Last Updated: 20 May 2024 14:22 by ADMIN

(this.radPageView1.ViewElement as RadPageViewStripElement).AllowEdit = true;
(this.radPageView1.ViewElement as RadPageViewStripElement).NewItemVisibility = StripViewNewItemVisibility.End;



Last Updated: 20 May 2024 08:44 by Al
 After updating the reference to Telerik 2024.2.514, the theme is lost at design time. 
Last Updated: 17 May 2024 12:30 by ADMIN
Last Updated: 16 May 2024 11:52 by ADMIN



When a RadValidationRule has the "PropertyName" assigned to a non-existent property, the RadVAlidationProvider.ValidateCore throws a NullReference exception because the property cannot be found via reflection and throws no error handling.


From OpenEdge ABL class, this is the code written into the forms InitializeComponent method.  The "IsValid"  property doesn't actually exist.

        radValidationRule3:AddControl(THIS-OBJECT:myTextBox).         radValidationRule3:Operator = Telerik.WinControls.Data.FilterOperator:IsNotEqualTo.         radValidationRule3:PropertyName = "IsValid".         radValidationRule3:ToolTipText = "Test".         radValidationRule3:Value = TRUE.


While we don't expect the functionality to actually work because the property isn't actually available to .NET, but the NullReferenceException is poorly handled.


I've attached a screenshot of the bit of code from RadValidationProvider.ValidateCore where this occurs.  This is from version 2020.3.1020.20

Here is the thrown stack exception details from visual studio.

Message=Object reference not set to an instance of an object.
at Telerik.WinControls.UI.RadValidationProvider.ValidateCore(Object sender, EventArgs e)



Last Updated: 16 May 2024 08:07 by ADMIN
Created by: Nadya
Comments: 0
Category: UI for WinForms
Type: Feature Request
Similar to VisualStudio2022Light theme blending. Provide an easy way to change the palette for the Windows 11 themes. 
Last Updated: 15 May 2024 13:26 by ADMIN
Created by: TestTeam
Comments: 7
Category: Spreadsheet
Type: Bug Report
The behavior can be reproduced when the zoom of the control is changed and we try to enter a value in a cell.
Last Updated: 13 May 2024 11:08 by ADMIN
Scheduled for 2024 Q4 (13.11.2024)
When there is empty folder under "%appdata%\Telerik\Updates" the WinForms Upgrade wizard fails with

System.IO.FileNotFoundException: C:\Users\mstefanov\AppData\Roaming\Telerik\Updates\Telerik_UI_For_WinForms_2022_3_1109_Dev_dlls\BinNetCore\Telerik.WinControls.dll
at System.Diagnostics.FileVersionInfo.GetVersionInfo(String fileName)
at Telerik.VSX.Internal.FileSystem.FileVersionInfoWrap.get_FileVersion()
at Telerik.WinControls.VSX.AssemblyDiscovery.WFCoreFileBasedDistributionSearcher.CheckFolderContainsDistribution(String folderPath)
at Telerik.VSX.DistributionListing.DistributionDiscovery.FileBasedDistributionSearcher.GetPackageDistributions(String packageFolder, Func2 fileBasedDistributionTokenCreator) at Telerik.VSX.DistributionListing.DistributionDiscovery.DistributionSearcher.PopulateFileBasedDistributions(IList1 distributions, IList1 foldersToSearch, Func2 distributionTokenCreator)
at Telerik.VSX.DistributionListing.DistributionDiscovery.DistributionSearcher.GetDistributions()
at Telerik.WinControls.VSX.WFDistributionSearcher.GetDistributions()
at Telerik.VSX.ViewModels.DistributionChooserViewModelBase1.get_AllDistributions() at Telerik.WinControls.VSX.Wizards.ViewModels.WFDistributionChooserUpgradeViewModel.GetDistributions() at Telerik.VSX.ViewModels.DistributionChooserViewModelBase1.get_Distributions()
at Telerik.VSX.ViewModels.DistributionChooserViewModelBase1.get_CurrentDistribution() at Telerik.WinControls.VSX.Wizards.UpgradeProjectWizardBase2.TryGetDistributionToken(Version targetFramework)
at Telerik.WinControls.VSX.Wizards.UpgradeProjectWizardBase`2.TryGetMainLoadInformation(Version targetFramework)
at Telerik.VSX.WizardEngine.Controls.WizardControlBase.PopulateCollectedValues(IPropertyDataDictionary gatheredData)
at Telerik.VSX.WizardFramework.Pages.DynamicPageController.GetData()
at Telerik.WizardFramework.Wizard.GetCurrentPageData()
at Telerik.WizardFramework.Wizard.UpdateNavigation()
at Telerik.WizardEngine.Helpers.EventHelper.CatchExceptionAndSendReport(Action action)
Last Updated: 09 May 2024 10:25 by ADMIN
In this case, the RadGridView is in the Self-Reference hierarchy. When the value of a cell is changed runtime, we are populating the bound (BindingList) collection with new items. All BindingList notifications will be called, however, the internal RadListSource in the RadGridView won't be updated, thus leading to a ArgumentOutOfRangeException.
Last Updated: 08 May 2024 13:46 by ADMIN
In the description of the RowIndent property is mentioned that this will indent groups and hierarchy rows.  However, it can indent group rows only. 
Last Updated: 07 May 2024 12:18 by ADMIN
Created by: Philip
Comments: 2
Category: PdfViewer
Type: Bug Report
Signature fields are not rendered in the PDF while loading it in the RadPdfViewer control.
Last Updated: 04 May 2024 08:38 by erwin
Holding CTRL + C on a cell for a couple of seconds will throw ExternalException. 
Last Updated: 03 May 2024 13:42 by ADMIN

