We are encountering severe UI thread blocking when using RadOpenFolderDialog during high-volume file operations (concurrent exports).

Technical Findings: After investigating the internal implementation, we identified the root cause in the DialogWindowBase class. Specifically, inside the SetupDialogContent method, the AddWatcher parameter is hardcoded to true.

This forces the underlying DirectoryInfoWrapper to initialize a FileSystemWatcher and unconditionally subscribe to the following events:

• Changed
• Created
• Deleted
• Renamed

Because our application generates a large volume of file events during export, these subscriptions flood the message pump and hang the UI thread.

The Question: Since AddWatcher is hardcoded, is there a supported way (or a workaround via reflection/subclassing) to:

Override SetupDialogContent to pass AddWatcher = false?

Access the DirectoryInfoWrapper instance post-initialization to manually unsubscribe from these events?

We urgently need to stop this component from listening to file system changes to maintain application responsiveness.

Version: 2024.4.1213.462

I recently found that you cant follow shortcuts to folders in the RadSaveFileDialog. We have several end users that have created shortcuts to folders and when they try to open those folders the dialog just selects the shortcut file instead and returns.

There is an option called DereferenceLinks in the OpenFileDialog which seems to do the job but this is not available on any other dialogs.

Is there a work around for this or can that option be made available on the other dialogs too?

Hi,

I encountered the same issue as this - https://www.telerik.com/forums/radopenfolderdialog-is-super-slow

May I ask if there is any solution to date?

Regards

Please see attached image. What could be the cause of this? Some Fonts missing?

I'm using StyleManager for Theming.

Hi,

I used ExplorerControl to create a custom FileOpen Dialog.

Now I want to include a file preview when clicking on a file of specific type.
Unfortunately I cannot find a way to get notified by a change of selected Filename.

Is there a way to do that?

Best Regards,

Dominic

Hello,

is it possible to manipulate or clear the navigation history of the explorer control?

Best regards,

Philipp

Hello,

Our application has a requirement to automatically log a user out after a period of input inactivity, e.g. keyboard or mouse events for security reasons.

When we automatically log out a user, we also want to close any open modal dialogs in our application, including any modal dialogs open in the Telerik ReportViewer - such as the Export / Print dialogs.

Is there a way for cancel/close these modal dialogs?

I looked at the specific events such as ExportBegin  as it provides a way to cancel the export, but I need a way to close the dialogs at any time not just at the specific time the export starts.

Thanks,

Canice.

In WPF there is an export icon looks like a diskette. One can specify what type of export. PDF, Exel etc. then a call to Windows "Save As" dialog box. 

My question is there a way to populate/specify the file path in the "Address bar"?

Some kind of registry or something. The end user can of course alter the destination if they wish.

When using the OpenFileDialog to browse for image files using large icons, the images are not displayed with their thumbnail previews, but rather the generic image placeholder.  Is there a way to show the thumbnail previews like Windows file explorer?