Hello,

it seems that having a RadPane with a binding for its IsPinned property needs to bound with Mode=TwoWay for it to work. Why is this? The problem comes more apparent when I'm using (in the real application) binding to a ViewModel that gets converted through a (Multi)ValueConverter. If I have to have the binding mode be TwoWay I have to implement the ConvertBack method of IValueConverter and have it return something like null, even though I only want the model converted one way. I absolutely do not want the pinned/unpinned status of the RadPane having any influence on my model.

Also, it seems the ConvertBack is only called once at the start of the program or when the actual pin/unpin icon is pressed. And this is very bad when we have the TextBox binding. If I write a string longer than 5 characters into it, the pane opens. If I then unpin the pane, the TextBox is cleared because the converter returns null!

Below is a repro of the problem, standard WPF .NET 4.7.2 project with only the Telerik nugets added. Clicking the checkbox Pane 1 does nothing. The checkbox Pane 2 pins/unpins Pane 2 because it is bound with Mode=TwoWay. The same can be seen with the textbox. When typing a string more than 5 characters in length, the last pane opens if the binding mode is TwoWay.

My MainWindow.xaml

and the converter:

Hi all,

Is it possible to display icons for child items of a navigation view in a data-bound hierarchy scenario? I'm following the documentation at https://docs.telerik.com/devtools/wpf/controls/radnavigationview/populating-with-data/hierarchical-databinding but also in this example the icons are missing for child items (even if them are defined in the example data model).

Thanks.

After trying the First Look exemple code, there is something I did not find.

If we want to store the control content to a database or any data storage, we can look at the DataContext.Data to get back all the cards.
State property is well corresponding to the new column for exemple.

But how to know in which orders they are now sorted. There is no "Order" / "Index" / "Position" property we can bind ?

Without this info it is difficult to redraw later the same board in the same state.

Is there a way to get this information

Thanks

Hi,

we are currently tweaking the initial loading performance of a RadDiagram with >1000 Shapes and >5000 Connections. According to the attached DotTrace profiler run, we are spending a good amount of time (~5 seconds) within the function "UpdateFocusedElement" which intuitively seems unnecessary during the initial load of a diagram.

Would you agree that this call is unnecessary during initial load and if so could you suggest a way to temporarily suppress or work around this to improve loading time?

Thanks in advance!

Regards

I'm using RadGlyph with the FontAwesome library and it works great. I register the font in my App.xaml - OnStartup  and when I run my application the icons load correctly and look crisp and clear. 

The issue is in the Visual Studio designer RadGlyph complains constantly that the 'Font family FontAwsome is not registered'. This breaks parts of the UI designer and add these errors to the Error List make it look a lot worse than it is and makes finding real errors harder. 

My question is, how do I register the custom font in away that RadGlyph can detect it in the designer or can I turn off the detection of this error altogether? I don't need to see the icon in the designer I just want to clean up the error messages. 

Thanks,

Richard

Hello everyone.

I have shell WinForms application that hosts WPF User Control contains RadDocking. When I drag RadPane, a RootCompass indicators of RadDocking shows in wrong location (see attachment). It looks like indicators shows without offset of embedded WPF Control relatively shell WinForms application.

Is it bug? Or maybe is there a way to change a location of RootCompass indicators? 

Thank you.

Hello.

I want add ToolTip on GridViewHeaderCell, column created in code as

column = new GridViewDataColumn
                {
                    ColumnGroupName = args.ColumnDef.ColumnGroupName,                
                    DataMemberBinding = new Binding(args.ColumnDef.Member)
                    {
                        Mode = BindingMode.TwoWay,
                        UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,
                    },
                    IsReadOnlyBinding = new Binding(args.ColumnDef.IsReadOnlyMember)
                    {
                        Converter = new NullToBooleanConverter {IsInverted = true}
                    },
                    Header = args.ColumnDef.Header,
                    HeaderCellStyle = TryFindResource("DataHeaderCellStyle") != null ? (Style)Resources["DataHeaderCellStyle"] : new Style(typeof(GridViewHeaderCell)),

