor.Member = "Service";

serviceDescriptor.SortDirection = ListSortDirection.Ascending;

this.grdScope.GroupDescriptors.Insert(0, serviceDescriptor);

}

//if radiobutton 2 is checked

private void rbPhase_Checked(object sender, RoutedEventArgs e) {

if (this.grdScope != null) {

GroupDescriptor phaseDescriptor = new GroupDescriptor();

phaseDescriptor.Member = "Phase";

phaseDescriptor.SortDirection = ListSortDirection.Ascending;

this.grdScope.GroupDescriptors.Insert(0, phaseDescriptor);

this.grdScope.ShowGroupPanel = false;

}

Any ideas suggestions on this?

GridView

answered on 22 Nov 2011

2 answers

210 views

Drag and Drop from RadTreeView to WorkflowDesigner

Hi,

I have a WPF application in which I rehost the .Net 4.0 Workflow designer alongside a RadTreeView. Items on the RadTreeView are dragged onto the designer and, when dropped, morph into self configuring workflow activities based on the context from which they were dragged.

I am using Telerik's DragDropManager and the AddDragEnterHandler and AddDragOverHandler methods to add handlers to the Workflow Designer View and that is working perfectly. However...

I need to control the drag cue over the designer and that is proving to be more problematic.

I first tried the following:

RadDragAndDropManager.AddDragQueryHandler(this.Designer.View, this.Designer_DragQueryHandler);

However the Designer_DragQueryHandler delegate would never fire.

So I thought it must be that the designer is handling that event before my delegate can be executed, so I tried the following:

this.Designer.View.AddHandler(RadDragAndDropManager.DragQueryEvent, new EventHandler<DragDropQueryEventArgs>(this.Designer_DragQueryHandler), true);

This did not work either.

I am at a dead end on this now and would greatly appreciate any direction on how I might achieve this.

Thanks in advance
Chris

DragAndDrop

answered on 22 Nov 2011

0 answers

64 views

Rebind Itemsource with filters Issue

We are using autogenerated gridview and works fine but we have an issue with rebinding itemssource of filtered (by column default filters) by user.
If you refresh data (we do with background worker as datatable, then set grid itemsource to dataview.defaultview and call grid.rebind()) if the user has set column filters, it looses the ability to remove the filter but still reflects the filter in the grid.

GridView

asked on 22 Nov 2011

1 answer

317 views

Aligning a Ribbon Group to the right

Hi,

We are using RadRibbonView that contains RibbonTab with a number of Ribbon Groups. I want to show a textbox (for search functionality) and I want to be aligned to the right of the ribbon view. If I added this textbox inside a spate Ribbon Group, then that group is appended to the rest of the group, and not aligned to the right. Also, I tried to create a grid inside the Ribbon tab and set all the group on one column, and then have that textbox on the second column, but apparently Ribbon Tabs doesn’t accept Grid inside, I got a run time error.

Any idea how I can achieve this?!

Regards

RibbonView and RibbonWindow

answered on 21 Nov 2011

3 answers

114 views

Behaviors broken after Q3 release

In our application we use attached behaviors on RadControls in a number of places to avoid code-behind (mvvm pattern). These are used for some custom validation logic in grids, automatic significant digits displays on NumericUpDowns, and many others. After updating to the latest release (2011.3.1116.35) the following error occurs on all of these behaviors:

Cannot add content of type 'Behaviors.DynamicDecimalDigitsBehavior' to an object of type 'System.Windows.Interactivity.BehaviorCollection'. Error at object 'Behaviors.DynamicDecimalDigitsBehavior' in markup file 'setdatarenderingpropertiesview.xaml' Line 270 Position 22.

The project is built in .Net 3.5, and as such we reference System.Windows.Interactivity version 3.5.0.0.

General Discussions

answered on 21 Nov 2011

6 answers

105 views

Does this make any sense to try with this control?

Hello,

I am prototyping a user interface. Basic slimmed down requirements are that I have a list of items on left side of page for the user to select. On the right side of the list there will be a large view that contains information about the item that was selected in the list. I have put together UI like this many times and also have used many telerik controls in our applications. The TileView caught my eye for this one, thinking that I may be able to have something that serves the purpose and provides a bit of modern look and feel rather than just a list.

I practice MVVM and use prism with unity injection.

So what I am looking to get from this control is a templated list of items on left side in a single column. When one is selected a templated view of the information related to the selection animates (maximizes) over to the right. I do not want to ever have the items in a tiled view with several columnns and I do not want to have to Maximize in order to see information on the right side.

