Questions on UI for WPF Forum

1 answer

280 views

Bind GridViewColumnCollection to static resource

Hi,

As the title describes it, I'm trying to bind the property "Columns" of a RadGridView to a static resource (could also be bound to a dependency property).

But of course, since this "Columns" property doesn't have a public setter, I can't simply set it with:

<telerik:RadGridView Columns="{Binding InitialColumns}"/>

Nor can I do:

<telerik:RadGridView>
    <telerik:RadGridView.Columns Items="{Binding InitialColumns}"/>
</telerik:RadGridView>

since the "Items" property of Collection<T> doesn't have a public setter either.

As you may have guessed, I'm trying to add a collection of initial columns to the grid. My ultimate goal is to have a template selector that would fill the grid with some initial columns based on some conditions. The rest of the columns would then be added dynamically in code at runtime.

How could I do that? Thanks!

GridView

answered on 22 Feb 2022

1 answer

419 views

Highlight color in VisualStudio 2019 theme

In VS2019 theme the highlight color for selected text in several controls is so light that is very difficult to tell if the text is selected or not.

You can see this in controls like MS Textbox or RadWaterMarkTextbox,

It looks like that the color used is the accentcolor property of the theme with certain opacity. The problem is that i don't know how to change this opacity.

I'm attaching two screen captures showing this, both of them from Telerik Color Theme Generator.

How can I change this color?

Window

answered on 22 Feb 2022

2 answers

122 views

ScheduleView Timeline fill space

Hi guys,

I use a ScheduleView in Timeline Mode to display when users had vacations.
My problem now is, that the size of the Timeline-Area with the columns doesn't grow.
If the available space is smaller a scrollbar appears (what is good).
But if the available space is bigger, the columns get smaller instead that the space is used.
I tried to play with the MaxTimeRulerExtent property but this doesn't seem to have an effect.

Is there something I'm missing?

Greetings Benedikt

ScheduleView

answered on 22 Feb 2022

0 answers

124 views

Exception on OnAutoGenerateColumnsChanged of GridViewDataControl

Hello Support team.
We got following exception on changing ItemCollection property of a custom control.

Version
Assembly Telerik.Windows.Controls, Version=2022.1.117.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7

Message
System.NullReferenceException: 'Object reference not set to an instance of an object.'

