The following distribution changes will be announced as of 2025 Q2:

• CHM and Help3 offline documentation resources will be discontinued. The Telerik UI for WinForms offline documentation will be available to download as a PDF file from your Telerik account: Download Product Files
• Classes inside the Telerik.WinControls.Zip and Telerik.WinForms.Spreadsheet.Zip namespaces will be removed from the Telerik.WinControls and Telerik.WinControls.RadSpreadsheet assemblies. Please transition to System.IO.Compression or Telerik Document Processing libraries for continued Zip functionality.
• .NET 6 distribution will be discontinued, following Microsoft's End of Support Policy for .NET 6.

My users want a UI that looks like the screen capture below. They want to be able to drag squares from the top frame to the bottom (mutually exclusive) and reorder them within the bottom frame and then save/restore between editing sessions. Do you have a control designed for this?

Thanks

Carl

I've just published all my .Net 9 apps using ClickOnce, all of them are now broken !

Using the following Nuget : UI.for.WinForms.AllControls.Net90 version 2025.1.211

They all crash on startup with the following error :

Application: MyApp.exe
CoreCLR Version: 9.0.225.6610
.NET Version: 9.0.2
Description: The process was terminated due to an unhandled exception.
Exception Info: System.IO.FileNotFoundException: Could not load file or assembly 'UIAutomationProvider, Version=9.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Le fichier spécifié est introuvable.
File name: 'UIAutomationProvider, Version=9.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
   at Telerik.WinControls.UI.RadToggleSwitchElement.OnValueChanged()
   at Telerik.WinControls.UI.RadToggleSwitchElement.set_Value(Boolean value)
   at Telerik.WinControls.UI.RadToggleSwitchElement.InitializeFields()
   at Telerik.WinControls.RadElement..ctor()
   at Telerik.WinControls.VisualElement..ctor()
   at Telerik.WinControls.RadComponentElement..ctor()
   at Telerik.WinControls.RadItem..ctor()
   at Telerik.WinControls.UI.UIItemBase..ctor()
   at Telerik.WinControls.UI.LightVisualElement..ctor()
   at Telerik.WinControls.UI.RadToggleSwitchElement..ctor()
   at Telerik.WinControls.UI.RadRibbonBarElement.CreateButtons()
   at Telerik.WinControls.UI.RadRibbonBarElement.CreateChildElements()
   at Telerik.WinControls.RadElement.CallCreateChildElements()
   at Telerik.WinControls.RadElement.Construct()
   at Telerik.WinControls.RadElement..ctor()
   at Telerik.WinControls.VisualElement..ctor()
   at Telerik.WinControls.RadComponentElement..ctor()
   at Telerik.WinControls.RadItem..ctor()
   at Telerik.WinControls.UI.UIItemBase..ctor()
   at Telerik.WinControls.UI.LightVisualElement..ctor()
   at Telerik.WinControls.UI.RadRibbonBarElement..ctor()
   at Telerik.WinControls.UI.RadRibbonBar.CreateRibbonBarElement()
   at Telerik.WinControls.UI.RadRibbonBar.CreateChildItems(RadElement parent)
   at Telerik.WinControls.RadControl.Telerik.WinControls.IComponentTreeHandler.CreateChildItems(RadElement parent)
   at Telerik.WinControls.RadElementTree.InitializeRootElement()
   at Telerik.WinControls.RadControl.Construct()
   at Telerik.WinControls.RadControl..ctor()
   at Telerik.WinControls.RadNonClientUIControl..ctor()
   at Telerik.WinControls.UI.RadRibbonBar..ctor()
   at App.MainForm.InitializeComponent()
   at App.MainForm..ctor(IServiceProvider provider)
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
   at System.Reflection.MethodBaseInvoker.InvokeDirectByRefWithFewArgs(Object obj, Span`1 copyOfArgs, BindingFlags invokeAttr)
   at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitDisposeCache(ServiceCallSite transientCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass2_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(ServiceIdentifier serviceIdentifier, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at App.Program.Main()

Hello,  

I'd like the number of characters in the form title to be reduced when I reduce my form.

example with eclipse: (Width form: 1000)

projet_xxxxx - c:/mon_projet/srv/fichier/caracteristique/grid/form_caraterisque.cls - Progress Developper Studio

and after reduction of Form (width form 700)

projet_xxxxx - c:/mon_projet/srv/fichier/caracteristique/grid/form_caraterisque.cls - Progress ...

the title and ...

best regard.

