Hi

I want to change the style of a row when some fiekd is null
here is my code
it doesnt work.

thanks.

Guys,

Will you provide a Q2 '09 beta version?

Best Regards,

Henrique

I've set up a MVVM approach to using the chart control. The first time a chart control displays it loads correctly and displays all of the data correctly. However, as soon as the the data context changes and a new view model is loaded, I get a null reference exception from the chart control. The stack trace does not contain any reference to my code. Below is the stack trace. Any ideas why this might be happening?

at Telerik.Windows.Controls.Charting.BaseAnimationConverter.GetAnimationSettings()
   at Telerik.Windows.Controls.Charting.BaseAnimationConverter.Convert(Object value, Type targetType, Object parameter, CultureInfo culture)
   at Telerik.Windows.Controls.Charting.StaticConverter`2.Convert(Object value, Object parameter, CultureInfo culture)
   at Telerik.Windows.Controls.Charting.StaticConverter`2.Convert(Object value, Object parameter)
   at Telerik.Windows.Controls.Charting.BaseChartItem.ConfigureAnimationSettings()
   at Telerik.Windows.Controls.Charting.BaseChartItem.SetAnimationSettings()
   at Telerik.Windows.Controls.Charting.BaseChartItem.OnApplyTemplate()
   at Telerik.Windows.Controls.Charting.BaseLabelChartItem.OnApplyTemplate()

I'm a beginner  to XBAP development.
The example that comes with Telerik WPF pack it's very cool, and I tryed to read it's source code to understand  better how things work on it. But I miss something: I can't find how that left panel (that allow you to access every example) is created... The main wpf form is just a blank one, and I can't figure how Telerik guys did to make it work (how the secondary forms are loaded... I serched in the source but found nothing).

Anybody can help me?
Thank you all!

I know it's not intuitive, but I have a requirement that I support allowing a combobox column to be populated with items when the drop down event occurs.  So I've exteded the built in combo box editor setting to expose the DropDownOpened event, and when this event occurs the ItemsSource for the combo (an IList<String>) is cleared and then populated with items.  This works for the most part.  What I've noticed is that the first combo box cell to get edited and droped down, that when a selection is made, that the when I move off the cell (commit the edit to the cell) the non-edit value reverts back to the previous value (the value it was orginally bound to).  All other cells for that column (in other rows) work as expected.

Hi - We are using a custom "theme" that is in a separate project that successfully is applied to all controls in the WPF application.

Hello,

I have connected the DefaultView property of a strong-typed datatable to the ItemsSource of the Telerik grid
and most of the data from the grid is not showing in the grid.

When I connect the datatable and not its default view, everything works fine.

This seems to occur when working with a strong-type datatable and not when I create a datatable on the fly.

 

Help will be most appreciated,

 

Erez

Dear Friends,

I have a windows forms application. I hosted the the "RadTreeView" inside a windows form using an "ElementHost" control. if I click on the treeview item I got an "NullReferenceException" in the "RadTreeView_GotFocus" method. By checking the source code of the method we found the problem. 

The "Application.Current" is always null for a WinForms Applicaiton. So an exception throws on the first line of the code. Since It is unhandled It crashed the application.

Is there any workaround or solution to the above problem? I have attched the exception call stack too.

RadTreeView_GotFocus Method Source
-----
private void RadTreeView_GotFocus(object sender, RoutedEventArgs e)
{
    if (Application.Current.MainWindow != null)
    {
        Application.Current.MainWindow.MouseWheel += new MouseWheelEventHandler(this.OnRootVisualMouseWheel);
    }
    if (e.OriginalSource == this)
    {
        if (this.SelectedContainer != null)
        {
            this.SelectedContainer.Focus();
        }
        else
        {
            RadTreeViewItem item = base.ItemContainerGenerator.ContainerFromIndex(0) as RadTreeViewItem;
            if (item != null)
            {
                item.Focus();
            }
        }
    }
    this.IsSelectionActive = true;
}

