Hello,

I have a WPF project where I am using RadDocking with 3 RadPaneGroups. I get an Index out of range error when I pin and then try to unpin a pane or if I try to pin a second item. I am able to set the pane to floatable/dockable and manipulate them that way, but when I try to unpin I get the error. I'd like to note we are targeting framework .Net Core 3.1.

Error Message:

System.ArgumentOutOfRangeException: 'Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')'

This exception was originally thrown at this call stack:
System.ThrowHelper.ThrowArgumentOutOfRange_IndexException()
Telerik.Windows.Controls.RadTabControl.RaiseIsSelectedChangedAutomationEvent(System.Windows.DependencyObject, bool)
Telerik.Windows.Controls.RadTabItem.OnIsSelectedChanged(bool, bool)
Telerik.Windows.Controls.RadTabItem.OnIsSelectedPropertyChanged(System.Windows.DependencyObject, System.Windows.DependencyPropertyChangedEventArgs)
System.Windows.DependencyObject.OnPropertyChanged(System.Windows.DependencyPropertyChangedEventArgs)
System.Windows.FrameworkElement.OnPropertyChanged(System.Windows.DependencyPropertyChangedEventArgs)
System.Windows.DependencyObject.NotifyPropertyChange(System.Windows.DependencyPropertyChangedEventArgs)
System.Windows.DependencyObject.UpdateEffectiveValue(System.Windows.EntryIndex, System.Windows.DependencyProperty, System.Windows.PropertyMetadata, System.Windows.EffectiveValueEntry, ref System.Windows.EffectiveValueEntry, bool, bool, System.Windows.OperationType)
System.Windows.DependencyObject.SetValueCommon(System.Windows.DependencyProperty, object, System.Windows.PropertyMetadata, bool, bool, System.Windows.OperationType, bool)
    ...
    [Call Stack Truncated]

Here is my XAML:

Hi all!

I have an event which triggers an async loading task in which I change data which is bound to the RadCalendar.

In my development environment I never had any issues but users on RDS-Server have. This is the stack-trace from there log: 

ERROR2020-01-20 11:25:28 – Fatal Error - StackTrace: ModuleContainerManager - HandleUnhandledException

