Questions on UI for WPF Forum

3 answers

187 views

Jira like filter

Does GridView support jira like filter?

like the link below

https://jira.atlassian.com/secure/SessionNavigator.jspa

GridView

answered on 09 Aug 2016

2 answers

118 views

Void UpdateContentPresenter throws a NRE after an attempt to assign any presenter to it

Hello Telerik team!

I get the following exception when I try to assign a presenter to RadPdfViewer.FixedDocumentPresenter field:

System.NullReferenceException was unhandled
HResult=-2147467261
Message=Ссылка на объект не указывает на экземпляр объекта.
Source=Telerik.Windows.Controls.FixedDocumentViewers
StackTrace:
       Telerik.Windows.Controls.FixedDocumentViewerBase.UpdateContentPresenter(IFixedDocumentPresenter presenter)
        Telerik.Windows.Controls.FixedDocumentViewerBase.InitializeFixedDocumentPresenter(IFixedDocumentPresenter releasedPresenter, IFixedDocumentPresenter presenter)
        Telerik.Windows.Controls.FixedDocumentViewerBase.set_FixedDocumentPresenter(IFixedDocumentPresenter value)

...Internal app methods...
InnerException:

Steps before the exception:

<code>

pdfStream = new MemoryStream();
byte[] pdfCashe = File.ReadAllBytes(_pageView.LocalImagePath);
var ms = new MemoryStream(pdfCashe);
pdfViewer.DocumentSource = new PdfDocumentSource(ms);

...

pdfViewer.FixedDocumentPresenter =
pdfViewer.GetRegisteredPresenter(FixedDocumentPresenterNames.FixedDocumentSinglePageViewPresenter);

</code>

pdfViewer - RadPdfViewer initialized in XAML

_pageView.LocalImagePath is a string containing a path to the pdf file

The "DocumentSource" field of the viewer is not null, a "Document" field inside is null.

What could be the cause? The creation of a new FixedDocumentSinglePageViewPresenter itself completes successfully.

I use 2015.3.1104.40 Telerik libraries.

Thank you in advance!

PDFViewer

answered on 09 Aug 2016

13 answers

559 views

Can I build dynamically-changing RadCartesianChart with line series using RadChartView ?

Hi! I'going to use RadChartView for displaying of dynamically-built RadCartesianChart with line series. I have a timer in my application. With each timer's tick I read the new value of register 'A' from outer device via serial port. After I obtain this new value I must:

Move the previously plotted data points to the left on one unit interval on X axis,
Plot the new data point on the right age of X axis in accordance with its Y axis coordinate value,
Connect the new point with the previouse last point with the segment of a straight line.

Thus the chart dynamically builds and moves from left to right. Please see 'SignalChart.PNG' file attached.

Since this morning (no is 5:02 PM), I climbed on a forum dedicated to RadChartView but did not find anything significant about my question. So I decided to write this my post. Is it possible to build such a dynamically-changing chart in RadChartView? I would be very grateful if you give me an example of plotting of such dynamic chart.

ChartView

answered on 09 Aug 2016

4 answers

276 views

Tooltip NullreferenceException

Hi,

We are seeing an unhandled exception every so often when viewing tooltips on a PivotGrid. Can anyone please help? Below is the tooltip style and stacktrace.

Thank you.

<Style x:Key="CellToolTipStyle" TargetType="ToolTip">

<Setter Property="ContentTemplate">

<Setter.Value>

<DataTemplate>

<TextBlock>

<Run Text="{Binding Data.RowGroup.Name.DisplayName, StringFormat='Buckets in ({0})', Mode=OneWay}" FontWeight="Bold"/>

<LineBreak/>

<Run Text="{Binding Data, StringFormat='Value: {0}', Mode=OneWay}"/>

<LineBreak/>

<Run Text="{Binding Data.RowGroup, StringFormat='Row: {0}', Mode=OneWay}"/>

<LineBreak/>

<Run Text="{Binding Data.ColumnGroup, StringFormat='Column: {0}', Mode=OneWay}"/>

