Questions on UI for WPF Forum

2 answers

120 views

Problems upgrating to 2009 Q2

Hi,

I am trying to upgrade my project to 2009 Q2.

I removed all the refernces to the previous version 2009 Q1 and removed the toolbar items.
I them added the Q2 binaries but when I compile I get the following error:

Error 3 Unknown build error, 'Cannot resolve dependency to assembly 'System.Windows, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.' CoachTech

What am I doing wrong?

Cheers,
Kevin.

General Discussions

answered on 20 Jul 2009

3 answers

104 views

RadCalendar should disappear on MouseUp, not MouseDown

I have a situation where I have a RadDatePicker situated above another control. I click on the Calendar button to display the Calendar, select a date, and then the MouseUp event is triggered on the control that is under the Calendar. This is because the Calendar disappears on MouseDown rather than MouseUp. Is there a way to work around this issue? If not, can this be considered a feature request?

DatePicker

answered on 20 Jul 2009

4 answers

130 views

Selecting an item in a collapsed group programmatically

Hi,

If I try to select an item programmatically, and that item is in a collapsed group, an IndexOutOfRange exception is thrown. Is there any other way of avoiding this besides expanding all groups?

Thanks in advance!

GridView

answered on 20 Jul 2009

1 answer

236 views

Using the Treeview to show/edit a bulleted list

Would the TreeView be a good control to display and edit a hierarchical bulleted list like what MS Word does?
See picture
http://www.java2s.com/Tutorial/Microsoft-Office-Word-2007Images/Create_Multilevel_Bulleted_Or_Numbered_List___Press_Enter.PNG

From a display side, hiding the treeview lines and adding bullet points to every node should solve it. Is there a way to let editing happen without having to press the F2 key.

Thanks,
Ash

TreeView

answered on 20 Jul 2009

2 answers

48 views

I Think I Broke It

I scraped the RadGridView style in expression blend, and then massaged it so that it had a titlebar that itself contains a toolbar. In order to set the properties for those new elements, I derived a new class from RadGridView and added attached properties. All of this seems to work well.

HOWEVER

When we instantiate the custom class, our existing databinding doesn't work. I'm not aware of anythign I might have done to break this, but at the same time, I don't know exactly how to go about determining what's wrong. I'm in the process of creating a sample project so you can see what I'm doing (in case you need it).

GridView

answered on 17 Jul 2009

1 answer

137 views

Get the selected child row not the parent in a hierarchical grid

I have a RadGridView in a hierarchical view.

Double-clicking on a child row and checking the RadGridViw.SelectedItem I get the parent row. Any idea how I can get the selected child item not the parent?

Thanks,

Mihai.

GridView

answered on 17 Jul 2009

4 answers

377 views

Updating the DataContext of a Row

I need to be able to tell a GridViewRowItem to reload itself from its DataContext, but the functionality doesn't seem to be available in the current release. To work around this, I use this logic:

    
            object context = theRow.DataContext; 
        
            theRow.DataContext = null; 
        
            theRow.DataContext = context;

This works fine for the standard GridViewRowItem. Unfortunately, my grid also has a hierarchy, and so it contains GridViewExpandableRow items as well - I assumed that the same logic would cause the rows to refresh themselves, however it doesn't!

Ideally I just need to be able to tell a row to refresh itself without having to reload the entire grid. The automatic databinding doesn't work perfectly for this, which is why I just need to tell the row to refresh itself.

Any ideas on how I can achieve what I'm attempting here? I'm not sure whether this is a bug within the GridViewExpandableRow.

GridView

answered on 17 Jul 2009

1 answer

128 views

WPF: Drag & Drop GridView to Treeview

Hello,

can i use drag and drop between RadGridview and RadTreeView items?

i have this code:

Dim mPoint As Point = e.GetPosition(TreeViewMedicosServicios)

with it i take the mouse x and y position on the TreeView, i need know the TreeviewItem in this position

Thanks

GridView

answered on 16 Jul 2009

1 answer

159 views

Window Sample crashes when trying to view from samples.

Hi,

I downloaded the Q2 version of WPF Controls and installed the same. When trying to view the samples for window the application crashes. I am attaching the stacktrace. Do let me know how can this be viewed without throwing any error.

---------------------------
Fatal error!
---------------------------
Error message: Value does not fall within the expected range.

StackTrace: at System.StubHelpers.ObjectMarshaler.ConvertToNative(Object objSrc, IntPtr pDstVariant)

at MS.Internal.Automation.UiaCoreProviderApi.RawUiaRaiseAutomationPropertyChangedEvent(IRawElementProviderSimple provider, Int32 id, Object oldValue, Object newValue)

at System.Windows.Automation.Provider.AutomationInteropProvider.RaiseAutomationPropertyChangedEvent(IRawElementProviderSimple element, AutomationPropertyChangedEventArgs e)

at System.Windows.Automation.Peers.AutomationPeer.RaisePropertyChangedEvent(AutomationProperty property, Object oldValue, Object newValue)

at Telerik.Windows.Controls.RadWindow.OnLeftChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) in c:\Builds\WPF_Scrum\Navigation_WPF\Sources\Development\Controls\Navigation\Window\RadWindow.cs:line 1576

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, OperationType operationType)

at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, OperationType operationType, Boolean isInternal)

at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)

at Telerik.Windows.Controls.RadWindowPopup.WindowPopupWindowFactory.WindowPopupWindowImpl.PositionWindow() in c:\Builds\WPF_Scrum\Navigation_WPF\Sources\Development\Controls\Navigation\Window\WindowPopup\WindowPopupWindowImpl.cs:line 201

at Telerik.Windows.Controls.RadWindowPopup.WindowPopupWindowFactory.WindowPopupWindowImpl.OnWindowLoaded(Object sender, EventArgs args) in c:\Builds\WPF_Scrum\Navigation_WPF\Sources\Development\Controls\Navigation\Window\WindowPopup\WindowPopupWindowImpl.cs:line 116

at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)

at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)

at MS.Internal.FrameworkObject.OnLoaded(RoutedEventArgs args)

at System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)

at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root)

at System.Windows.Media.MediaContext.FireLoadedPendingCallbacks()

at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()

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

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

at System.Windows.Media.MediaContext.Resize(ICompositionTarget resizedCompositionTarget)

at System.Windows.Interop.HwndTarget.OnResize()

at System.Windows.Interop.HwndTarget.HandleMessage(Int32 msg, IntPtr wparam, IntPtr lparam)

at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(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)

---------------------------
OK
---------------------------

Regards,

M. Rajesh.

Window

answered on 16 Jul 2009

8 answers

512 views

DateTimePicker: Nullable object must have a value.

I create empty project, add line
<telerik:DateTimePicker />

and when user try to change antyhing exception is thrown: Nullable object must have a value.

DatePicker

answered on 16 Jul 2009