Questions on UI for WPF Forum

6 answers

192 views

I am facing a wierd problem which is showing up also on online WPF sample. I am using following code to populate hierarchy from same table. The grid shows child rows under the parent row and also as another parent row which is causing confusion. I do not want to show the records as parent rows if they have ParentTaskID property set.

<telerik:RadGridView.ChildTableDefinitions>

<telerik:GridViewTableDefinition>

<telerik:GridViewTableDefinition.Relation >

<telerik:TableRelation IsSelfReference="True" >

<telerik:TableRelation.FieldNames>

<telerik:FieldDescriptorNamePair

ParentFieldDescriptorName="TaskId"

ChildFieldDescriptorName="ParentTaskId" />

</telerik:TableRelation.FieldNames>

</telerik:TableRelation>

</telerik:GridViewTableDefinition.Relation>

</telerik:GridViewTableDefinition>

</telerik:RadGridView.ChildTableDefinitions>

GridView

answered on 02 Aug 2010

1 answer

119 views

NullReferenceException

RadTreeListView is blowing up my extremely simple app right after I expand a collapsed node... Come on Telerik - you're QA has been pretty #!$$ poor this release. I've tried using your stuff at work and at home (separate licenses) and there are show-stopper bugs in both projects, different controls (RadTileView at work...ticket submitted, and now RadTreeListView at home) and yes I've tried the latest internal builds. No Joy. This is frustrating. I'm probably dumping telerik for my home projects when my support contract expires in September. My current client has purchased 7 licenses in the past week on my recommendations. This doesn't make me look good.

Object reference not set to an instance of an object. at Telerik.Windows.Controls.GridView.Automation.GridViewVirtualizingPanelAutomationPeer.GetChildrenCore() in c:\Builds\WPF_Scrum\Release_WPF_2010_Q2\Sources\Development\Controls\GridView\GridView\GridView\Automation\GridViewVirtualizingPanelAutomationPeer.cs:line 79

at System.Windows.Automation.Peers.AutomationPeer.EnsureChildren()

at System.Windows.Automation.Peers.AutomationPeer.GetChildren()

at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)

at System.Windows.Automation.Peers.AutomationPeer.ValidateConnected(AutomationPeer connectedPeer)

at System.Windows.Automation.Peers.AutomationPeer.AutomationPeerFromInputElement(IInputElement focusedElement)

at System.Windows.Automation.Peers.AutomationPeer.RaiseFocusChangedEventHelper(IInputElement newFocus)

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.UIElement.Focus()

at System.Windows.Controls.Primitives.ButtonBase.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)

at System.Windows.Threading.Dispatcher.InvokeImpl(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 ADD2Do.WPFClient.App.Main() in C:\sandbox\ADD2Do\trunk\ADD2Do.WPFClient\obj\x86\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.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)

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

at System.Threading.ThreadHelper.ThreadStart()

TreeListView

answered on 02 Aug 2010

2 answers

88 views

Auto closing rows

Hello,
I need help with auto close for rows. When we close an expanded row, all its child expanded rows should close too, so when we expand this row again no child rows are expanded. I tried Row.IsVisibleChanged and it works fine, but that doesn't suite us, cause our application uses several tabs, so when we go to another tab, all rows becom invisible and close.

GridView

answered on 02 Aug 2010

1 answer

97 views

Dynamic GridViewRowDetails

Hello,
On my gridview I have it check when a row is selected for a specific value in a column. It then changes the Row Detail View template based on the value. I know you can do a bind on the detail view user control in xmal. However is there a way to get the object that was selected in the grid view to the user control so I can load sub data in code?

GridView

answered on 30 Jul 2010

5 answers

312 views

IsExpanded

Hello,
When the data is loaded the DataLoaded event occeres, there we get the grid's Items.count and if Items.Count == 0 we need to expand the only row the grid holds.

GridView

answered on 30 Jul 2010

5 answers

149 views

How to use BingRouteProvider

Hello everyone,

I would like to know if someone could explain to me how to use the BingRoutProvider class, in order to display a route between to points on a RadMap object?

Thanks a lot.

Map

answered on 30 Jul 2010

3 answers

142 views

Stop Code Execution with Pop-up

Is it possible to have the RadWindow alerts function like the default MessageBox in that they halt code execution until the user makes a selection. The onClose callback works but ends up needlessly complex code, especially if you need to prompt the user conditionally or multiple times.

Window

answered on 30 Jul 2010

6 answers

208 views

Just one Page

Is it possible to use radbook to render just 1 page instead of left and right ?

Book

answered on 30 Jul 2010

18 answers

465 views

Designer Exception

Hello-

I'm getting the following exception in the Visual Studio designer in both XAML and Design views:

IOException was thrown on 'RadProgressBar': Set property 'System.Windows.ResourceDictionary.Source' threw an exception.

Cannot locate resource 'themes/generictransparent.xaml'.

at MS.Internal.AppModel.ResourcePart.GetStreamCore(FileMode mode, FileAccess access) at System.IO.Packaging.PackagePart.GetStream(FileMode mode, FileAccess access) at System.IO.Packaging.PackWebResponse.CachedResponse.GetResponseStream() at System.IO.Packaging.PackWebResponse.GetResponseStream() at System.IO.Packaging.PackWebResponse.get_ContentType() at MS.Internal.WpfWebRequestHelper.GetContentType(WebResponse response) at MS.Internal.WpfWebRequestHelper.GetResponseStream(WebRequest request, ContentType& contentType) at System.Windows.ResourceDictionary.set_Source(Uri value) at System.Windows.Baml2006.WpfSharedBamlSchemaContext.<Create_BamlProperty_ResourceDictionary_Source>b__1c4(Object target, Object value) at System.Windows.Baml2006.WpfKnownMemberInvoker.SetValue(Object instance, Object value) at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(XamlMember member, Object obj, Object value) at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)

This also occurs with other Telerik controls.

The code compiles and runs fine but the error appears at design-time only.

General Discussions

answered on 30 Jul 2010

3 answers

157 views

Transition between Forms

Hi,
Good Afternoon. I am trying to use the Transition Control to implement a transition between forms with a simple Slide and zoom transition. I might use a button on the mainpage, so the onclick of the button will move from form to form. Do you guys have a simple example of that sort? Please let me know.

Thanks

TransitionControl

answered on 30 Jul 2010