</TextBlock>

</DataTemplate>

</Setter.Value>

</Setter>

</Style>

System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.Pivot.Core.CellAggregateValue.GetHashCode()
   at System.Collections.Hashtable.get_Item(Object key)
   at System.ComponentModel.TypeDescriptor.NodeFor(Object instance, Boolean createDelegator)
   at System.ComponentModel.TypeDescriptor.GetDescriptor(Object component, Boolean noCustomTypeDesc)
   at System.ComponentModel.TypeDescriptor.GetPropertiesImpl(Object component, Attribute[] attributes, Boolean noCustomTypeDesc, Boolean noAttributes)
   at System.Windows.PropertyPath.ResolvePropertyName(String name, Object item, Type ownerType, Object context, Boolean throwOnError)
   at System.Windows.PropertyPath.ResolvePropertyName(Int32 level, Object item, Type ownerType, Object context)
   at MS.Internal.Data.PropertyPathWorker.GetInfo(Int32 k, Object item, SourceValueState& svs)
   at MS.Internal.Data.PropertyPathWorker.ReplaceItem(Int32 k, Object newO, Object parent)
   at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue, Boolean isASubPropertyChange)
   at MS.Internal.Data.ClrBindingWorker.AttachDataItem()
   at System.Windows.Data.BindingExpression.Activate(Object item)
   at System.Windows.Data.BindingExpression.HandlePropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
   at System.Windows.Data.BindingExpressionBase.OnPropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
   at System.Windows.Data.BindingExpression.OnPropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
   at System.Windows.DependentList.InvalidateDependents(DependencyObject source, DependencyPropertyChangedEventArgs sourceArgs)
   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.TreeWalkHelper.OnInheritablePropertyChanged(DependencyObject d, InheritablePropertyChangeInfo info, Boolean visitedViaVisualTree)
   at System.Windows.DescendentsWalker`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 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 System.Windows.TreeWalkHelper.InvalidateOnInheritablePropertyChange(FrameworkElement fe, FrameworkContentElement fce, InheritablePropertyChangeInfo info, Boolean skipStartNode)
   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.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
   at System.Windows.Controls.ContentPresenter.OnContentChanged(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.InvalidateDependents(Style ownerStyle, FrameworkTemplate frameworkTemplate, DependencyObject container, DependencyProperty dp, FrugalStructList`1& dependents, Boolean invalidateOnlyContainer)
   at System.Windows.StyleHelper.OnTriggerSourcePropertyInvalidated(Style ownerStyle, FrameworkTemplate frameworkTemplate, DependencyObject container, DependencyProperty dp, DependencyPropertyChangedEventArgs changedArgs, Boolean invalidateOnlyContainer, FrugalStructList`1& triggerSourceRecordFromChildIndex, FrugalMap& propertyTriggersWithActions, Int32 sourceChildIndex)
   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.Data.BindingExpressionBase.Invalidate(Boolean isASubPropertyChange)
   at System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)
   at System.Windows.Data.BindingExpression.Activate(Object item)
   at System.Windows.Data.BindingExpression.HandlePropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
   at System.Windows.Data.BindingExpressionBase.OnPropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
   at System.Windows.Data.BindingExpression.OnPropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
   at System.Windows.DependentList.InvalidateDependents(DependencyObject source, DependencyPropertyChangedEventArgs sourceArgs)
   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.TreeWalkHelper.InvalidateTreeDependentProperty(TreeChangeInfo info, DependencyObject d, FrameworkObject& fo, DependencyProperty dp, FrameworkPropertyMetadata fMetadata, Style selfStyle, Style selfThemeStyle, ChildRecord& childRecord, Boolean isChildRecordValid, Boolean hasStyleChanged, Boolean isSelfInheritanceParent)
   at System.Windows.TreeWalkHelper.InvalidateTreeDependentProperties(TreeChangeInfo info, FrameworkElement fe, FrameworkContentElement fce, Style selfStyle, Style selfThemeStyle, ChildRecord& childRecord, Boolean isChildRecordValid, Boolean hasStyleChanged, Boolean isSelfInheritanceParent)
   at System.Windows.FrameworkElement.InvalidateTreeDependentProperties(TreeChangeInfo parentTreeState, Boolean isSelfInheritanceParent)
   at System.Windows.FrameworkElement.OnAncestorChangedInternal(TreeChangeInfo parentTreeState)
   at System.Windows.TreeWalkHelper.OnAncestorChanged(DependencyObject d, TreeChangeInfo info, 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 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.Controls.Primitives.Popup.CreateWindow(Boolean asyncCall)
   at System.Windows.Controls.Primitives.Popup.OnIsOpenChanged(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.Data.BindingExpressionBase.Invalidate(Boolean isASubPropertyChange)
   at System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)
   at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue, Boolean isASubPropertyChange)
   at MS.Internal.Data.PropertyPathWorker.OnDependencyPropertyChanged(DependencyObject d, DependencyProperty dp, Boolean isASubPropertyChange)
   at System.Windows.Data.BindingExpression.HandlePropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
   at System.Windows.Data.BindingExpressionBase.OnPropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
   at System.Windows.Data.BindingExpression.OnPropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
   at System.Windows.DependentList.InvalidateDependents(DependencyObject source, DependencyPropertyChangedEventArgs sourceArgs)
   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.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
   at System.Windows.Controls.PopupControlService.RaiseToolTipOpeningEvent()
   at System.Windows.Controls.PopupControlService.InspectElementForToolTip(DependencyObject o)
   at System.Windows.Controls.PopupControlService.OnPostProcessInput(Object sender, ProcessInputEventArgs e)
   at System.Windows.Input.InputManager.RaiseProcessInputEventHandlers(ProcessInputEventHandler postProcessInput, ProcessInputEventArgs processInputEventArgs)
at System.Windows.Input.InputManager.ProcessStagingArea()
   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 MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

