Telerik Forums
UI for WPF Forum
2 answers
128 views
In an effort to address the customization issue of the QAT, I attempted to add a contextmenu for the RadRibbonButtons. However, from what I can tell, the ContextMenu has to be of type Windows.System.Controls.ContextMenu, which doesn't get themed correctly. 

Is there a way to use a contextmenu that picks up the correct theme/style being applied to the rest of the Telerik controls?

Cheers
Kiril Vandov
Telerik team
 answered on 13 Aug 2014
10 answers
107 views
I have a custom set of fields in a document and am using UpdateAllFields() when I want to render a completed document. I notice from the documentation that this is deprecated. What should I be using instead?

Thanks,
John
Anand
Top achievements
Rank 1
 answered on 13 Aug 2014
1 answer
171 views
Hi ..

I faced a critical issue whenever I clicked any group title in heat map control multiple times. This is the error I got::
" A first chance exception of type 'System.NullReferenceException' occurred in Telerik.Windows.Controls.DataVisualization.dll"
and this is the entire exception details

System.NullReferenceException was unhandled
  HResult=-2147467261
  Message=Object reference not set to an instance of an object.
  Source=Telerik.Windows.Controls.DataVisualization
  StackTrace:
       at Telerik.Windows.Controls.TreeMap.RadTreeMapItem.Select(Boolean selected)
       at Telerik.Windows.Controls.TreeMap.RadTreeMapItem.OnIsSelectedChanged(DependencyObject sender, 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 Telerik.Windows.Controls.TreeMap.RadTreeMapItem.set_IsSelected(Boolean value)
       at Telerik.Windows.Controls.TreeMap.RadTreeMapItem.OnMouseLeftButtonUp(MouseButtonEventArgs e)
       at System.Windows.UIElement.OnMouseLeftButtonUpThunk(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.OnMouseUpThunk(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)
       at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
       at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
       at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
       at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
       at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
       at System.Windows.Threading.Dispatcher.Run()
       at System.Windows.Application.RunDispatcher(Object ignore)
       at System.Windows.Application.RunInternal(Window window)
       at System.Windows.Application.Run(Window window)
       at System.Windows.Application.Run()
       at INtra_Day_EXplorer.App.Main() in d:\INDEX Mini\Main\obj\Debug\App.g.cs:line 0
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException:
Petar Marchev
Telerik team
 answered on 13 Aug 2014
1 answer
179 views
Hey,

The filter button in the column header still showing, any idea how to hide it?
I'm using the following code:

01.<telerik:RadGridView x:Name="radGridView" AutoGenerateColumns="False" GroupRenderMode="Flat" CanUserReorderColumns="True"
02.                             ColumnBackground="Transparent" RowIndicatorVisibility="Collapsed" ShowGroupPanel="False" RowHeight="17" SelectionMode="Multiple"
03.                             CanUserSelect="True" SelectionUnit="FullRow" EnableLostFocusSelectedState="False"
04.                             HeaderRowStyle="{DynamicResource GridViewHeaderRowStyle1}"
05.                             Style="{DynamicResource RadGridViewStyle1}"
06.                             RowStyle="{DynamicResource GridViewRowStyle1}"
07.                             GroupRowStyle="{DynamicResource GridViewGroupRowStyle1}"
08.                             ItemTemplate="{DynamicResource DataTemplate1}">
09.            <telerik:RadGridView.Columns>
10.                <telerik:GridViewDataColumn DataMemberBinding="{Binding DisplayName}" Header="{DynamicResource ManageTempListNameLabel}" Width="150" ShowFilterButton="false" IsFilteringDeferred="True" IsReadOnly="True"/>
11.                <telerik:GridViewDataColumn DataMemberBinding="{Binding Artist}" Header="{DynamicResource ManageTempListArtistLabel}" Width="100" ShowFilterButton="true" IsFilteringDeferred="True" IsReadOnly="True"/>
12.                <telerik:GridViewDataColumn DataMemberBinding="{Binding Album}" Header="{DynamicResource ManageTempListAlbumLabel}" Width="75" IsReadOnly="True" IsVisible="False"/>
13.                <telerik:GridViewDataColumn DataMemberBinding="{Binding Duration}" Header="{DynamicResource ManageTempListDurationLabel}" Width="55" IsResizable="False" IsReadOnly="True" IsVisible="False"/>
14.            </telerik:RadGridView.Columns>
15.        </telerik:RadGridView>

Boris
Telerik team
 answered on 13 Aug 2014
1 answer
91 views
I have an expensive operation to determine if there are children for a node so I am determining if there are children asynchronously.  

