Questions on UI for WPF Forum

1 answer

157 views

Bind connector creation by view model binding

Hi,

I'm using ObservableGraphSourceBase and NodeViewModelBase with a StyleSelector to render the shapes. Nice. But I want my shapes to have connectors in certain positions dependent on the view model. How can I do this?

In my case the shapes are rectangular with the left connectors being inputs and the right connectors being outputs. For a type 'A' NodeViewModel I want the shape to have 2 input connectors (left), no top or bottom connectors, and one right connector.

I can add/remove connectors on a drag and drop or edit event ... but how do I create the shape, via a style, with the connectors defined by the NodeViewModel?

Thanks

Diagram

answered on 26 Jun 2019

3 answers

194 views

The TabbedWindow not working with the Fluent Theme on a clean machine.

I have 4 machines 2 Dev with VS / Telerik and 2 Test both are clean Win 10 machines. When I run the project below in Dev it works perfectly but in Test the theme get's all screwed up and goes mostly transparent.

I have tried this with couple of other themes and it works fine and I have tried it with the Tab Control rather than the TabbedWindow and that also works. It looks like a combination of Fluent and TabbedWindow breaks.

To recreate, make a simple 1 page App, add the TabbedWindow and some content, then set the Fluent Theme in the code behind.

You have to test this on a "clean" machine, without VS or Telerik installed for it to break.

<Grid>

<telerik:RadTabbedWindow >

<telerik:RadTabbedWindow.Items>

<telerik:RadTabItem Header="Test Tab">

<telerik:RadGridView />

</telerik:RadTabItem>

</telerik:RadTabbedWindow.Items>

</telerik:RadTabbedWindow >

</Grid>

public MainWindow() { StyleManager.ApplicationTheme = new FluentTheme(); InitializeComponent(); }

TabbedWindow

answered on 26 Jun 2019

1 answer

191 views

Bug: ExpressionChanged not fired correctly

Hey,

currently I'm trying to implement the RadExpressionEditor for creating custom Grid view groups. Everything is working fine besides the ExpressionChanged event of the RadExpressionEditor. The event is not called every time the expression changed. If I enter the following expression:

"Sample: " + GetFormattedField("1282", "N2")

Expression changed is called.

if I remove the last bracket ExpressionChanged gets fired and the expression is invalid (this behaviour is correct). If I add the bracket again, ExpressionChanged IS NOT fired. This behaviour occurse in different scenarios. This makes it difficult to trust the system, because we have a lot of invalid expressions, even a valid expression is entered.

Thank you!

ExpressionEditor

answered on 26 Jun 2019

0 answers

168 views

Abnormal Listbox drag indicator

As image attached ,when item is dragged for reorder,drag indicator is cover whole column(as red box shown) but not specific column and row(as green box shown).Is there are some workaround to fix that?

<Window.Resources>

<Style x:Key="DraggableListBoxItem" TargetType="telerik:RadListBoxItem">

<Setter Property="telerik:DragDropManager.AllowCapturedDrag" Value="True"/>

</Style>

</Window.Resources>

<telerik:RadListBox x:Name="scanList" KeyboardNavigation.DirectionalNavigation="None" KeyboardNavigation.AcceptsReturn="False" ItemsSource="{Binding Path=Scans,Mode=TwoWay}" SelectionMode="Multiple" ScrollViewer.VerticalScrollBarVisibility="Hidden" ScrollViewer.HorizontalScrollBarVisibility="Disabled" CanKeyboardNavigationSelectItems="False" ItemContainerStyle="{StaticResource DraggableListBoxItem}">

<telerik:RadListBox.DragDropBehavior>

<telerik:ListBoxDragDropBehavior telerik:TouchManager.DragStartTrigger="TouchMove"/>

</telerik:RadListBox.DragDropBehavior>

<telerik:RadListBox.ItemsPanel>

<ItemsPanelTemplate>

<telerik:VirtualizingWrapPanel/>

</ItemsPanelTemplate>

</telerik:RadListBox.ItemsPanel>

<telerik:RadListBox.ItemTemplate>

<DataTemplate>

<Grid>

<Image Source="test.jpg" HorizontalAlignment="Center" VerticalAlignment="Center"/>

<Image HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="48" Height="48" Opacity="0.15" Source="/ePresort;component/Icon/edit.png" />

<Label Content="{Binding Path=ScanId,Mode=TwoWay}"/>

</Grid>

</DataTemplate>

</telerik:RadListBox.ItemTemplate>

</telerik:RadListBox>

PS: ItemHeight and ItemWidth of VirtualizingWrapPanel is set by C# code

ListBox

asked on 26 Jun 2019

5 answers

233 views

[Solved] Abnormal Listbox drop row indicator

When drop the item into Expander-listbox, the indicator will show at the first row, however the item is insert into last row. Please have a look at the attached screenshot

ListBox

answered on 25 Jun 2019

1 answer

198 views

[Solved] WPF vs .net core features

Hi. Not sure if this is the place to ask this.