Can you let me know if I am going to be able to achieve this functionality with the control? In addition, if this is possible, could you provide a simple example for me to download?

Thanks,

Jason Munger
Osmose

TileView

answered on 21 Nov 2011

7 answers

729 views

BUG: Exception {"'System.Windows.Documents.Hyperlink' is not a Visual or Visual3D."}

Exception : {"'System.Windows.Documents.Hyperlink' is not a Visual or Visual3D."}

My XAML:

<telerik:RadTreeView ItemsSource="{Binding Doklad.polozky}">

<ItemsControl.ItemTemplate>

<DataTemplate>

<TextBlock Grid.Column="2">

<Hyperlink TextDecorations="None"

Command="{Binding EditPolozkaCommand, RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type UserControl}}}"

CommandParameter="{Binding}">

<Image Grid.Column="2" Width="16" Source="/Assets/Icons/Edit.png" Cursor="Hand"/>

</Hyperlink>

</TextBlock>

</Grid>

</DataTemplate>

</ItemsControl.ItemTemplate>

</telerik:RadTreeView>

StackTrace:

 at MS.Internal.Media.VisualTreeUtils.AsVisual(DependencyObject element, Visual& visual, Visual3D& visual3D)
 at MS.Internal.Media.VisualTreeUtils.AsNonNullVisual(DependencyObject element, Visual& visual, Visual3D& visual3D)
 at System.Windows.Media.VisualTreeHelper.GetParent(DependencyObject reference)
 at Telerik.Windows.Controls.ParentOfTypeExtensions.GetParent(DependencyObject element) in c:\TB\117\WPF_Scrum\Release_WPF_40\Sources\Development\Core\Controls\Extensions\ParentOfTypeExtensions.cs:line 85
 at Telerik.Windows.Controls.ParentOfTypeExtensions.<GetParents>d__0.MoveNext() in c:\TB\117\WPF_Scrum\Release_WPF_40\Sources\Development\Core\Controls\Extensions\ParentOfTypeExtensions.cs:line 77
 at System.Linq.Enumerable.<OfTypeIterator>d__aa`1.MoveNext()
 at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source)
 at Telerik.Windows.Controls.ParentOfTypeExtensions.ParentOfType[T](DependencyObject element) in c:\TB\117\WPF_Scrum\Release_WPF_40\Sources\Development\Core\Controls\Extensions\ParentOfTypeExtensions.cs:line 21
 at Telerik.Windows.Controls.ParentOfTypeExtensions.GetParent[T](DependencyObject element) in c:\TB\117\WPF_Scrum\Release_WPF_40\Sources\Development\Core\Controls\Extensions\ParentOfTypeExtensions.cs:line 64
 at Telerik.Windows.Controls.RadTreeView.OnLostFocus(Object sender, RoutedEventArgs e) in c:\TB\117\WPF_Scrum\Release_WPF_40\Sources\Development\Controls\Navigation\TreeView\RadTreeView.cs:line 1437
 at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
 at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
 at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
 at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
 at System.Windows.UIElement.OnLostFocus(RoutedEventArgs e)
 at System.Windows.UIElement.IsFocused_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
 at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
 at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
 at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
 at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
 at System.Windows.DependencyObject.ClearValueCommon(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata)
 at System.Windows.DependencyObject.ClearValue(DependencyPropertyKey key)
 at System.Windows.Input.FocusManager.OnFocusedElementChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
 at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
 at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
 at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
 at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
 at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
 at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
 at System.Windows.Input.FocusManager.SetFocusedElement(DependencyObject element, IInputElement value)
 at System.Windows.Input.KeyboardNavigation.UpdateFocusedElement(DependencyObject focusTarget)
 at System.Windows.FrameworkContentElement.OnGotKeyboardFocus(Object sender, KeyboardFocusChangedEventArgs e)
 at System.Windows.Input.KeyboardFocusChangedEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
 at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
 at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
 at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
 at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
 at System.Windows.ContentElement.RaiseTrustedEvent(RoutedEventArgs args)
 at System.Windows.Input.InputManager.ProcessStagingArea()
 at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
 at System.Windows.Input.KeyboardDevice.ChangeFocus(DependencyObject focus, Int32 timestamp)
 at System.Windows.Input.KeyboardDevice.TryChangeFocus(DependencyObject newFocus, IKeyboardInputProvider keyboardInputProvider, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)
 at System.Windows.Input.KeyboardDevice.Focus(DependencyObject focus, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)
 at System.Windows.Input.KeyboardDevice.Focus(IInputElement element)
 at System.Windows.ContentElement.Focus()
 at System.Windows.Documents.Hyperlink.OnMouseLeftButtonDown(Object sender, MouseButtonEventArgs e)
 at System.Windows.Documents.Hyperlink.OnMouseLeftButtonDown(MouseButtonEventArgs e)
 at System.Windows.UIElement.OnMouseLeftButtonDownThunk(Object sender, MouseButtonEventArgs e)
 at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
 at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
 at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
 at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
 at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
 at System.Windows.UIElement.OnMouseDownThunk(Object sender, MouseButtonEventArgs e)
 at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
 at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
 at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
 at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
 at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
 at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
 at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
 at System.Windows.Input.InputManager.ProcessStagingArea()
 at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
 at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
 at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
 at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
 at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
 at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
 at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
 at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
 at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