Steps To reproduce 

1. Create a WinForms Application (Target Framework to .NET 3.5)
1a. Add a reference to these dlls (Telerik.Windows.Controls & Telerik.Windows.Controls.Navigation)
2. Add a WPF UserControl to the project. And add the following XAML.
       <telerik:RadTreeView >
            <telerik:RadTreeViewItem Header="Sony"  >
                <telerik:RadTreeViewItem Header="Vaio"  />
                <telerik:RadTreeViewItem Header="Bravia"  />
            </telerik:RadTreeViewItem>
        </telerik:RadTreeView>
3. Add a "ElementHost" control to the exisiting "Form1 (Windows Form)". 
4. Build the project
5. Set the child property of the ElementHost to an instance of the WPF UserControl we created.
6. Build and Run the application.
7. Click over a treeviewitem. 
8. The application will crash.

Runtime Details
Windows Vista 32 bit Business Edition
VS.NET 2008 Professional With SP1
.NET Framework 3.5 SP1
Telereik Version : 2009.1.424.35 (both Telerik.Windows.Controls & Telerik.Windows.Controls.Navigation)

The exception call stack.
 Telerik.Windows.Controls.Navigation.dll!Telerik.Windows.Controls.RadTreeView.RadTreeView_GotFocus(object sender = {Telerik.Windows.Controls.RadTreeView Items.Count:1}, System.Windows.RoutedEventArgs e = {System.Windows.RoutedEventArgs}) + 0x2a bytes 
  PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs) + 0x78 bytes 
  PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source = {Sony}, System.Windows.RoutedEventArgs args = {System.Windows.RoutedEventArgs}, bool reRaised = false) + 0x1bf bytes 
  PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender = {Sony}, System.Windows.RoutedEventArgs args = {System.Windows.RoutedEventArgs}) + 0x79 bytes 
  PresentationCore.dll!System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs e) + 0x17 bytes 
  PresentationCore.dll!System.Windows.UIElement.OnGotFocus(System.Windows.RoutedEventArgs e) + 0x5 bytes 
  PresentationFramework.dll!System.Windows.FrameworkElement.OnGotFocus(System.Windows.RoutedEventArgs e) + 0x4c bytes 
  PresentationCore.dll!System.Windows.UIElement.IsFocused_Changed(System.Windows.DependencyObject d, System.Windows.DependencyPropertyChangedEventArgs e) + 0xa2 bytes 
  WindowsBase.dll!System.Windows.DependencyObject.OnPropertyChanged(System.Windows.DependencyPropertyChangedEventArgs e) + 0x4a bytes 
  PresentationFramework.dll!System.Windows.FrameworkElement.OnPropertyChanged(System.Windows.DependencyPropertyChangedEventArgs e) + 0x50 bytes 
  WindowsBase.dll!System.Windows.DependencyObject.NotifyPropertyChange(System.Windows.DependencyPropertyChangedEventArgs args) + 0x2c bytes 
  WindowsBase.dll!System.Windows.DependencyObject.UpdateEffectiveValue(System.Windows.EntryIndex entryIndex = {System.Windows.EntryIndex}, System.Windows.DependencyProperty dp = {IsFocused}, System.Windows.PropertyMetadata metadata, System.Windows.EffectiveValueEntry oldEntry, ref System.Windows.EffectiveValueEntry newEntry = {System.Windows.EffectiveValueEntry}, bool coerceWithDeferredReference, System.Windows.OperationType operationType) + 0x515 bytes 
  WindowsBase.dll!System.Windows.DependencyObject.SetValueCommon(System.Windows.DependencyProperty dp, object value, System.Windows.PropertyMetadata metadata, bool coerceWithDeferredReference, System.Windows.OperationType operationType, bool isInternal) + 0x1eb bytes 
  WindowsBase.dll!System.Windows.DependencyObject.SetValue(System.Windows.DependencyPropertyKey key, object value) + 0x39 bytes 
  PresentationCore.dll!System.Windows.Input.FocusManager.OnFocusedElementChanged(System.Windows.DependencyObject d, System.Windows.DependencyPropertyChangedEventArgs e) + 0xf0 bytes 
  WindowsBase.dll!System.Windows.DependencyObject.OnPropertyChanged(System.Windows.DependencyPropertyChangedEventArgs e) + 0x4a bytes 
  PresentationFramework.dll!System.Windows.FrameworkElement.OnPropertyChanged(System.Windows.DependencyPropertyChangedEventArgs e) + 0x50 bytes 
  WindowsBase.dll!System.Windows.DependencyObject.NotifyPropertyChange(System.Windows.DependencyPropertyChangedEventArgs args) + 0x2c bytes 
  WindowsBase.dll!System.Windows.DependencyObject.UpdateEffectiveValue(System.Windows.EntryIndex entryIndex = {System.Windows.EntryIndex}, System.Windows.DependencyProperty dp = {FocusedElement}, System.Windows.PropertyMetadata metadata, System.Windows.EffectiveValueEntry oldEntry, ref System.Windows.EffectiveValueEntry newEntry = {System.Windows.EffectiveValueEntry}, bool coerceWithDeferredReference, System.Windows.OperationType operationType) + 0x515 bytes 
