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1 answer
82 views

I need a dialog box in WPF where I can select a folder or location in system. I used RadOpenFolderDialog but I also need Opened event handler similar to DialogParameters telerik control.

Need Opened event handler which points to method that will be called when the Opened event of the Window is fired. Please suggest solution for it.

Also if there is any other dialog box telerik control which is suitable for my requirement, suggest me.

Dinko | Tech Support Engineer
Telerik team
 answered on 02 Apr 2026
1 answer
55 views
Hi,
I open a RadOpenFileDialog  setting FileName with the full path of an existing file.
In the edit box in the low part of dialog I can see the path, and, if I click ok I get the file selected.
But in the list of files the path is not selected (the folder is also correctly set).

How can I select correctly the file and automatic scroll the view in order to see the seelction

Thank you
Luigi
Stenly
Telerik team
 answered on 19 Feb 2026
1 answer
118 views

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

Martin Ivanov
Telerik team
 answered on 13 Jan 2026
1 answer
150 views

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?

Stenly
Telerik team
 answered on 16 Oct 2025
1 answer
109 views

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

Martin Ivanov
Telerik team
 answered on 29 May 2025
1 answer
142 views

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

I'm using StyleManager for Theming.

Stenly
Telerik team
 answered on 20 Jun 2024
1 answer
250 views

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

 

Martin Ivanov
Telerik team
 answered on 22 Jan 2024
1 answer
161 views

Hello,

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

Best regards,

Philipp

Martin Ivanov
Telerik team
 answered on 27 Nov 2023
1 answer
170 views
I'm using a RadFilePathPicker to select a file. This gives a choice of dialogs to use via the DialogType property. Each of these dialog types have the LoadDrivesInBackground property but this is not available at the RadFilePathPicker level. Is it possible and if so how can I set this property at the RadFilePathPicker control level so that whichever dialog I use has this property set? 
Petar Mladenov
Telerik team
 answered on 16 Aug 2023
1 answer
183 views

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.

Todor
Telerik team
 answered on 01 Mar 2023
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