                    IsVisible = true,
                    IsFilterable = false,
                };

                if (args.ColumnDef.ToolTip != null)
                    column.ToolTip = new ToolTip { Content = args.ColumnDef.ToolTip };

in xaml i added style

<Style x:Key="DataHeaderCellStyle" BasedOn="{StaticResource GridViewHeaderCellStyle}" TargetType="telerik:GridViewHeaderCell">
            <!--<Setter Property="ToolTipService.ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=Content.Column.ToolTipText, Mode=OneWay}" />-->
            <Setter Property="ToolTip" Value="{Binding Content, RelativeSource={RelativeSource Self}}"/>
                <Setter Property="HorizontalContentAlignment" Value="Center"/>
                <Setter Property="TextWrapping" Value="Wrap"/>
                <Setter Property="FontSize" Value="12"/>
</Style>

If use <Setter Property="ToolTipService.ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=Content.Column.ToolTipText, Mode=OneWay}" /> or <Setter Property="ToolTipService.ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=Content.ToolTipText, Mode=OneWay}" /> this is don't work, no tooltip.

If use <Setter Property="ToolTip" Value="{Binding Content, RelativeSource={RelativeSource Self}}"/> (seen here https://www.telerik.com/forums/tooltip-on-column-title) content of GridViewHeaderCell will be lost (on attachement).

How need set tooltip in style property?

If add event subscribe (as here https://www.telerik.com/forums/radgridview---tooltip-for-dynamically-created-column), will work...

ctor

{

    InitializeComponent();
    EventManager.RegisterClassHandler(typeof(GridViewHeaderCell), GridViewHeaderCell.MouseEnterEvent, new RoutedEventHandler(OnMouseEnterEvent));
}

        private void OnMouseEnterEvent(object sender, RoutedEventArgs e)
        {
            if (sender is GridViewHeaderCell cell && cell.Column.ToolTip != null)
            {
                cell.ToolTip = cell.Column.ToolTip;
            }
        }

The performance of the property grid isn't great, and it appears that the performance degrades on some scenarios.

We are placing the property grid inside a RadDocking. The pane itself has the IsHidden bound to a property, since the software is an IDE and depending on the type of the active document, we either show a toolbox and  / or a property grid.

I can see with dotTrace that something is leaking (The weakevent listener is raising the handler more time than it should).

Code:

MainWindow.xaml:

MainWindow,cs

MyObject:

PropertiesControl.xaml:

If you click the first button and then the second button over and over again, then you would notice that the property grid becomes slower and slower, and that the Telerik.Windows.Data.WeakEvent+WeakListener`1.Handler() is being called more than once, event though OnCollectionChanged was called only once.

On Telerik 2016.Q2 the problem was even worse. The OnCollectionChanged would be called as the number of properties the object has.

Hi,

I am storing the user changes in the PDF viewer for multiple PDFs.

For zoom, there is the ScaleFactorChanged event.

It seems there is no event exposed for Rotation, like RotationChanged?

How is it possible to store the information when the user changes the rotation?

As a workaround, I now check the rotation with :

 DetailPdfViewer.CommandDescriptors.RotateClockwiseCommandDescriptor.Command.CanExecuteChanged += OnRotationChanged;

and then get DetailPdfViewer.RotationAngle, but this seems really hacky to me. It just triggers to often, so I do not like having this in production too long.

Best regards,

Kevin

Hello,

I am having an issue with reordering multiple selected items in a RadListBox. I am trying to select multiple items in a RadListBox, and drag them within the same RadListBox to reorder them. However, it doesn't always work. When I start to drag, sometimes I will be able to reorder the items (cursor indicator and drop visual indicator in the RadListBox show normally), and sometimes it won't. The drag visual always works normally, but it looks like AllowDrop is immediately false sometimes (not sure if that is what is actually happening, but it's the best way I can describe it). I have a test RadListBox for theme visual feedback and testing, and the behavior is happening there. Here is the code I am using:

And here is the code for ReorderableListItemStyle:

Is there something I am missing? I am using Telerik WPF R3 2020.