I have simulated LoadOnDemand with the TreeListView using a view model with a background worker.  When the worker completes it's work it fires OnPropertyChanged for the collection and the tree then shows the expander.

Is there a way to show an animation in place of where the expander normally resides?  I would like it to be similar to how the TreeView loading animation displays when used with IsLoadOnDemandEnabled.  Right now my tree nodes show no expander until after the async call is complete and it is confusing to end users.

Thanks
Dimitrina
Telerik team
 answered on 13 Aug 2014
4 answers
225 views
Hi,
I want to add tool tip for the next, previous, first, and last button in the datapager control .
Please suggest how can I achieve this.

best regards.
Kim
Top achievements
Rank 1
 answered on 13 Aug 2014
3 answers
279 views
Hi,
I have a view that one cell can have a multiple content from two different property of the data model, I try some of the sample from documentation and have no success, any hint or guide to get this done
thank you.

my code snippet 

<telerik:GridViewDataColumn
Header="Case Type"
DataMemberBinding="{Binding CaseDetails}"
Style="{DynamicResource ColumnTextCenter}">
                    <telerik:GridViewDataColumn.CellEditTemplate>
                        <DataTemplate>
                            <Grid>
                                <Grid.RowDefinitions>
                                    <RowDefinition/>
                                    <RowDefinition/>
                                </Grid.RowDefinitions>
                                <TextBlock Text="{Binding CaseDetails[0].Type}"/>
                                <TextBlock Text="{Binding CaseDetails[0].LandArea} Grid.Row="1 FontStyle="Italic"/>
                            </Grid>                           
                        </DataTemplate>
                    </telerik:GridViewDataColumn.CellEditTemplate>                   
                </telerik:GridViewDataColumn>
Stanley
Top achievements
Rank 1
 answered on 13 Aug 2014
2 answers
213 views
Is there a way to change the mouse cursor for the pan operation (actually the default one is "hand")?
Manuel
Top achievements
Rank 1
 answered on 12 Aug 2014
3 answers
233 views
When I press a button to add a shape to my canvas I need it to be placed inside my current viewing area on the canvas.  Currently, I have it hard-coded.  Do you have some example code to do this?  I pass the position using my "GroupDD" object.

Thanks in advance for your help,
Joel

private void btnAddGroup_Click(
    object sender,
    RoutedEventArgs e)
{
    try
    {
        ((AppSettings)DataContext).Model.AddGroup(
            new GroupDD()
            {
                Name = "New Group",
                DynamicProperties = new NameValuePairList()
                {
                    new NameValuePair()
                    {
                        Name = "PositionLabel",
                        Value = GroupNode.GetPointLabel(
                            new Point(20, 20))
                    }
                }
            });



        
public void AddGroup(
            GroupDD group)
        {
            GroupNode node = GetGroupNode(group);
            GraphSource.AddNode(node);
        }
 
        public GroupNode GetGroupNode(
            GroupDD group)
        {
            GroupNode node = new GroupNode()
            {
                Position = GetPoint(group.DynamicProperties),
                Group = group
            };
 
            return node;
        }
 
public class GroupNode : NodeViewModelBase, INotifyPropertyChanged
{
...
}

Joel Palmer
Top achievements
Rank 2
 answered on 12 Aug 2014
2 answers
607 views
Hello,

I'd like to override the keyboard shortcuts for copy, cut and paste because there are some very specific things that I need to do to copy/paste my objects. I've tried overriding the OnKeyDown event, but the commands never hit that method, even though other ctrl commands (ex. ctrl+s) do. Is there a way to have this this control returned to me when I set AllowCopy, AllowCut and AllowPaste to False?

Thanks,
Zak
Zak
Top achievements
Rank 1
 answered on 12 Aug 2014
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