There is a significant delay when opening a folder with a large number of children when a filter is applied compared to the native Windows dialogs. 

The exception is thrown when creating a new AutomationPeer for the RadBreadcrumbBar element.

If a file with the same name set as the FileName is contained in the output directory of the project, when clicking the Save button in the InitialDirectory, the file is saved in the output directory instead of the current directory.

changing file system via rad file / save dialogs in opened in new app domain causes an application crash
"The calling thread cannot access this object because a different thread owns it."

 IndexOutOfRangeException is thrown when deleting files while the FileDialog is loading.

The FileName property is sometimes set wrong after a drive is selected from the Tree Navigation Pane and the Open button is clicked. 

You can show the shortcuts by adding a Filter, however in the MS dialogs they are visible by default. 

When a link to a folder is selected and the Open button is clicked, the RadOpenFileDialog does not navigate to that folder. 

Using RadOpenFileDialog reports a lot of binding errors. #26 seems to happen all the time, whereas #40 is related to the length of the initial directory.

The dialog is working, but those errors are really disturbing. The more false binding errors we get, the higher the possibility is that we miss real errors. Suppressing them by setting the error level to Critical is not a solution, as it will suppress real errors as well.

 

System.Windows.Data Error: 26 : ItemTemplate and ItemTemplateSelector are ignored for items already of the ItemsControl's container type; Type='RadWatermarkTextBox'
System.Windows.Data Warning: 40 : BindingExpression path error: 'IsHidden' property not found on 'object' ''OpenFileDialogViewModel' (HashCode=39129256)'. BindingExpression:Path=IsHidden; DataItem='OpenFileDialogViewModel' (HashCode=39129256); target element is 'RadBreadcrumbBarItem' (Name=''); target property is 'Visibility' (type 'Visibility')
System.Windows.Data Warning: 40 : BindingExpression path error: 'IsSystemHiddenActual' property not found on 'object' ''OpenFileDialogViewModel' (HashCode=39129256)'. BindingExpression:Path=IsSystemHiddenActual; DataItem='OpenFileDialogViewModel' (HashCode=39129256); target element is 'RadBreadcrumbBarItem' (Name=''); target property is 'Visibility' (type 'Visibility')
System.Windows.Data Warning: 40 : BindingExpression path error: 'IsHidden' property not found on 'object' ''OpenFileDialogViewModel' (HashCode=39129256)'. BindingExpression:Path=IsHidden; DataItem='OpenFileDialogViewModel' (HashCode=39129256); target element is 'RadBreadcrumbBarItem' (Name=''); target property is 'Visibility' (type 'Visibility')
System.Windows.Data Warning: 40 : BindingExpression path error: 'IsSystemHiddenActual' property not found on 'object' ''OpenFileDialogViewModel' (HashCode=39129256)'. BindingExpression:Path=IsSystemHiddenActual; DataItem='OpenFileDialogViewModel' (HashCode=39129256); target element is 'RadBreadcrumbBarItem' (Name=''); target property is 'Visibility' (type 'Visibility')
System.Windows.Data Error: 26 : ItemTemplate and ItemTemplateSelector are ignored for items already of the ItemsControl's container type; Type='RadBreadcrumbBarItem'

An InvalidOperationException is thrown with the following message: "Cyclic reference found while evaluating the ThemeStyle property on element ..."

The error message appears after you do several operations with the dialog and then call the Directory.Move() method. The message is "Access to the path <path> is denied".

TextSearch navigation in the Main Pane does not work. If you press letter "a" the first folder with Name starting with "a" should be selected.
This needs to work in alll layouts including Details which uses RadGridView.

The items inside the Tree Navigation Pane are not sorted in the same way as the native MS dialog. In our OpenFolderDialog when there is a file or folder name which starts with underscore "_" the file/folder is placed at the bottom of the tree navigation view. Looking at the tree from the MS dialog it is placed at the top.

In the Main Pane, the items are sorted correctly.

When the layout type is set to Details the rename with the slow double click doesn't work. The selected file/folder doesn't enter edit mode.

OpenFile/SaveFile dialog or ExplorerControl with Multiselect, Details View and Filter applied.

Click on a file / fodler in gridview - argument exception occurs.

"Property FileSystemInfo is not defined for type System.Object."

On Windows Server 2012 R2, the Search field in the ExplorerControl doesn't appear to work.  This is observable using the Demo app.

When you type into the Search box, the main pane clears of all file/folder entries, but the matching results never appear.

(Note: Windows Server 2012 R2 isn't available in the OS box, so I chose 2008.)

Hello.

I've created buttons that are bound to FileDialogCommands for sending commands to an ExplorerControl, as shown here:

https://docs.telerik.com/devtools/wpf/controls/radfiledialogs/features/commands

 

Everything works when the ExplorerControl is visible.  However, if the ExplorerControl's Visibility is set to Collapsed (which I need based on a condition), the Command bindings on the buttons throw the below error:

System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.Windows.Controls.FileDialogs.ExplorerControl.CanExecuteHelper(Object sender)

 

The UserControl that hosts the ExplorerControl is being imported through MEF.  I don't know if that's a factor.

Either way, it looks like a null check might be needed for the InternalViewModel property.

This is reproducible only with display language of the Windows set to a language different than English. It was originally reproduced with French.

If you set the initial directory to a network dir (ex: \\MyPcName\SharedFolder2\MyFiles), and open the dialog, initially the correct folder is loaded. However, if you wait several seconds without doing anything, the currently opened directory automatically changes to the root "Network" dir.

The contents of the Path Navigation Pane and Main Pane are not synced with the selection inside the Tree Navigation Pane when a local drive is shared through a remote desktop connection.

This behavior differs from the standard MS FileDialogs, where the expand arrow is not visible for such folders.