Questions on UI for WPF Forum

13 answers

236 views

Ribbon

Hi,
Are there any plans to do a Ribbon as found in MS Office 2007?
Cheers,

Michael

General Discussions

answered on 06 Oct 2009

5 answers

118 views

Random errors in GridView

Hello,

We've been seeing a couple of errors popping up with the Grid. One of them says something like "Count must be positive and count must refer to a location within the string/array/collection. Parameter name : count." And another is about the "Index must be within range"...

I don't have steps to reproduce the issue; it seems to happen randomly, but when we do get the error, it's usually on load of the grid. Then we can reload and everything is fine until it happens again. It has happened during sort operations also.

Laura

GridView

answered on 06 Oct 2009

1 answer

98 views

Removing rows

Hi,

I have a grid bound to a DataTable (cannot use Observable collection of custom objects), when I add or delete a row from the dataTable instance the grid is not refreshed, which is kind of expected. But the problem is when I force a grid refresh, the only way I found to accomplish that was doing something like this:

    
            myGrid.ItemsSource = null; 
        
            myGrid.ItemsSource = samplesDataTable;

This is extremely expensive. Is there a more convinient and less expensive way to refresh the grid rows?

Thanks,
Marco

GridView

answered on 06 Oct 2009

7 answers

280 views

Error when setting ShowButtons="False"

I'm getting the following exception when I try to set the ShowButtons property of the RadNumericUpDown to false

Cannot animate the 'Visibility' property on a 'System.Windows.Controls.Grid' using a 'System.Windows.Media.Animation.ObjectAnimationUsingKeyFrames'. For details see the inner exception.

Here's the full exception

System.Windows.Media.Animation.AnimationException was unhandled

Message="Cannot animate the 'Visibility' property on a 'System.Windows.Controls.Grid' using a 'System.Windows.Media.Animation.ObjectAnimationUsingKeyFrames'. For details see the inner exception."

Source="PresentationCore"

StackTrace:

at System.Windows.Media.Animation.AnimationStorage.OnCurrentTimeInvalidated(Object sender, EventArgs args)

at System.Windows.Media.Animation.Clock.FireEvent(EventPrivateKey key)

at System.Windows.Media.Animation.Clock.RaiseAccumulatedEvents()

at System.Windows.Media.Animation.TimeManager.RaiseEnqueuedEvents()

at System.Windows.Media.Animation.TimeManager.Tick()

at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)

at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)

at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)

at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)

at System.Windows.Threading.DispatcherOperation.InvokeImpl()

at System.Threading.ExecutionContext.runTryCode(Object userData)

at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Windows.Threading.DispatcherOperation.Invoke()

at System.Windows.Threading.Dispatcher.ProcessQueue()

at System.Windows.Threading.Dispatcher.WndProcHook(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, Boolean isSingleParameter)

at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)

at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter)

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.TranslateAndDispatchMessage(MSG& msg)

at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)

at System.Windows.Application.RunInternal(Window window)

at Shell.App.Main() in D:\V\Code\Production\Sizing\Shell\obj\Debug\App.g.cs:line 0

at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

InnerException: System.InvalidOperationException

Message="The animation(s) applied to the 'Visibility' property calculate a current value of 'Collapsed', which is not a valid value for the property."

Source="PresentationCore"

StackTrace:

at System.Windows.Media.Animation.AnimationStorage.GetCurrentPropertyValue(AnimationStorage storage, DependencyObject d, DependencyProperty dp, PropertyMetadata metadata, Object baseValue)

at System.Windows.Media.Animation.AnimationStorage.OnCurrentTimeInvalidated(Object sender, EventArgs args)

InnerException:

and here's the XAML that I'm using for the control

                            <telerik:RadNumericUpDown Grid.Column="1"         
                                              x:Name="inpPMax" Style="{StaticResource InputNumbers}"         
                                              ValueFormat="Numeric" NumberFormatInfo="{Binding Path=DisplayFormat}"         
                                              ShowButtons="False"         
                                              IsEnabled="{Binding Path=UserEntered}"         
                                              Minimum="{Binding Path=Minimum}" Maximum="{Binding Path=Maximum}"         
                                              SmallChange="1" LargeChange="10" GotFocus="inpPMax_GotFocus">         
                        <telerik:RadNumericUpDown.Value>         
                            <Binding Path="DisplayValue"  Mode="TwoWay" UpdateSourceTrigger="PropertyChanged" ValidatesOnDataErrors="True"/>         
                        </telerik:RadNumericUpDown.Value>         
                    </telerik:RadNumericUpDown>         
                     
                     
                        <Style x:Key="InputNumbers" TargetType="{x:Type telerik:RadNumericUpDown}">         
                            <Setter Property="Height" Value="25"/>         
                            <Setter Property="FontSize" Value="12"/>         
                            <Setter Property="Margin" Value="2"/>         
                            <Setter Property="HorizontalContentAlignment" Value="Right"/>         
                        </Style>         

this exception only occurs when the view becomes active. Meaning I only see the exception when the tab that holds these RadNumericUpDown controls has been activated.

thanks

Josh

NumericUpDown

answered on 05 Oct 2009

2 answers

142 views

Styling Toolbar

I would like to change the style of the toolbar, however when editing the style or controltemplate in Blend it forces me to "Create New". I would prefer to "Edit Existing" so that I can start with the existing template to ensure I am providing all the necessary control parts. Do you have any suggestions, or can you send me a default style for the toolBar to work with?