  WindowsBase.dll!System.Windows.DependencyObject.SetValueCommon(System.Windows.DependencyProperty dp, object value, System.Windows.PropertyMetadata metadata, bool coerceWithDeferredReference, System.Windows.OperationType operationType, bool isInternal) + 0x1eb bytes 
  WindowsBase.dll!System.Windows.DependencyObject.SetValue(System.Windows.DependencyProperty dp, object value) + 0x2e bytes 
  PresentationCore.dll!System.Windows.Input.FocusManager.SetFocusedElement(System.Windows.DependencyObject element, System.Windows.IInputElement value) + 0x2f bytes 
  PresentationFramework.dll!System.Windows.Input.KeyboardNavigation.UpdateFocusedElement(System.Windows.DependencyObject focusTarget = {Sony}) + 0x32 bytes 
  PresentationFramework.dll!System.Windows.FrameworkElement.OnGotKeyboardFocus(object sender, System.Windows.Input.KeyboardFocusChangedEventArgs e = {System.Windows.Input.KeyboardFocusChangedEventArgs}) + 0x47 bytes 
  PresentationCore.dll!System.Windows.Input.KeyboardFocusChangedEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget) + 0x34 bytes 
  PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target) + 0x27 bytes 
  PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs) + 0x3e bytes 
  PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source = {Sony}, System.Windows.RoutedEventArgs args = {System.Windows.Input.KeyboardFocusChangedEventArgs}, bool reRaised = false) + 0x1bf bytes 
  PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender = {Sony}, System.Windows.RoutedEventArgs args = {System.Windows.Input.KeyboardFocusChangedEventArgs}) + 0x79 bytes 
  PresentationCore.dll!System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs args = {System.Windows.Input.KeyboardFocusChangedEventArgs}, bool trusted) + 0x35 bytes 
  PresentationCore.dll!System.Windows.Input.InputManager.ProcessStagingArea() + 0x311 bytes 
  PresentationCore.dll!System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs input) + 0x42 bytes 
  PresentationCore.dll!System.Windows.Input.KeyboardDevice.ChangeFocus(System.Windows.DependencyObject focus, int timestamp) + 0x63e bytes 
  PresentationCore.dll!System.Windows.Input.KeyboardDevice.TryChangeFocus(System.Windows.DependencyObject newFocus, System.Windows.Input.IKeyboardInputProvider keyboardInputProvider, bool askOld, bool askNew, bool forceToNullIfFailed) + 0x12b bytes 
  PresentationCore.dll!System.Windows.Input.KeyboardDevice.Focus(System.Windows.DependencyObject focus, bool askOld, bool askNew) + 0xc2 bytes 
  PresentationCore.dll!System.Windows.Input.KeyboardDevice.Focus(System.Windows.IInputElement element) + 0x1a bytes 
  PresentationCore.dll!System.Windows.UIElement.Focus() + 0x1a bytes 
  Telerik.Windows.Controls.Navigation.dll!Telerik.Windows.Controls.RadTreeViewItem.OnHeaderMouseLeftButtonDown(object sender = {System.Windows.Controls.Grid}, System.Windows.Input.MouseButtonEventArgs e = {System.Windows.Input.MouseButtonEventArgs}) + 0x7f bytes 
  PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget) + 0x31 bytes 
  PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target) + 0x27 bytes 
  PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs) + 0x3e bytes 
  PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source = {System.Windows.Controls.Grid}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs}, bool reRaised = true) + 0x1bf bytes 
  PresentationCore.dll!System.Windows.UIElement.ReRaiseEventAs(System.Windows.DependencyObject sender = {System.Windows.Controls.Grid}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs}, System.Windows.RoutedEvent newEvent) + 0x10a bytes 
  PresentationCore.dll!System.Windows.UIElement.CrackMouseButtonEventAndReRaiseEvent(System.Windows.DependencyObject sender, System.Windows.Input.MouseButtonEventArgs e) + 0x2e bytes 
  PresentationCore.dll!System.Windows.UIElement.OnMouseDownThunk(object sender, System.Windows.Input.MouseButtonEventArgs e) + 0xde bytes 
  PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget) + 0x31 bytes 
  PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target) + 0x27 bytes 
  PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs) + 0x3e bytes 
  PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source = {System.Windows.Controls.TextBlock}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs}, bool reRaised = false) + 0x1bf bytes 
  PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender = {System.Windows.Controls.TextBlock}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs}) + 0x79 bytes 
  PresentationCore.dll!System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs}, bool trusted) + 0x35 bytes 
  PresentationCore.dll!System.Windows.Input.InputManager.ProcessStagingArea() + 0x311 bytes 
  PresentationCore.dll!System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs input) + 0x42 bytes 
  PresentationCore.dll!System.Windows.Input.InputProviderSite.ReportInput(System.Windows.Input.InputReport inputReport) + 0x62 bytes 
  PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.ReportInput(System.IntPtr hwnd, System.Windows.Input.InputMode mode, int timestamp, System.Windows.Input.RawMouseActions actions, int x, int y, int wheel) + 0x2e2 bytes 
  PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.FilterMessage(System.IntPtr hwnd = 591552, int msg = 513, System.IntPtr wParam = 1, System.IntPtr lParam = 589869, ref bool handled = false) + 0x4e1 bytes 
  PresentationCore.dll!System.Windows.Interop.HwndSource.InputFilterMessage(System.IntPtr hwnd = 591552, int msg = 513, System.IntPtr wParam = 1, System.IntPtr lParam = 589869, ref bool handled = false) + 0x75 bytes 
  WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd = 591552, int msg = 513, System.IntPtr wParam = 1, System.IntPtr lParam = 589869, ref bool handled = false) + 0xbe bytes 
  WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) + 0x7a bytes 
  WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback = {Method = {System.Object DispatcherCallbackOperation(System.Object)}}, object args = {MS.Win32.HwndSubclass.DispatcherOperationCallbackParameter}, bool isSingleParameter = true) + 0x8a bytes 
  WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source = {System.Windows.Threading.Dispatcher}, System.Delegate callback, object args, bool isSingleParameter, System.Delegate catchHandler = null) + 0x4a bytes 
  WindowsBase.dll!System.Windows.Threading.Dispatcher.WrappedInvoke(System.Delegate callback, object args, bool isSingleParameter, System.Delegate catchHandler) + 0x44 bytes 
  WindowsBase.dll!System.Windows.Threading.Dispatcher.InvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, bool isSingleParameter) + 0x91 bytes 
  WindowsBase.dll!System.Windows.Threading.Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority priority, System.Delegate method, object arg) + 0x40 bytes 
  WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd = 591552, int msg = 513, System.IntPtr wParam = 1, System.IntPtr lParam = 589869) + 0xdc bytes 
  [Native to Managed Transition] 
  [Managed to Native Transition] 
> System.Windows.Forms.dll!System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(int dwComponentID, int reason = -1, int pvLoopData = 0) Line 2106 + 0x8 bytes C#
  System.Windows.Forms.dll!System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(int reason = -1, System.Windows.Forms.ApplicationContext context = {System.Windows.Forms.ApplicationContext}) Line 3377 + 0x1b bytes C#
  System.Windows.Forms.dll!System.Windows.Forms.Application.ThreadContext.RunMessageLoop(int reason, System.Windows.Forms.ApplicationContext context) Line 3261 + 0xa bytes C#
  System.Windows.Forms.dll!System.Windows.Forms.Application.Run(System.Windows.Forms.Form mainForm) Line 1466 C#
  WinAppCS.exe!WinAppCS.Program.Main() Line 18 + 0x1d bytes C#
  [Native to Managed Transition] 
  [Managed to Native Transition] 
  mscorlib.dll!System.AppDomain.ExecuteAssembly(string assemblyFile, System.Security.Policy.Evidence assemblySecurity, string[] args) Line 931 + 0x1f bytes C#
  Microsoft.VisualStudio.HostingProcess.Utilities.dll!Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() + 0x2b bytes 
  mscorlib.dll!System.Threading.ThreadHelper.ThreadStart_Context(object state) Line 61 + 0xffffffe3 bytes C#
  mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) Line 355 + 0xd bytes C#
  mscorlib.dll!System.Threading.ThreadHelper.ThreadStart() Line 88 + 0xffffffe4 bytes C#