Documentation about High-DPI mechanisms available on the website is very outdated and mostly does not consider the changes and improvements that Microsoft made with .net 7.0 and 8.0.

What's needed is thorough documentation about Telerik's behavior in comparison with the different situations on .net Framework 4.9 and the major .net Versions 6.0, 7.0, and 8.0.

Kind regards


Last Updated: 02 May 2024 12:01 by ADMIN
On HDPI (200%) Print Preview Dialog bottom buttons are cut off.
Last Updated: 01 May 2024 13:47 by ADMIN

In this scenario, the Browsable(false) attribute is set to both properties which are used to create the self-referencing hierarchy. When the columns are predefined, running that application will freeze as the RadGridView could not correctly get the parent row. If the columns are auto-generated, this behavior is not observed. 

This is not exactly a real solution as setting the Browsable(false) attribute will remove the properties from the source. However, the control should not freeze the application.

Last Updated: 01 May 2024 09:57 by ADMIN
In this case, we have 5 MDI children and the last one is active. Closing the first one from the tab close button will activate the second child. Closing a non-active child should not change the active window in MDI scenario.
Last Updated: 29 Apr 2024 14:06 by Pablo
Created by: Pablo
Comments: 0
Category: RadialGauge, LinearGauge, BulletGraph
Type: Feature Request
Provide option to set title for RadRadialGauge.
Last Updated: 29 Apr 2024 13:51 by erwin
In this case, the RadDropDownList is added runtime to a RadPanel. An important part is that the Form is located on a HDPI monitor. When the control is added to the form it steals the focus. This is not observed in 100 % DPI.
Last Updated: 25 Apr 2024 13:11 by Ashley
It appears that this scenario is not handled properly in our exporter. Consider the case where you have two templates that use view definition. 

The view definition from the second template is not exported at all.
Last Updated: 25 Apr 2024 09:37 by ADMIN
Created by: Choon Jet
Comments: 2
Category: ListView
Type: Bug Report

The last row is not detected in the Inspect Tool and in the Accessibility Insights for Windows tool.

Last Updated: 24 Apr 2024 08:22 by ADMIN

Top Level Exception
Type:        System.OverflowException
Message:     Arithmetic operation resulted in an overflow.
Source:      TelerikCommon
Stack Trace: at Telerik.WinControls.NativeMethods.GetMonitorDpi(Screen screen, DpiType dpiType)
   at Telerik.WinControls.VisualElement.GetScaledFont(Single scale, Font fontToScale)
   at Telerik.WinControls.UI.LightVisualElement.CreateTextParams()
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