Thank you!

ToolBar

answered on 05 Oct 2009

7 answers

266 views

Memory leak?

Hi,

In the application we're building we use the RadGridView (version 2009.2.701.35) in an UserControl that is added to a TabControl as the content of a TabItem.

When the TabItem containing the RadGridView is removed from the TabControl (=closed), the application still holds a reference to the UserControl. We've tried everything, including memory profiling. If we replace the RadGridView with a standard WPF ListView on the UserControl, the reference to the UserControl no longer exists!

To reproduce this in a more simple environment, we created a new WPF application containing 2 Windows. The startup window contains 1 button, doing nothing more then showing the 2nd window. The 2nd window contains a RadGridView, and in the constructor of the window the RadGridView is filled with 300.000 items.

Memory profiling that test application shows that after closing the 2nd window, there is still a reference to it, while if we replace the RadGridView with a standard WPF ListView again, there is no reference.

Is there something we're missing or is this a (serious) bug in the RadGridView? I can't find anything in the release notes newer then the version we use that this is already fixed, nor can I find anything on the forums about a memory leak...

GridView

answered on 05 Oct 2009

3 answers

122 views

RadTreeView with columns error

Hello, I'm using your RadTreeView with Columns example and a few days ago, I started getting these two strange exceptions, they seem to be in the RadTreeViewItem code, so I can't trace them.

Error 1) When I call the Clear() event from the RadTreeView

Message:

"Object reference not set to an instance of an object."

Stack trace:

at Telerik.Windows.Controls.RadTreeViewItem.HandleSingleClickFunctionality() in c:\Builds\WPF_Scrum\Navigation_WPF\Sources\Development\Controls\Navigation\TreeView\RadTreeViewItem.Events.cs:line 439

at Telerik.Windows.Controls.RadTreeViewItem.OnHeaderMouseLeftButtonUp(Object sender, MouseEventArgs e) in c:\Builds\WPF_Scrum\Navigation_WPF\Sources\Development\Controls\Navigation\TreeView\RadTreeViewItem.Events.cs:line 863

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.CrackMouseButtonEventAndReRaiseEvent(DependencyObject sender, MouseButtonEventArgs e)

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.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, Int32 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, Boolean isSingleParameter)

at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)

Error 2) When I click on a RadTreeViewItem to select it.

Message:

"The specified Visual and this Visual do not share a common ancestor, so there is no valid transformation between the two Visuals."

Stack Trace:

" at System.Windows.Media.Visual.TransformToVisual(Visual visual)\r\n at Telerik.Windows.Controls.RadTreeViewItem.get_IsInViewport() in c:\\Builds\\WPF_Scrum\\Navigation_WPF\\Sources\\Development\\Controls\\Navigation\\TreeView\\RadTreeViewItem.Properties.cs:line 434\r\n at Telerik.Windows.Controls.RadTreeViewItem.BringIntoView() in c:\\Builds\\WPF_Scrum\\Navigation_WPF\\Sources\\Development\\Controls\\Navigation\\TreeView\\RadTreeViewItem.cs:line 341\r\n at Telerik.Windows.Controls.RadTreeViewItem.OnIsSelectedPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs args) in c:\\Builds\\WPF_Scrum\\Navigation_WPF\\Sources\\Development\\Controls\\Navigation\\TreeView\\RadTreeViewItem.Properties.cs:line 1161\r\n at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)\r\n at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)\r\n at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)\r\n at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, OperationType operationType)\r\n at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, OperationType operationType, Boolean isInternal)\r\n at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)\r\n at Telerik.Windows.Controls.RadTreeViewItem.set_IsSelected(Boolean value) in c:\\Builds\\WPF_Scrum\\Navigation_WPF\\Sources\\Development\\Controls\\Navigation\\TreeView\\RadTreeViewItem.Properties.cs:line 417\r\n at Telerik.Windows.Controls.RadTreeView.SelectionChanger_SelectionChanged(Object sender, SelectionChangedEventArgs e) in c:\\Builds\\WPF_Scrum\\Navigation_WPF\\Sources\\Development\\Controls\\Navigation\\TreeView\\RadTreeView.cs:line 2735\r\n at Telerik.Windows.Controls.SelectionChanger`1.InvokeSelectionChangedEvent() in c:\\Builds\\WPF_Scrum\\Core_WPF\\Sources\\Development\\Core\\Controls\\Common\\SelectionChanger.cs:line 322\r\n at Telerik.Windows.Controls.SelectionChanger`1.End() in c:\\Builds\\WPF_Scrum\\Core_WPF\\Sources\\Development\\Core\\Controls\\Common\\SelectionChanger.cs:line 74\r\n at Telerik.Windows.Controls.RadTreeView.SetSelectedItem(RadTreeViewItem itemContainer) in c:\\Builds\\WPF_Scrum\\Navigation_WPF\\Sources\\Development\\Controls\\Navigation\\TreeView\\RadTreeView.cs:line 2687\r\n at Telerik.Windows.Controls.RadTreeView.HandleItemSelectionFromUI(RadTreeViewItem itemToSelect) in c:\\Builds\\WPF_Scrum\\Navigation_WPF\\Sources\\Development\\Controls\\Navigation\\TreeView\\RadTreeView.cs:line 2133\r\n at Telerik.Windows.Controls.RadTreeViewItem.OnHeaderMouseLeftButtonDown(Object sender, MouseButtonEventArgs e) in c:\\Builds\\WPF_Scrum\\Navigation_WPF\\Sources\\Development\\Controls\\Navigation\\TreeView\\RadTreeViewItem.Events.cs:line 846\r\n at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)\r\n at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)\r\n at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)\r\n at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)\r\n at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)\r\n at System.Windows.UIElement.CrackMouseButtonEventAndReRaiseEvent(DependencyObject sender, MouseButtonEventArgs e)\r\n at System.Windows.UIElement.OnMouseDownThunk(Object sender, MouseButtonEventArgs e)\r\n at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)\r\n at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)\r\n at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)\r\n at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)\r\n at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)\r\n at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)\r\n at System.Windows.Input.InputManager.ProcessStagingArea()\r\n at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)\r\n at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)\r\n at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)\r\n at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)\r\n at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)\r\n at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)\r\n at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)\r\n at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)\r\n at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)"