Hi
 I want to bind values to my 

GridViewComboBoxColumn

from a DataTable
and I "fly"

this is my code



when I bind the data to the Combo from a 

System.Collections.

IEnumerable

 

it works, but when I use a dataTable it fail...

Thanks

Dear Friends,

We are using the RadTreeView in one of our outlook addin application. The Radtreeview works fine in a WPF application. But in the addin it crashes the outlook when a treeview item is clicked.

If I debug I got the follwing error in VS.NET 2008 Debugger.

"An unhandled exception of type 'System.NullReferenceException' occurred in Unknown Module."

The call stack is,

> kernel32.dll!_RaiseException@16()  + 0x58 bytes 
  mscorwks.dll!RaiseTheExceptionInternalOnly()  + 0x159 bytes 
  mscorwks.dll!RaiseTheException()  + 0x4e bytes 
  mscorwks.dll!RaiseTheException()  + 0xc0 bytes 
  mscorwks.dll!RealCOMPlusThrow()  + 0x30 bytes 
  mscorwks.dll!RealCOMPlusThrow()  + 0xd bytes 
  mscorwks.dll!Thread::RaiseCrossContextException()  + 0x1ff bytes 
  mscorwks.dll!Thread::DoADCallBack()  + 0x13095b bytes 
  mscorwks.dll!_UM2MDoADCallBack@16()  + 0x7c bytes 
  0a25847a() 
  user32.dll!_InternalCallWinProc@20()  + 0x23 bytes 
  user32.dll!_UserCallWinProcCheckWow@32()  + 0xb3 bytes 
  user32.dll!_DispatchMessageWorker@8()  + 0xe6 bytes 
  user32.dll!_DispatchMessageW@4()  + 0xf bytes 
  MSO.DLL!30d11bbe()  
  [Frames below may be incorrect and/or missing, no symbols loaded for MSO.DLL] 
  OUTLLIB.DLL!30053fb2()  
  OUTLOOK.EXE!300012d5()  
  kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
  ntdll.dll!__RtlUserThreadStart@8()  + 0x27 bytes 

There is no managed stack here.
 
Is there anyway to solve the problem?

The sample project contain source code and a setup project. Just install the setup project. The addin comes in the bottom of the left naviagtion pane. Click any one of the trreview item. You can see the outlook crashed.

I have uploaded a sample project that reproduce the erorr in the following location.
http://www.4shared.com/file/112645778/c879187b/XInlook.html

 

Thanks & Regards
Prakash