I have a grid with 60,000 records and I have the filter line at the top of the grid. When a user writes to the filter line, it takes a few minutes for the grid to be filtered.

Telerik version is 2021.2.511.40.

Are there any performance improvements in newer versions? Is there a guarantee that if we update the Telerik version this problem will be resolved?

I have this code, and I just want to export all pages or a specific page from the loaded PDF in the RadPdfViewer, without saving the file to the computer.

The function RadPdfViewer.ExportPage returns a Bitmap, but when I assign the result of this function to a new variable of type Bitmap, an error occurs.

'1º Option - Work
            For i As Integer = 1 To RadPdfViewer1.Document.Pages.Count
                Dim guid As Guid = Guid.NewGuid

                RadPdfViewer1.ExportPage(i, "C:\temp\" & guid.ToString() & ".pdf", 1, True, ImageFormat.Png)

                Dim bitmap As Bitmap = New Bitmap("C:\temp\" & guid.ToString() & ".pdf")

                Dim reader As BarcodeReader = New BarcodeReader With {
                        .AutoRotate = True,
                        .TryInverted = True
                        }

                Dim result As Result = reader.Decode(bitmap)

                If result Is Nothing Then Continue For

                Dim decoded As String = result.ToString().Trim()

                If decoded Is Nothing Then Continue For

                If decoded <> TextBox1.Text Then TextBox1.Text = TextBox1.Text & vbNewLine & vbNewLine & decoded

                bitmap.Dispose()
                My.Computer.FileSystem.DeleteFile("C:\temp\" & guid.ToString() & ".pdf")
            Next

            '2 Option - Dont Work
            Dim bitmap As Bitmap = RadPdfViewer1.ExportPage(1, 1, False, ImageFormat.Png)

            '3º Option - Dont Work
            For Each bitmap As Bitmap In RadPdfViewer1.ExportPages(1, False, ImageFormat.Bmp)
                Dim reader As BarcodeReader = New BarcodeReader With {
                        .AutoRotate = True,
                        .TryInverted = True
                        }

                Dim result As Result = reader.Decode(bitmap)

                If result Is Nothing Then Continue For

                Dim decoded As String = result.ToString().Trim()

                If decoded Is Nothing Then Continue For

                If decoded <> TextBox1.Text Then TextBox1.Text = TextBox1.Text & vbNewLine & vbNewLine & decoded
            Next

Hello,

I've benn experiencing extreme slowness in my ERP application. Not just when logging in but in any form window.

This only happens when the application is running on windows 11 from an application shortcut located on a remote server.  (The problem occurs on both desktop and notebook)

However, when running the same scenario on Windows 10, this slowdown does not occur.

Has anyone faced this problem with Windows 11 ?

Attached system configuration.

Thank You

obs: Running locally on both windows 11 and 10 there is no slowdown.

Hi,

I have just updated to the latest version of UI WinForms, and can no longer compiler. RbgColor and RbgColors can no longer be used and ZipArchive.Read no longer exists.

No issues were reported when upgrading my application.

Have I done something wrong?

Kind regards

Toby

Hello,

Visual Studio 2022 is still crashing in some situations like form renaming, saving assembly information or refactoring. In revision notes for main Telerik extensions, I can see some crashes were fixed in 2024.3.808 version. But it's still crashing, but in WinForms Converter extension, last version is 2024.3.805, and I don't see any update. I have disabled that extension for now, I am not using it, so it's not a problem for me. Will you update also this extension?