Hello,

I updated to the newest version of Telerik UI for WPF last Friday, and ever since I have been receiving this issue. Any control where I set a property for a GridView, or some GridView component, using a style, I now receive this error:

"The property 'CanUserSelectColumns' is not a DependencyProperty. To be used in markup, non-attached properties must be exposed on the target type with an accessible instance property 'CanUserSelectColumns'. For attached properties, the declaring type must provide static 'GetCanUserSelectColumns' and 'SetCanUserSelectColumns' methods."

This error occurs even when I set styles on GridViewCell, but not all GridView components. See attached images for example. The project still builds and runs correctly, but this prevents me from using the designer, and also adds a lot of noise to my errors list.

Please let me know if there is a solution.

Thanks

Hello,

We are using RadListBox as part of UserControl. Control consists of couple of data templates one of which contains list box:

Control always used with the same view model. Most of the times SelectedItem binding works fine. But in two places it doesn't.

There is no binding related errors in the output, RadListBox is correctly populated with items and RadListBox.SelectedItem has correct value.

But in this two problematic cases SelectedItem property of the view model does not get updated.

We suspect that the problem might have something to do with the initialization order, but could not detect any specific pattern.

In one case the control used in the tab in the other in dialog window.

Hello!

I have similar, but slightly different scenario for misplaced dock indicators. Similar to https://www.telerik.com/forums/wrong-rootcompass-indicators-location, but in my case the host process is also WPF application that have ContentPresenter with content from another WPF process.

I've tried to implement IWindowInteropabilityAdapter, but it's properties are not being read at all.

Attaching Adapter

Host Main Window xaml

I also tried to look at OnPreviewShowCompass(PreviewShowCompassEventArgs args) on child process RadDocking, because I can track main app to know that it was moved to the other screen, I'm able to have screen handle and screen dimensions, but I have no clue how to correct Compass placement even with all that information.

Is there anything I got missing, done wrong or could change to make it work as expected?

I have a few AutocompleteBoxes databound to some objects (standard MVVM pattern).

If I make a selection, then press the Tab key, the objects are updated just fine.

If I just click to another control, they are not. The lose focus event is fired, but the Selecteditems is null.

Is there a way to make this work properly?

Good day,

i would like to achieve something like the Agenda View with Columns for each "Resource". eg:

                       Person 1 | Person 2 | Person 3 | ....

Monday

Tuesday

Wednesday

....

Is this possible? Could you please point me in de right direction?

Thank you for your time and help!

Best regards
Jürgen

Good day,

Is there a way I can add custom property to RadWatermarkTextBox? For example adding isRequired property and use it in the control template.

Thank you.

Hello

How would I bind the AutoCompleteBox to a simple List<string> or to a string array. Documentation only shows how to bind to a custom object. 

Thanks

Hi Team,

     I am very new to WPF world and we are designing an application which will be having multiple menus and sub menus. As the application is bigger and having lot more functionality we are using Modular approach defined by PRISM along with complete use of MVVM(zero code behind). We are using Telerik controls for rich UI and for design of the Menu we are using Navigation View(Hamburger Menu). While designing such architecture we are facing many issues as follows:

1. How to bind command to the Navigation View Item events for MVVM prism architecture? I have tried many ways to achieve this but no success(Approaches are mentioned below the questions).

2. How to navigate and load different pages or user control on click of the Navigation View Items as our pages or user controls are present in separate application?(PRISM Modular approach)

3. Want to load this contents in ContentControl Prism Region Manager at runtime.

I have gone through the documentation of Rad Navigation View but not found any ways to achieve the above issues.

Below is the approach we tried to bind command.

1. Approach One :  Tried setting in Style with property setter at both ItemStyle and ItemBaseStyle but both are not working.

2. Approach Two : Tried with Telerik event Command Behavior Event Bindings. 

3. Tried in Telerik radNavigationView.Item it is also not working

We are able to show the static value like title with the below code : 

But instead of the RadNavigation View Content we wanted to use Content Control to load dynamic controls using MVVM and Prism like this.

Below is my ViewModel Code.

Kindly Help us to achieve this.