I have a WPF scheduler app built around this scheduleview.

If I want to migrate it to .net core (asp.net), is there a migration path?

Are the features equivalent? How can I find out how difficult could this be?

Thanks in advance.

ScheduleView

answered on 25 Jun 2019

6 answers

247 views

Replacing content without moving current selection

Hello all,

How can I replace contents using RadRichTextBox/RadDocumentEditor without moving the RadDocument.Selection to the range I want to change?

Moving and restoring the selection seems to work will scroll the document to the new selection position, which is undesired.

After going through similar posts, I found that I can insert content at an arbitrary location using the InsertFragment(DocumentFragment, DocumentPosition) method, but no way to replace a whole range (e.g. defined by two DocumentPosition instances) or even delete the contents of an such a range.

RichTextBox

answered on 24 Jun 2019

2 answers

392 views

Setting the ZIndex for CartesianPlotBandAnnotation while using AnnotationsProvider

I am using the following AnnotationsProvider to generate annotations using data bindings:

<telerik:ChartAnnotationsProvider Source="{Binding LocationHistory}">
<telerik:ChartAnnotationDescriptor>
<telerik:ChartAnnotationDescriptor.Style>
<Style TargetType="telerik:CartesianPlotBandAnnotation">
<Setter Property="Axis" Value="{Binding HorizontalAxis, RelativeSource={RelativeSource AncestorType=telerik:RadCartesianChart}}" />
<Setter Property="From" Value="{Binding Item2}" />
<Setter Property="To" Value="{Binding Item3}" />
<Setter Property="Fill" Value="{Binding Item1, Converter={StaticResource LocationToBrushConverter}}" />
</Style>
</telerik:ChartAnnotationDescriptor.Style>
</telerik:ChartAnnotationDescriptor>
</telerik:ChartAnnotationsProvider>
</telerik:RadCartesianChart.AnnotationsProvider>
</code>

I have a bunch of LineSeries elements as well inside the RadCartesianChart element which is the parent of this AnnotationsProvider.

I am trying to get these annotations to render below all the LineSeries elements. But I am unable to set the ZIndex propery through ChartAnnotationDescriptor.Style. Could you please let me know if there is a workaround for this issue?

ChartView

answered on 24 Jun 2019

14 answers

316 views

Edit on focus

Hi,

I would like to be able to begin typing the moment the MultiColumnComboBox has focus, which is not possible at the moment. I need to click in the control or tap Tab a second time before I can begin typing.

Best Regards,
Hans

MultiColumnComboBox

answered on 22 Jun 2019

5 answers

328 views

Telerik.Windows.Controls.ScheduleView : System.InvalidOperationException:at System.Windows.Data.CollectionView.DeferRefresh

Hi Team,

We are facing the below exception when scheduling an appointment. we are using "2017.2.503.45" version of Telerik.Windows.Controls and VS 2017.

System.InvalidOperationException:

at System.Windows.Data.CollectionView.DeferRefresh (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at Telerik.Windows.Controls.ScheduleView.ScheduleViewDataConnection.SetGroupingAndFiltering (Telerik.Windows.Controls.ScheduleView, Version=2017.2.503.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
at Telerik.Windows.Controls.ScheduleViewBase.RegenerateGroupHeaders (Telerik.Windows.Controls.ScheduleView, Version=2017.2.503.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
at Telerik.Windows.Controls.ScheduleViewBase.OnResourceTypesSourcePropertyChanged (Telerik.Windows.Controls.ScheduleView, Version=2017.2.503.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
at System.Windows.DependencyObject.OnPropertyChanged (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.FrameworkElement.OnPropertyChanged (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.DependencyObject.NotifyPropertyChange (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.DependencyObject.UpdateEffectiveValue (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.DependencyObject.InvalidateProperty (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.Data.BindingExpressionBase.Invalidate (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.Data.BindingExpression.TransferValue (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at MS.Internal.Data.ClrBindingWorker.OnSourcePropertyChanged (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.WeakEventManager+ListenerList`1.DeliverEvent (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.WeakEventManager.DeliverEventToList (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.ComponentModel.PropertyChangedEventManager.OnPropertyChanged (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at ViewModel.WorkerCompleted (SampleModules.Test, Version=2.132.18145.3, Culture=neutral, PublicKeyToken=null)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)

Please suggest as to handle this issue.

Thanks,

Parameswari

General Discussions

answered on 21 Jun 2019