StackTrace

   at Telerik.Windows.Controls.GridView.Selection.CellInfoCollectionCellValidator.IsPublicCellValid(GridViewCellInfo info)
   at Telerik.Windows.Controls.GridView.Selection.CellInfoCollection.Add(GridViewCellInfo cellInfo)
   at Telerik.Windows.Controls.GridView.Selection.CellSelectionHandler.CoerceSelectedCellsIfNeeded(NotifyCellInfoCollectionChangedEventArgs e)
   at Telerik.Windows.Controls.GridView.Selection.CellSelectionHandler.InternalSelectedCells_CellsChanged(Object sender, NotifyCellInfoCollectionChangedEventArgs e)
   at Telerik.Windows.Controls.GridView.Selection.CellInfoCollection.OnCellsChanged(CellInfoCollectionChangeType changeType, CellInfoCollection addedCells, CellInfoCollection removedCells)
   at Telerik.Windows.Controls.GridView.Selection.CompositeSelectionHandler.UpdateSelectedCells(IList`1 items, Boolean isSelected)
   at Telerik.Windows.Controls.GridView.Selection.CompositeSelectionHandler.OnColumnsCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Controls.GridViewColumnCollectionInternal.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.InsertItem(Int32 index, T item)
   at Telerik.Windows.Controls.GridViewColumnCollectionInternal.InsertItem(Int32 index, GridViewColumn item)
   at Telerik.Windows.Controls.GridView.GridViewDataControl.AddAutoGeneratedColumns()
   at Telerik.Windows.Controls.GridView.GridViewDataControl.OnAutoGenerateColumnsChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp, Boolean preserveCurrentValue)
   at System.Windows.StyleHelper.InvalidatePropertiesOnTemplateNode(DependencyObject container, FrameworkObject child, Int32 childIndex, FrugalStructList`1& childRecordFromChildIndex, Boolean isDetach, FrameworkElementFactory templateRoot)
   at System.Windows.StyleHelper.ClearTemplateChain(HybridDictionary[] instanceData, FrameworkElement feContainer, FrameworkContentElement fceContainer, List`1 templateChain, FrameworkTemplate oldFrameworkTemplate)
   at System.Windows.StyleHelper.ClearGeneratedSubTree(HybridDictionary[] instanceData, FrameworkElement feContainer, FrameworkContentElement fceContainer, FrameworkTemplate oldFrameworkTemplate)
   at System.Windows.StyleHelper.DoTemplateInvalidations(FrameworkElement feContainer, FrameworkTemplate oldFrameworkTemplate)
   at System.Windows.Controls.Control.OnTemplateChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp, Boolean preserveCurrentValue)
   at System.Windows.StyleHelper.InvalidateContainerDependents(DependencyObject container, FrugalStructList`1& exclusionContainerDependents, FrugalStructList`1& oldContainerDependents, FrugalStructList`1& newContainerDependents)
   at System.Windows.StyleHelper.DoStyleInvalidations(FrameworkElement fe, FrameworkContentElement fce, Style oldStyle, Style newStyle)
   at System.Windows.StyleHelper.UpdateStyleCache(FrameworkElement fe, FrameworkContentElement fce, Style oldStyle, Style newStyle, Style& styleCache)
   at System.Windows.FrameworkElement.OnStyleChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp, Boolean preserveCurrentValue)
   at System.Windows.FrameworkElement.UpdateStyleProperty()
   at System.Windows.FrameworkElement.InvalidateTreeDependentProperties(TreeChangeInfo parentTreeState, Boolean isSelfInheritanceParent, Boolean wasSelfInheritanceParent)
   at System.Windows.FrameworkElement.OnAncestorChangedInternal(TreeChangeInfo parentTreeState)
   at System.Windows.TreeWalkHelper.OnAncestorChanged(DependencyObject d, TreeChangeInfo info, Boolean visitedViaVisualTree)
   at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d, Boolean visitedViaVisualTree)
   at MS.Internal.PrePostDescendentsWalker`1._VisitNode(DependencyObject d, Boolean visitedViaVisualTree)
   at System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren)
   at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren)
   at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d)
   at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d, Boolean visitedViaVisualTree)
   at MS.Internal.PrePostDescendentsWalker`1._VisitNode(DependencyObject d, Boolean visitedViaVisualTree)
   at System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren)
   at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren)
   at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d)
   at System.Windows.DescendentsWalker`1.StartWalk(DependencyObject startNode, Boolean skipStartNode)
   at MS.Internal.PrePostDescendentsWalker`1.StartWalk(DependencyObject startNode, Boolean skipStartNode)
   at System.Windows.TreeWalkHelper.InvalidateOnTreeChange(FrameworkElement fe, FrameworkContentElement fce, DependencyObject parent, Boolean isAddOperation)
   at System.Windows.FrameworkElement.OnVisualParentChanged(DependencyObject oldParent)
   at System.Windows.Media.Visual.FireOnVisualParentChanged(DependencyObject oldParent)
   at System.Windows.Media.Visual.RemoveVisualChild(Visual child)
   at System.Windows.Media.VisualCollection.DisconnectChild(Int32 index)
   at System.Windows.Media.VisualCollection.RemoveRange(Int32 index, Int32 count)
   at System.Windows.Controls.UIElementCollection.RemoveRangeInternal(Int32 index, Int32 count)
   at System.Windows.Controls.Panel.OnItemsChangedInternal(Object sender, ItemsChangedEventArgs args)
   at System.Windows.Controls.Panel.OnItemsChanged(Object sender, ItemsChangedEventArgs args)
   at System.Windows.Controls.ItemContainerGenerator.OnItemRemoved(Object item, Int32 itemIndex)
   at System.Windows.Controls.ItemContainerGenerator.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)
   at System.Windows.WeakEventManager.ListenerList`1.DeliverEvent(Object sender, EventArgs e, Type managerType)
   at System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args)
   at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
   at System.Windows.WeakEventManager.ListenerList`1.DeliverEvent(Object sender, EventArgs e, Type managerType)
   at System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args)
   at System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
   at MS.Internal.Controls.InnerItemCollectionView._RemoveAt(Int32 index, Int32 indexR, Object item)
   at System.Windows.Controls.ItemCollection.Remove(Object removeItem)

GridView

asked on 21 Feb 2022

1 answer

524 views

Telerik nuget manager doesnot provide latest releases

Hi,

I have developer license for Telerik UI for WPF which was purchased this week. But when i try and search for specific controls i do not get the latest builds displayed.