WeakReferenceList`1 - IndexOf

WeakReferenceList`1 - Remove

SelectionChanger`1 - Select

SelectionChanger`1 - InsertItem

Collection`1 - Add

SelectionChanger`1 - AddJustThis

RadCalendar - AddToSelection

RadCalendar - OnSelectedDateChanged

RadCalendar - OnSelectedDateChanged

DependencyObject - OnPropertyChanged

FrameworkElement - OnPropertyChanged

DependencyObject - NotifyPropertyChange

DependencyObject - UpdateEffectiveValue

DependencyObject - InvalidateProperty

BindingExpressionBase - Invalidate

BindingExpression - TransferValue

BindingExpression - ScheduleTransfer

ClrBindingWorker - NewValueAvailable

PropertyPathWorker - UpdateSourceValueState

PropertyPathWorker - OnDependencyPropertyChanged

ClrBindingWorker - OnSourceInvalidation

BindingExpression - HandlePropertyInvalidation

BindingExpressionBase - OnPropertyInvalidation

BindingExpression - OnPropertyInvalidation

DependentList - InvalidateDependents

DependencyObject - NotifyPropertyChange

DependencyObject - UpdateEffectiveValue

DependencyObject - SetValueCommon

DependencyObject - SetCurrentValue

RadDateTimePicker - OnSelectedValueChanged

RadDateTimePicker - OnSelectedValueChanged

DependencyObject - OnPropertyChanged

FrameworkElement - OnPropertyChanged

DependencyObject - NotifyPropertyChange

DependencyObject - UpdateEffectiveValue

DependencyObject - InvalidateProperty

BindingExpressionBase - Invalidate

BindingExpression - TransferValue

BindingExpression - ScheduleTransfer

ClrBindingWorker - NewValueAvailable

PropertyPathWorker - UpdateSourceValueState

PropertyPathWorker - RefreshValue

ClrBindingWorker - ScheduleTransferOperation

DataBindOperation - Invoke

DataBindEngine - ProcessCrossThreadRequests

ExceptionWrapper - InternalRealCall

ExceptionWrapper - TryCatchWhen

DispatcherOperation - InvokeImpl

DispatcherOperation - InvokeInSecurityContext

CulturePreservingExecutionContext - CallbackWrapper

ExecutionContext - RunInternal

ExecutionContext - Run

ExecutionContext - Run

CulturePreservingExecutionContext - Run

DispatcherOperation - Invoke

Dispatcher - ProcessQueue

Dispatcher - WndProcHook

HwndWrapper - WndProc

HwndSubclass - DispatcherCallbackOperation

ExceptionWrapper - InternalRealCall

ExceptionWrapper - TryCatchWhen

Dispatcher - LegacyInvokeImpl

HwndSubclass - SubclassWndProc

nsafeNativeMethods - DispatchMessage

Dispatcher - PushFrameImpl

Dispatcher - PushFrame

Application - RunDispatcher

Application - RunInternal

Application - Run

Application - Run

App - Main

Do I have to take care some how of the binding or how can I catch this to prevent app crash?

Thanks for help!!!!!!

BR Gert

Hello!

I have ran into one unwanted behavior of RadScheduleView. I have a RadScheduleView on my view form, horizontal TimeRuler and vertical grouped recources like a rows. When I move mouse cursor below last resource row I get the slot above mouse cursor selected. Is there a way to allow only select slots when mouse cursor directrly over the slot.

Hi there,

When I try to add help content to MS Help Viewer 2.3 I get a error message:  For security reason DTD is prohibited in this XML document...

For full detail see attached screenshot. 

And my question is what can I do on my side to add WPF Help File content to my help viewer?

I created a custom splashscreen usercontrol with a custom viewmodel (as explained in the docs) but when i try to update the values on the viewmodel only the original values are shown and the new values are ignored? how is this possible?

If i used the standard splashscreen it works

Hi,

I'm just beginning with the syntax editor, so am using a simple test project with nothing but a RadSyntaxEditor in a MainWindow.

I am using the separate NuGet packages (version 2020.1.115) with implicit styles (Fluent theme).

What I find is that even with nothing else, I get an error from my App.xaml file saying "Cannot find resource named 'DragVisualStyle'. Resource names are case sensitive." This doesn't seem to prevent the project from building and running, but still it is an error that shows in the error list and I seem to be unable to get rid of it.

After a small amount of investigation, it does seem that the resource dictionary for the SyntaxEditor (at least for the Fluent theme, but maybe others) is referencing the DragVisualStyle without defining it. Looking at some of the other controls it seems that they do each redefine that style if they need it, so the SyntaxEditor seems to differ in that respect.

I wanted to attach a simple example solution, but can't attach .zip files, so basically reproducing this amounts to creating a new WPF project, adding PackageReferences to the SyntaxEditor and Fluent theme NuGet packages, then merging the following in App.xaml:

    <ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.xaml" />
    <ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/System.Windows.xaml" />
    <ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.Input.xaml" />
    <ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.SyntaxEditor.xaml" />

And having the following in MainWindow.xaml:

    <telerik:RadSyntaxEditor/>

Thanks

I have an issue with grid selection.

If I have, for example, 10 items and i select item 7 it is correctly selected.

I then click the filter box and enter a filter which doesn't include item 7 and press enter the correctly filtered items are shown. If i click the clear filter button I would like the originally selected item 7 to be still selected (and in view) but this seems hit and miss. Sometimes it is but sometimes it could be one of the filtered items. 

Is this desired behaviour or am I missing something?

Thank you

R

We upgraded our NOXAML libraries to the latest S3 version (october 2019), from S2.

Since then, all telerik controls in the project give a similar error when the visual studio XAML designer is loaded...

'Control' not found in xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

'Control' an be any telerik Control type, like radcombobox or radgridview etc.

This occurs, where the control is defined inside the XAML like: <telerik:RadComboBox>...</telerik:RadComboBox>

as well as when we define a style like so...

<Style targettype="telerik:RadComboBox" BasedOn={StaticResource RadComboBoxStyle>..</Style>

As a solution we downgraded to the S3 version again because our project would produce over 300 of these errors, making the project difficult to manage.

As a note... The application does run like normal and the error disappear whilst Debugging.

Hello,I am using the ScheduleView control to build a program.

There is five appointments in 1.png.I want one appointment in a line alone like steps, it will be five lines

How can I achieve that?