When you place items in the gallery there are scenarios where the tooltip of the scroll up/down buttons is not correct.

Available in LIB version: 2014.3.1402

Issues:

In some themes, when the element (both TextBox and PasswordBox) is focused, the hover does not appear anymore 

Those two issue should be resolved:

1. Different left padding in all themes (WPF)

2. Different height in all themes (WPF)

To whom it may concern,

In our MVVM-project, we are using a derived implementation of the RadRibbonWindow to add some customized functions, for example to add EventHandlers firing when something changed in the view, for example language or culture setting changes from another window. With the EventToCommandBehavior binding, we would like to pass the fired custom event to our view model to execute an async command. Although the event is not shown for autocompletion, everything works fine during runtime, and the command is executed when the event was fired. Unfortunately, the VisualStudio XAML designer cannot bind the custom event handler for the EventToCommand Behavior tag and therefore shows an exception within the XAML code, and within the XAML designer. Because of that binding problem, we are unable to further use the designer to get a preview of our designed windows.

We tried to derive our window from the basic WPF window (System.Windows.Window) and simply add the custom event handler but it did not work, either. Is there any problem with our implementation, or with the EventToCommandBehavior leading to an exception during design time? I have attached a minimal working example. In the code, I have derived a customized window class from the basic WPF window (shows the same error as the RadRibbonWindow), and have added a new event handler. This window is used as main window and fires the custom event when the event OnContentRendered function is called. The view binds this event within XAML to a command of the view model. The command is implemented with our customized asynchronous command. The XAML designer throws the described exception (as shown in the provided picture) but when I debug the program, a break point set within the function called by the command is hit.

I have removed the package "Telerik.Windows.Controls.for.Wpf.Xaml.2021.3.1109" within the .zip-folder because the code would have exceeded the maximum file size.

Sincerely,

Matthias Jörg

Setup: In a WPF Windows Desktop application project, use a RadTabControl with 2 tabs, Tab 1 and Tab 2. Add a RadDocking and some Panes to Tab 1.

Run the application and do:

• Put one RadPane into floating mode
• Go to Tab 2
• Notice how the floating pane is hidden (good)
• In Windows, select Switch User, but when the login screen is shown just re-enter your credentials to get back into your Windows session
• Notice how the floating pane is visible despite the application still showing Tab 2  (not good)
• Move the pane a bit, crash

I've attached a sample project showing the problem, with similar instructions as above. Tested with both 2021.3.1123 and 2022.2.622.

Please advice!

Latest version of wpf ui on NET6 I receive this error with Office2019 theme, also tested with Office2016 theme and there is no error.

System.Windows.Markup.XamlParseException: "Die Angabe eines Werts für "System.Windows.Markup.StaticResourceHolder" führte zu einer Ausnahme."
Exception: Die Ressource mit dem Namen "RepeatButtonStyle" kann nicht gefunden werden. Bei Ressourcennamen wird die Groß- und Kleinschreibung berücksichtigt.

Diese Ausnahme wurde ursprünglich von dieser Aufrufliste ausgelöst:
    System.Windows.StaticResourceExtension.ProvideValueInternal(System.IServiceProvider, bool)
    System.Windows.StaticResourceExtension.ProvideValue(System.IServiceProvider)
    MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(System.Windows.Markup.MarkupExtension, System.IServiceProvider)

I have a RadComboBox which is causing the error. When I remove this element, error is gone. Error only happens when I click on the drowdown. The error happens before dropdown open.

<ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/System.Windows.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.Input.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.Navigation.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.DataVisualization.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.GridView.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.RibbonView.xaml" />

This problem is resolved with lib version 2014.2.721.

I found a memory leak when using RadComboBox inside TabItems that are dynamically added or removed from a TabControl: even if the tab is removed, the TabItem instance stays in memory due to an instance of RadComboBox that is not collected.

If the tab has a DataContext, that may be huge memory parts that cannot be collected!...

Please find enclosed an example of WPF application that helps to reproduce the problem.

To reproduce:

1. Open the Telerik Theme Color Generator application
2. Click the "Disable Controls" checkbox
   • => Observe the controls become disabled
3. Switch to Simplified Ribbon
4. Click the "Disable Controls" checkbox
   • => Observe the controls are not disabled.

Screenshot:

The following exception is thrown when changing the theme of an element with the StyleManager runtime:
Cyclic reference found while evaluating the ThemeStyle property on element 'Telerik.Windows.Controls.Gauge.Needle'.

This only occurs in some themes, such as Fluent, Crystal, and Office2016.

There seems to be a bug concerning tabs headers of TabControl when used with Office2016 theme.

The color of the header changes from white (active tab) to light blue when a control on this tab is hovered. White background is shown only when mouse hovers only over TabControl Tab panel directly. See gif attached.

Issue : Currently the Free Trial / Download page states "Over 120 UI controls" yet the product pages states "over 140".

Obviously "Over 120" is technically correct, however, 140 is more accurate, sounds better & increases consistency across the site.

The same issue also applies to the "UI for WinForms" description and its respective product page.

https://www.telerik.com/download

https://www.telerik.com/products/wpf/overview.aspx

https://www.telerik.com/products/winforms.aspx

When the custom map tiles provider returns the tiles up to the certain zoom level and the user zooms the map to the level above the supported level then the map should use available tiles from previous zoom level, but it show gray patches instead. It occurs when the custom map tiles provider returns null for unavailable tiles.

ArgumentNullException is thrown in the GetNameCore method of the RadGlyphAutomationPeer class. This happens when the Glyph property of RadGlyph is not set and the automation peer for the corresponding element kicks-in.

To work this around, disable the automation peers.

AutomationManager.AutomationMode = AutomationMode.Disabled;

We use a RadTileList as our main navigation component. Today we noticed that our app's memory consumption only ever increases when opening modules and never decreases when closing them. When tracing memory usage with DotMemory (using the Key retention paths feature), I noticed that the retention path to the leaked module viewmodels seems to be rooted in the RadTileList component (see the attached screen shot).

A few implementation details:

- We are wrapping our modules in a class called "OpenedModule" (as you might guess from the attached image)

- The RadTileList is databound to an ObservableCollection<OpenedModule> via its ItemsSource

- We do not use grouping

- Closing a module results in the module's "OpenedModule" instance being removed from the ObservableCollection

This is the xaml we use to instantiate the TileList:

<telerik:RadTileList 
    x:Name="NavigationRadTileList"
    ItemsSource="{Binding OpenedModules, Mode=OneWay}" 
    CanUserSelect="False"
    TilePlaceHolderSide="90"
    behaviors:DisableTileListRightClickBehavior.IsEnabled="True"
    ItemTemplate="{StaticResource NavigationTileListTemplate}">
    <telerik:RadTileList.Resources>
         <Style TargetType="{x:Type telerik:Tile}" BasedOn="{StaticResource NavigationTileStyle}" />
    </telerik:RadTileList.Resources>
</telerik:RadTileList>

Judging by the result from dotMemory, it looks like the TileGroup's children are somehow cached in an ordered list which is not updated when an item is removed?

Best Regards,

Simon Müller

If the total Items count exceed the MaxVisiblePips value,scroll by mousewheel,when scroll to the start or end item,the next scroll item should be the end or start,

the scrollview can not scroll to the selected item. Please see Annexes 1 and 2

When  the MaxVisiblePips value is four,click the right item ,The scroll view cannot be rolled to the center, Please see Annexes 3