TreeListView

answered on 21 Nov 2011

1 answer

176 views

Tick inside chart area

Hello!
Is it possible to style ticks to have them inside chart area?

Best wishes,
Christopher

Chart

answered on 21 Nov 2011

1 answer

281 views

EF and IEditableObject

I have a DataForm that I load via EF. In order to support "Edits", I need to implement the IEditableObject interface but I can't get it to work. I am almost certain I am not the first one trying to do this so if anyone can point me in the right direction would be great.

Thanks in advance.

DataForm

answered on 21 Nov 2011

3 answers

127 views

Ambigious type reference error & FilteringControl style

I just added a style to my app (in appStyles.xaml) to hide the gridview distinct filter. The style is working but in design view of pages & windows i get the following errors:

This is what the resource declarations in the appStyles.xaml are:

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

<br>    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"<

br> xmlns:telerikGrid="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"<br

>    xmlns:Telerik_Windows_Controls_MaskedTextBox="clr-namespace:Telerik.Windows.Controls.MaskedTextBox;assembly=Telerik.Windows.Controls.Input"  >

Here's how i'm the style for the FilteringControl:

<Style TargetType="{x:Type telerik:FilteringControl}" > <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type telerik:FilteringControl}"> <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="1" Margin="{TemplateBinding Margin}"> <Border BorderBrush="White" BorderThickness="1" Background="{TemplateBinding Background}"> <Grid> <StackPanel HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" MaxWidth="350" Margin="{TemplateBinding Padding}" MinWidth="200" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"> <StackPanel x:Name="PART_DistinctFilter" Visibility="{TemplateBinding DistinctFiltersVisibility}"> <CheckBox x:Name="PART_SelectAllCheckBox" Visibility="Collapsed" Content="Select All" IsChecked="{Binding SelectAll, Mode=TwoWay}" Margin="0,2" telerik:LocalizationManager.ResourceKey="GridViewFilterSelectAll"> <telerik:StyleManager.Theme> <telerik:MetroTheme /> </telerik:StyleManager.Theme> </CheckBox> <ListBox x:Name="PART_DistinctValuesList" ItemsSource="{Binding DistinctValues}" ScrollViewer.HorizontalScrollBarVisibility="Auto"

<br>                                                     MaxHeight="100" SelectionMode="Multiple" Visibility="Collapsed" ><

br> <ListBox.ItemTemplate> <DataTemplate> <CheckBox Content="{Binding ConvertedValue}" IsChecked="{Binding IsActive, Mode=TwoWay}" VerticalContentAlignment="Center"> <telerik:StyleManager.Theme><br

