Hello Telerik team,

After upgrading to Telerik WinForms 2025.Q2, I’ve encountered several issues related to form layout rendering at runtime, which were not present before the update.

Enviroment:

.NET Framework 4.8.1
RadForm (not RadRibbonForm)
DPI awareness set to system in app.manifest
AutoScaleMode = Dpi

Could you please confirm if these layout behaviors are intentional in 2025.2 and whether there is an official workaround or setting to restore the previous behavior?

Thank you!

I have a scenario where we need to manually size and position all of the controls in a certain window.  We need the size/position to be the same regardless of the DPI scaling on the system.  For standard Winforms controls, I can simply set the Window's AutoScaleMode property to 'None'.  That will prevent the controls from auto-scaling as desired.  However, if I have any Telerik controls in the Window, they are always automatically scaled no matter what I set the AutoScaleMode property to.

I know that there is a static RadControl.EnableDpiScaling property that can be used.  If I set that to false, then that will indeed disable auto-scaling for any Telerik controls.  However, that is a global setting.  I do not want to disable auto-scaling across the entire application.  I just need to disable it for a particular window.

Is this possible?

Thanks,

--Darren

Hi 

I am designing a WinForm App using UI for WinForms (ver. 2025 Q1). Is there any solution to add a search box to the radform title bar? It looks like the search box at th top of Microsoft Outlook 365 application.

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

Was this removed in the most recent Winforms update?

I can't find it in the documentation nor the tool box in Visual Studio

Hello!

I was trying to use Sorting/Filtering/Grouping while using VirtualMode by using the default properties and methods and wasn't able to. I found this that said "In the future editions of RadGridView, we have planned to implement virtual grouping operations with a simpler and more useful API." in the year 2009. Have there been any changes? Can i use the functionalities that i want while using VirtualMode without having to override and subscribe several events to workaround this problem?

JP

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.