Drag & Drop Crash in Admin Mode

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General Discussions GridSplitter
Patrick
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Patrick asked on 29 Jan 2025, 04:47 AM | edited on 29 Jan 2025, 04:48 AM

I know this isn't entirely related to Telerik.

I read on GitHub, in the Windows App SDK repository, that there is an issue with dragging UI elements when running an app elevated as an Administrator.

In the past, I built my own GridSplitter using the drag-and-drop gesture in an older version of MAUI, and it worked perfectly. However, now with MAUI 9, if I run the app as an Administrator, dragging crashes the app with a "Catastrophic failure. Drag start failed. If this is an elevated process, drag/drop is not supported there." due to UAC limitations.

If I run it normally, everything works fine.

I was wondering if your new RadGridSplitter control and other similar controls in the Windows build also crash when using drag in Admin mode?
I project to replace mine by yours 😉

I know that some developers implement their own custom drag-and-drop manager. Have you done something similar in your Telerik MAUI package? If so, can it be used as a replacement for the built-in Windows App SDK drag-and-drop API?

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Elena
Telerik team
answered on 30 Jan 2025, 03:27 PM

Hi Patrick,

I am glad to hear that you are considering to start using the Telerik UI for .Net Maui controls.

Indeed, there is an issue with the drag & drop functionality while running the application as an administrator. Most certainly you came across this ticked in GitHub: https://github.com/microsoft/microsoft-ui-xaml/issues/7690 which is still not resolved. The Telerik Maui Controls are also affected by this issue.

As for the custom drag-an-drop manager, we do not provide such publicly.

The good news is, that the GridSplitter works as expected even when the application is run as an administrator as it is not based on drag and drop.

In case you have further questions, don't hesitate to ask.

Regards, Elena Progress Telerik

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Elena
Telerik team
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