>                                                            <

telerik:MetroTheme/> </telerik:StyleManager.Theme> </CheckBox> </DataTemplate> </ListBox.ItemTemplate> <telerik:StyleManager.Theme> <telerik:MetroTheme/> </telerik:StyleManager.Theme> </ListBox> </StackPanel> <StackPanel Margin="0,2" Visibility="{TemplateBinding FieldFiltersVisibility}"> <TextBlock Margin="0,2,0,0" telerik:LocalizationManager.ResourceKey="GridViewFilterShowRowsWithValueThat" Text="Show rows with value that"></TextBlock> <telerik:RadComboBox x:Name="PART_Filter1ComboBox" ItemsSource="{Binding AvailableActions}" SelectedItem="{Binding Filter1.Operator, Mode=TwoWay}" Margin="0,2"> <telerik:RadComboBox.ItemTemplate> <DataTemplate> <TextBlock> <TextBlock.Text> <Binding> <Binding.Converter> <telerik:FilterOperatorConverter/> </Binding.Converter> </Binding> </TextBlock.Text> </TextBlock> </DataTemplate> </telerik:RadComboBox.ItemTemplate> <telerik:StyleManager.Theme> <telerik:MetroTheme/> </telerik:StyleManager.Theme> </telerik:RadComboBox> <ContentControl x:Name="PART_Filter1ContentControl" DataContext="{Binding Filter1}" HorizontalContentAlignment="Stretch" Margin="0,2" VerticalContentAlignment="Stretch"/> <telerik:RadComboBox x:Name="PART_LogicalOperatorsComboBox" ItemsSource="{Binding LogicalOperators}" SelectedItem="{Binding FieldFilterLogicalOperator, Mode=TwoWay}" Margin="0,2"> <telerik:RadComboBox.ItemTemplate> <DataTemplate> <TextBlock> <TextBlock.Text> <Binding> <Binding.Converter> <telerik:FilterCompositionLogicalOperatorConverter/> </Binding.Converter> </Binding> </TextBlock.Text> </TextBlock> </DataTemplate> </telerik:RadComboBox.ItemTemplate> <telerik:StyleManager.Theme> <telerik:MetroTheme/> </telerik:StyleManager.Theme> </telerik:RadComboBox> <telerik:RadComboBox x:Name="PART_Filter2ComboBox" ItemsSource="{Binding AvailableActions}" SelectedItem="{Binding Filter2.Operator, Mode=TwoWay}" Margin="0,2"> <telerik:RadComboBox.ItemTemplate> <DataTemplate> <TextBlock> <TextBlock.Text> <Binding> <Binding.Converter> <telerik:FilterOperatorConverter/> </Binding.Converter> </Binding> </TextBlock.Text> </TextBlock> </DataTemplate> </telerik:RadComboBox.ItemTemplate> <telerik:StyleManager.Theme> <telerik:MetroTheme/> </telerik:StyleManager.Theme> </telerik:RadComboBox> <ContentControl x:Name="PART_Filter2ContentControl" DataContext="{Binding Filter2}" HorizontalContentAlignment="Stretch" Margin="0,2" VerticalContentAlignment="Stretch"/> </StackPanel> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Button x:Name="PART_ApplyFilterButton" Content="Filter" Grid.Column="0" Height="22" Margin="0,2,2,2" telerik:LocalizationManager.ResourceKey="GridViewFilter"> <telerik:StyleManager.Theme> <telerik:MetroTheme/> </telerik:StyleManager.Theme> </Button> <Button x:Name="PART_ClearFilterButton" Content="Clear Filter" Grid.Column="1" Height="22" Margin="2,2,0,2" telerik:LocalizationManager.ResourceKey="GridViewClearFilter"> <telerik:StyleManager.Theme> <telerik:MetroTheme/> </telerik:StyleManager.Theme> </Button> </Grid> </StackPanel> <telerik:RadButton x:Name="PART_FilterCloseButton" HorizontalAlignment="Right" Height="13" Margin="{TemplateBinding Padding}" VerticalAlignment="Top" Width="13"> <telerik:StyleManager.Theme> <telerik:MetroTheme/> </telerik:StyleManager.Theme> <Path Data=

"M4,4L5,4 5,5 4,5z M0,4L1,4 1,5 0,5z M3,3L4,3 4,4 3,4z M1,3L2,3 2,4 1,4z M2,2L3,2 3,3 2,3z M4,0L5,0 5,1 4,1 4,2 3,2 3,0.99999994 4,0.99999994z M0,0L1,0 1,0.99999994 2,0.99999994 2,2 1,2 1,1 0,1z"

Fill="Black" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Height="6" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Width="6"/> </telerik:RadButton> </Grid> </Border> </Border> </ControlTemplate> </Setter.Value> </Setter> <Setter Property="Background" Value="#FFE4E4E4"/> <Setter Property="BorderBrush" Value="#FF848484"/> <Setter Property="Padding" Value="5"/> <Setter Property="Margin" Value="0,2,0,0"/> <Setter Property="BorderThickness" Value="1"/> <Setter Property="VerticalContentAlignment" Value="Stretch"/> <Setter Property="HorizontalContentAlignment" Value="Stretch"/> <Setter Property="Foreground" Value="Black"/> <Setter Property="SnapsToDevicePixels" Value="True"/> </Style>

Here's from a window:

<Window x:Class="RawDataView"  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"<br

>    Title="Raw Data View" Height="437" Width="658" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" WindowStartupLocation="CenterOwner"><

br> <Window.Resources> <ResourceDictionary>   <Style x:Key="headerRow" TargetType="telerik:GridViewHeaderRow"> <Setter Property="Background" Value="#FFF5F5FD"/> </Style>   <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="/app.Styles.xaml" /> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Window.Resources>

Not sure if i need to qualify the FilteringControl style with something or add another xmlns reference to the styles. Thanks

GridView