Hello,

I am using Telerik UI for WPF 5.0 version 2021.3.1109 (NoXAML version) in Visual Studio 16.11.17.

My problem is that the WPF UI designer does not display the telerik RadWindows I design. The error message is:

XDG0062 The resource "RadWindowStyle" could not be resolved.

I already followed the instructions given in this KB article. This article especially mentions to include the following XAML in my RadWindows, but that did not solve my problem:

<telerik:RadWindow (namespaces omitted) ... Style="{StaticResource RadWindowStyle}"/> 

In my Application file, I have a Style declaration like this:

<ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/Telerik.Windows.Themes.Expression_Dark;component/Themes/System.Windows.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.Expression_Dark;component/Themes/Telerik.Windows.Controls.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.Expression_Dark;component/Themes/Telerik.Windows.Controls.Input.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.Expression_Dark;component/Themes/Telerik.Windows.Controls.Navigation.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.Expression_Dark;component/Themes/Telerik.Windows.Controls.Docking.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.Expression_Dark;component/Themes/Telerik.Windows.Controls.GridView.xaml" />
                <ResourceDictionary Source="/Telerik.Windows.Themes.Expression_Dark;component/Themes/Telerik.Windows.Controls.FileDialogs.xaml"/>
                <ResourceDictionary>
                    <Style TargetType="views:MainWindow" BasedOn="{StaticResource RadWindowStyle}" />
    </ResourceDictionary.MergedDictionaries>
</ResourceDictionary>

In the application file, I do not get the above error message (XDG0062).

So I concluded that somehow, my Window classes (e.g. MainWindow) don't receive the declared styles.

Important: I have setup my project as a Console Project (because I must implement a CLI and this was the easiest way). The UI is started with the following C# lines of code in Program.cs:

Application app = new Appl();
app.Run();

We have a RadListBox bound to a ObservableCollection of models.  We would like sort them based on a property.  The property value can also change.  Is there any way to sort them?

What we are trying to do is create a "mover" to rank items, is a RadListBox not the best choice?

Hi,

I'm trying to use your RichTextBoxEditor and I observe that when I'm inserting an image and I save my document as xaml, my image is save as rawdata and not as an UriSource...

Do you have a solution ?

Should I create a custom SaveAs Xaml ? Can I have the source code of this command (SaveCommand) ?

Hi, 

I'm currently trying to use RadSyntaxEditor in my solution but I cannot use my mouse to select a position in it.

I've got a TabControlItem containing some DockPanel. Most of them are TextBlock (Label) + TextBox (Value) or TextBlock (Label) + ComboBox (value) and the last is composed of a TextBlock (Still Label) and a RadSyntaxEditor.

It contains a TextDocument and use xmlTaggers.

Everything works except that I cannot click inside to select a position. I only can double-click to select a block of text and move it.

If I use mouse click inside or outside, the only way to go back inside is to use Tab to switch accross all other control...

When I'm inside, I can write, add tabulation, click enter, everything ! but only with keyboard. One click with the mouse and I have to use Tab to get back in.

Can you help me to resolve this ?

This was reported by a user, so it could be a Windows issue.

The user says it was not doing this a month ago. We generate a template file for the user to fill. After saving they upload/import and it used to work OK.  Sometime over the last few weeks, users started to get the "File in use" error.

Google is of no use as it only brings back "file in use when trying to delete it" results.

Any ideas?

Is there an option that can be set in code to avoid this?

I have a grid where some rows have a sub grid.  If the user clicks the row's toggle button, it shows the grid.

The problem happens if the user does anything on the page to show a modal. We do this by adding our dialog view to the outer region, then blocking. As soon as the block is called you can see it drops all columns of the grid but the first. The grid remains that way after you close the dialog. This is not limited to this view, I have found other places where we have a GridView in a row and it behaves the same when a modal is shown.

You can see this in the attachments.

Any help would be appreciated.

EDIT: added snippet showing dialog open

Hi,

I tried to use RadSyntaxEditor with MVVM approach but I did not succeed.

I followed all tips you gave on the forum but it still doesn't respond to all my needs.

I try to create a custom dependency property and bound my textdocument (located in my view model) in it but the dependency property got the radsyntaxeditor object and not TextDocument or content in TextDocument.

With this solution I was able to initialize the value of the document in RadSyntaxEditor but the callback method was not able to capture modification in the content of the document. So when I do modificaton, I wasn't able to applied them in my TextDocument in VM.

Finally I use events DataContextChange to init and DocumentChangeContent to update mine but it's not MVVM approach...

Do you have some advice for me to succeed in the MVVM approach ?

Hi Telerik support team,

I’m strugling with filtering a special case in the wpf gridview. Let me explain..

 I’ve a mainViewModel with an ObservebleCollection of type SubViewModel. Each subViewModel is a row in the grid. In the subViewModel I’ve a float property which is bound to a column through a valueConverter. The float (a representation of millimeters in the metric system) gets converted to inches in the imperial system. Inches can contain characters which are not supported by float (like /, - etc.) That’s why I use a converter to change it into a string. The converter works correct, also the convert back. I get a correct float value setted in my subViewModel.

The issue I walk into is when I filter the column. The filter mechanism seems to set a value in a fieldFilterControlViewModel and I get an error when I filter.

Can I change this behaviour? I would be nice that the filtervalue gets through the convertBack first and then apply the filter. So a converter on the filter inputvalue. Or, filtering directly on the showed values in the grid would also be ok.

Please help me out of this.

Regards,

Daniel

Error:

System.Windows.Data Error: 8 : Cannot save value from target back to source. BindingExpression:Path=Value; DataItem='FieldFilterControlViewModel' (HashCode=31636323); target element is 'TextBox' (Name=''); target property is 'Text' (type 'String') FormatException:'System.FormatException: Input value was not in a correct format.

Hello Telerik team,

I`ve faced an issue with GridView. Once when I resize the column it throws NullReferenceException with the following stack trace

   at Telerik.Windows.Controls.GridView.GridViewHeaderCell.HeaderToResize(Object gripper)
   at Telerik.Windows.Controls.GridView.GridViewHeaderCell.OnColumnHeaderResize(Object sender, DragDeltaEventArgs e)
   at System.Windows.Controls.Primitives.DragDeltaEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
   at System.Windows.Controls.Primitives.Thumb.OnMouseMove(MouseEventArgs e)
   at System.Windows.UIElement.OnMouseMoveThunk(Object sender, MouseEventArgs e)
   at System.Windows.Input.MouseEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.Run()
   at System.Windows.Application.RunDispatcher(Object ignore)
   at System.Windows.Application.RunInternal(Window window)
   at System.Windows.Application.Run()
   at WpfApp1.App.Main()

Here is an example project to help you to reproduce this issue.

Steps to reproduce:

1. Resize the "Phone" column to increase its size, do it far outside of the application window
2. Resize the "Comments" column to increase its size, do it far outside of the application window
3. Resize the "Description" column to increase its size, do it far outside of the application window
4. Resize the "Name" column to increase its size, do it far outside of the application window

And at some moment the application should throw NullReferenceException.

Please look at this one or let me know if I did something wrong.