I have attached the screenshot where it shows only version 2020.1.218 even though there is a new release in 2022.

And also why does it show only Trial and not the actual package.

Installer and Visual Studio Extensions

Licensing

answered on 21 Feb 2022

1 answer

99 views

ErrorBars on ScatterPointSeries

Hello Telerik Team,

I was wondering how one would implement error bars in a ScatterPointSeries that look similar to this: https://demos.telerik.com/kendo-ui/line-charts/error-bars

There is a very similar question that has been asked before (https://www.telerik.com/forums/how-to-plot-error-bar-for-standard-deviation). Unfortunately, it doesn't look like the feature request mentioned there is going to be implemented anytime soon. As a workaround it was suggested to use a RangeBarSeries with a custom PointTemplate, but that will not work for me, since it is a Cathegorical series and I need to plot the data points at any arbitrary xy coordinate, which is my reason to use the ScatterPointSeries.

I was researching further and found someone mentioning a custom renderer but it seems that is only applicable for windows forms.

I also found this site https://docs.telerik.com/devtools/wpf/controls/radchart/how-to/howto-create-scatter-errorbars-and-boxplot-series but it seems to only work for RadChart and not RadCartesianChart.

Any pointers in the right direction would be greatly appreciated.

Best Regards,
Robin

ChartView

General Discussions

answered on 21 Feb 2022

1 answer

118 views

Popup Filtering with Search

Hi,

It is possible for Popup Filtering to have the same behavior as for winforms and excel, which when typing in the textbox already filtered the list. As per attached image.

Thanks.

GridView

answered on 21 Feb 2022

1 answer

120 views

Document host and SplitContainer styles

Hi,
I have a RadDocking with a Document.host and 2 RadSplitcontainer. Every parts of control has its own Header and they are shown correctly, but with different style as you could see in figure:

I haven't seen any settings in xaml about the style and I would like to use everywhere the left style.

This is the DataTemplate used:

<DataTemplate x:Key="{x:Static r:ResourcesKeys.TabContentSpectral}" DataType="WpfPlot">
				<t:ProportionalStackPanel Orientation="Vertical">
					<t:RadToolBar t:ProportionalStackPanel.ElementHeight="32">
						<t:RadButton Command="{Binding ResetCommand}"									 
							ToolTip="{DynamicResource ResourceKey={x:Static r:ResourcesKeys.ResetMapTooltip}}">
							<Image Source="/DeltaOhm.NsModules;component/Images/refresh.png"
																		   Style="{StaticResource ResourceKey=TreeviewImageSize}"/>
						</t:RadButton>
						<t:RadButton x:Name="ToolbarSetAxisScale"
							ToolTip="{DynamicResource ResourceKey={x:Static r:ResourcesKeys.MISetAxisScale}}"
							Loaded="ToolbarSetAxisScale_Loaded">
							<Image Source="/DeltaOhm.NsModules;component/Images/ToolbarSetAxisScale.png"
																		   Style="{StaticResource ResourceKey=TreeviewImageSize}"/>
						</t:RadButton>
						<t:RadButton
							ToolTip="{DynamicResource ResourceKey={x:Static r:ResourcesKeys.ColorPaletteTooltip}}"
							Loaded="RadPathButton_Loaded">
							<Image Source="/DeltaOhm.NsModules;component/Images/ToolbarColorPalette.png"
																		   Style="{StaticResource ResourceKey=TreeviewImageSize}"/>
						</t:RadButton>
						<t:RadButton
							x:Name="SonogrammaMinimi"
							ToolTip="{DynamicResource ResourceKey={x:Static r:ResourcesKeys.SonogrammaDeiMinimiTooltip}}"
							Command="{Binding CalcolaSpettroDeiMinimiCommand}">
							<Image Source="/DeltaOhm.NsModules;component/Images/SonogrammaDeiMinimi.png"
																		   Style="{StaticResource ResourceKey=TreeviewImageSize}"/>
						</t:RadButton>
					</t:RadToolBar>
					<t:RadDocking x:Name="DockingSpectral"
						RetainPaneSizeMode="DockingAndFloating">
						<t:RadDocking.DocumentHost>
							<t:RadPaneGroup x:Name="RadPaneGroup1">
								<t:RadPane x:Name="PaneSpectralColorMap" t:RadDocking.SerializationTag="PaneSpectralColorMap" 
										   Loaded="PaneSpectralColorMap_Loaded">
									<Grid x:Name="Grid1">
										<local:SpectralColorMapControl Loaded="SpectralColorMapControl_Loaded" TabIndex="0"
													   SizeChanged="SpectralColorMapControl_SizeChanged"/>
									</Grid>
								</t:RadPane>
							</t:RadPaneGroup>
						</t:RadDocking.DocumentHost>
						<t:RadSplitContainer
							x:Name="SpectralTimeHistory" InitialPosition="DockedBottom"
											 MinHeight="180">
							<t:RadPaneGroup >
								<t:RadPane x:Name="PaneSpectralTimeHistory" t:RadDocking.SerializationTag="PaneSpectralTimeHistory"
										   Loaded="PaneSpectralTimeHistory_Loaded">
									<Grid>
										<local:SpectralTimeHistoryControl TabIndex="1"
											Loaded="SpectralTimeHistoryControl_Loaded"	
											Frequency="{Binding FrequencySelected, Mode=TwoWay}"/>
									</Grid>
								</t:RadPane>
							</t:RadPaneGroup>
						</t:RadSplitContainer>
						<t:RadSplitContainer x:Name="SpectralHistogram" InitialPosition="DockedRight"
											 MinWidth="225">
							<t:RadPaneGroup x:Name="RadPaneGroup2">
								<t:RadPane x:Name="PaneSpectralHistogram" t:RadDocking.SerializationTag="PaneSpectralHistogram"
										   Loaded="PaneSpectralHistogram_Loaded">
									<Grid x:Name="Grid2">
										<local:SpectralHistogramControl x:Name="SpectralHistogramControl1"
											Loaded="SpectralHistogramControl_Loaded"
											TimeStamp="{Binding MainVM.TabCursori.CursorV0DT, Mode=TwoWay}"
											Intervallo="{Binding MainVM.TabCursori.CursorRange}"/>
									</Grid>
								</t:RadPane>
							</t:RadPaneGroup>
						</t:RadSplitContainer>
					</t:RadDocking>
				</t:ProportionalStackPanel>
			</DataTemplate>

And this is the code that binding the header (in code behind because "Plot" is a dynamic value)

		private void PaneSpectralColorMap_Loaded(object sender, RoutedEventArgs e)
		{
			if (sender is RadPane pane)
			{
				pane.SetBinding(HeaderedContentControl.HeaderProperty, new Binding("Plot.SpectralColorMapVM.Title"));
			}
		}
		private void PaneSpectralTimeHistory_Loaded(object sender, RoutedEventArgs e)
		{
			if (sender is RadPane pane)
			{
				pane.SetBinding(HeaderedContentControl.HeaderProperty, new Binding("Plot.SpectralProfileVM.Title"));
			}
		}
		private void PaneSpectralHistogram_Loaded(object sender, RoutedEventArgs e)
		{
			if (sender is RadPane pane)
			{
				pane.SetBinding(HeaderedContentControl.HeaderProperty, new Binding("Plot.SpectralHistogramVM.Title"));
			}

		}

Docking

Styling

answered on 21 Feb 2022

1 answer

193 views

Popup Filtering Opacity in Grid WPF

Hi,

When using the Fluent theme on computers with Windows 7, the opacity of Popup Filtering interferes with its visualization, as shown in the attached image. Is it possible to change the global shape of this opacity to avoid this problem?

Thanks

GridView