Provide an AI assistant for code generation with the Telerik UI for WinForms controls.
Steps to reproduce:
1. Bind the grid to BindingList
2. Call BestFitColumns method in form's constructor
3. Use Fluent/Crystal theme
4. Rebind the grid by setting DataSource=null
5. Exception is thrown
Stack trace:
en Telerik.WinControls.UI.BestFitHelper.SetColumnWidth(GridViewColumn column, Single desiredWidth) en Telerik.WinControls.UI.BestFitHelper.BestFitColumnCore(GridViewColumn column, BestFitColumnMode mode) en Telerik.WinControls.UI.BestFitHelper.ProcessRequests() en Telerik.WinControls.UI.GridTableElement.UpdateAll() en Telerik.WinControls.UI.GridTableElement.UpdateViewCore(Object sender, DataViewChangedEventArgs args) en Telerik.WinControls.UI.GridTableElement.UpdateView(Object sender, DataViewChangedEventArgs args) en Telerik.WinControls.UI.GridTableElement.ProcessTemplateEvent(GridViewEvent eventData) en Telerik.WinControls.UI.GridTableElement.Telerik.WinControls.UI.IGridViewEventListener.ProcessEvent(GridViewEvent eventData) en Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessCollection(GridViewEvent gridEvent, PriorityWeakReferenceList list, GridEventProcessMode processMode) en Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessEvent(GridViewEvent gridEvent) en Telerik.WinControls.UI.GridViewSynchronizationService.NotifyListeners(GridViewEvent gridEvent) en Telerik.WinControls.UI.GridViewSynchronizationService.FlushEvents() en Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(GridViewEvent gridEvent) en Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(GridViewTemplate template, GridViewEvent eventData, Boolean postUI) en Telerik.WinControls.UI.GridViewTemplate.DispatchEvent(GridViewEvent gridEvent, Boolean postUI) en Telerik.WinControls.UI.GridViewTemplate.DispatchDataViewChangedEvent(Object sender, DataViewChangedEventArgs args) en Telerik.WinControls.UI.GridViewTemplate.OnViewChanged(Object sender, DataViewChangedEventArgs e) en Telerik.WinControls.UI.MasterGridViewTemplate.OnViewChanged(Object sender, DataViewChangedEventArgs e) en Telerik.WinControls.UI.GridViewTemplate.CollectionView_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e) en Telerik.WinControls.Data.RadCollectionView`1.OnCollectionChanged(NotifyCollectionChangedEventArgs args) en Telerik.WinControls.Data.RadDataView`1.RebuildData(Boolean notify) en Telerik.WinControls.Data.RadDataView`1.RefreshOverride() en Telerik.WinControls.Data.RadDataView`1.ProcessCollectionChanged(NotifyCollectionChangedEventArgs args) en Telerik.WinControls.Data.RadCollectionView`1.source_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e) en Telerik.WinControls.Data.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e) en Telerik.WinControls.Data.RadListSource`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e) en Telerik.WinControls.Data.RadListSource`1.EndUpdate(Boolean notifyUpdates) en Telerik.WinControls.Data.RadListSource`1.Initialize() en Telerik.WinControls.Data.RadListSource`1.Bind(Object dataSource, String dataMember) en Telerik.WinControls.Data.RadListSource`1.set_DataSource(Object value) en Telerik.WinControls.UI.GridViewTemplate.set_DataSource(Object value) en Telerik.WinControls.UI.RadGridView.set_DataSource(Object value)
The Anchor and Dock property is not relevant to the RadPopupContainer and should not be taken into account while calculating the size of the popup drop-down.
Workaround:
Avoid setting the Anchor and Dock properties of the RadPopupContainer.
When changing the theme through ThemeResolutionService.ApplicationThemeName all the application gets changed. Except the ForeColor of the RadRichTextEditor does not get change. Hence the box displays black text on a dark background. Quite unreadable.
Assigning the theme directly in the designer makes everything renders ok.
Sample application attached.
Regrads,
Matthias
Using specifically Win11 Compact DARK theme has additional space compared to the Win11 Compact LIGHT theme. See the pictures.
- On Light theme there are 4 pixels between the form border and the top border of a tab.
- On Dark theme there are 12 pixels between the form border and the top border of a tab.
In my opinion the dark theme has a wrong height here and the light theme is correct, especially compared to other themes, even Office 2019 for example.
Light theme:
Dark theme:
Overview
A bug found in the Telerik PictureBox control for Windows Forms. The issue specifically affects the rendering of SVG graphics, where the text element is being duplicated by the viewer.
Affected Component
- Product: Telerik UI for WinForms
- Control: `RadPictureBox'
- Version: 2025.02
- Platform: Windows Forms (.NET Framework)
Steps to Reproduce
1. Run the application from provided MCVE
2. Observe the text in SVG preview: the text is duplicated twice
3. Zoom in the view
4. Observe the text in SVG preview: there are many instances of the same text
Expected Behavior
The Telerik PictureBox should render only a single instance of the text from SVG file.
Actual Behavior
PictureBox shows many instances of the same text and the specifix number of them depends on the zoom level.
Sample Files
- ✅ `example.svg`: A SVG file that renders correctly in Microsoft Edge.
- ✅ `browser.png`: Screenshot of how the SVG file looks in Microsoft Edge.
- ✅ `browser_after_zoom.png`: Screenshot of how the SVG file looks in Microsoft Edge after 150% zoom.
- ❌ `telerik.png`: Screenshot of how the same file looks in the Telerik PictureBox.
- ❌ `telerik_after_zoom.png`: Screenshot of how the same file looks in the Telerik PictureBox after zooming in.
Environment
| Component | Version |
|----------------|--------------------|
| Telerik UI | 2025.2.520.48 |
| .NET Framework | .NET Framework 4.8 |
| OS | Windows 11 |