If you need more info I can show you the dissasembly. Thanks in advance.

TreeView

answered on 05 Oct 2009

4 answers

224 views

Changing the column header at runtime

I have a WPF page with a RadGridView, and i want to change the column headers of this grid at runtime beacuse my application is bilingual, i tiried the following code but the headers dose not changed.

<

telerik:RadGridView Name="gvEmployees" Margin="2" telerik:StyleManager.Theme="Office_Blue" AutoGenerateColumns="False" HorizontalAlignment="Stretch" ColumnsWidthMode="Fill" ShowGroupPanel="False" IsReadOnly="True">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberPath="Employee_NO" Header="Employee NO."/>

<telerik:GridViewDataColumn DataMemberPath ="National_ID" Header="National ID"/>

<telerik:GridViewDataColumn DataMemberPath="Full_Name_Ar" Header="Name Ar"/>

<telerik:GridViewDataColumn DataMemberPath="Full_Name_En" Header="Name En"/>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

Private Sub gvEmployees_DataLoaded(ByVal sender As Object, ByVal e As System.EventArgs) Handles gvEmployees.DataLoaded

gvEmployees.Columns(0).Header =

"Test Change"

End Sub

GridView

answered on 05 Oct 2009

3 answers

47 views

Testpartner is unable to identify Telerik Tree view items.

We are using Telerik Tree control in our project. We are doing Automation by Testpartner Tool. Testpartner doesn't support directly to recognize Telerik Tree control. So we are using Telerik Tree view reference in Testpartner tool for accessing/fetching data from Tree view. By late binding unable to get tree items.
Need your suggestions forTestpartner to identify Telerik Tree view items.

TreeView

answered on 05 Oct 2009

1 answer

112 views

drag/drop crash, maybe a DragAndDropManager bug?

Hi

I think I found a bug involving drag/drop on the radscheduler.
The synopsis is with RadPanel and RadScheduler. I drag an item from the panel and drop it on the scheduler and build an Appointment
It's working fine in general.

But if I slowly move the drag cue on an existing Appointment, immediatly when the cursor moves on the text displayed, the DragAndDropManager crashes. It works fine if I don't display Appointment.Subject.

I was able to solve the issue by creating an appointment template like this:

</Border>

</DataTemplate>

But I can't see any reason this solves the problem.
Please find bellow the crash report provided par VS if it may help.

My system is .NET 3.5, Windows XP Pro French.
---------------------------------

System.NullReferenceException was unhandled by user code
Message="La référence d'objet n'est pas définie à une instance d'un objet."
Source="Telerik.Windows.Controls"
StackTrace:
       à Telerik.Windows.Controls.DragDrop.RadDragAndDropManager.<FindDropZones>b__2(HitTestResult el) dans c:\Builds\WPF_Scrum\Core_WPF_2009_Q2_SP1\Sources\Development\Core\Controls\DragDrop\RadDragAndDropManager.cs:ligne 1148
       à System.Windows.Media.Visual.HitTestPointInternal(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters hitTestParameters)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
       à System.Windows.Media.Visual.HitTest(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, HitTestParameters hitTestParameters)
InnerException:

DragAndDrop

answered on 05 Oct 2009