PivotGrid

answered on 08 Aug 2016

1 answer

1.8K+ views

GroupBox has a double line border when it is used as a content for RadExapander?

GroupBox border has a double line border whenever it is used as a Content for RadExpander element (Please see the attached file). I want it to be only one line border.

Below is the RadExpander style and the XAML used for both RadExpander and GroupBox:

<Style TargetType="telerik:RadExpander" BasedOn="{StaticResource RadExpanderStyle}">

<Setter Property="Background" Value="#FF3D3D3D" />

<Setter Property="BorderBrush" Value="#FF575859" />

<Setter Property="BorderThickness" Value="1" />

<Setter Property="Margin" Value="5" />

<Setter Property="Padding" Value="5" />

<Setter Property="IsExpanded" Value="True" />

<Setter Property="VerticalAlignment" Value="Top" />

<Setter Property="ExpandDirection" Value="Down" />

</Style>

<telerik:RadExpander Grid.Row="4" >

<telerik:RadExpander.Content>

<GroupBox BorderThickness="1" Margin="0,0,5,5" BorderBrush="Black">

<GroupBox.Header>

<TextBlock x:Name="ProfileName"/>

</GroupBox.Header>

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="*"/>

</Grid.ColumnDefinitions>

<telerik:RadButton x:Name="btnLoad" Grid.Column="1" Width="90" Height="25" />

<telerik:RadButton x:Name="btnSave" Grid.Column="0" Width="90" Height="25" />

</Grid>

</GroupBox>

</telerik:RadExpander.Content>

</telerik:RadExpander>

Expander

answered on 08 Aug 2016

1 answer

585 views

Reorder RadListBox

I am trying to implement a RadListBox that allows users to reorder the items within itself. While I have found some old examples of this as well as the sdk examples, I keep getting the following error when I include the ItemContainerStyle reference:

"A style intended for type 'Telerik_Windows_Controls_RadListBox_0_206042439' cannot be applied to type 'ContentPresenter'.

In my XAML, I have this:

......

<UserControl.Resources>
        <vm:AgentPreferencesViewModel x:Key="ViewModel" />
        <cnv:CheckBoxConverter x:Key="CheckBoxConverter" />
        <Style TargetType="telerik:RadListBox" x:Key="DraggableItem">
            <Setter Property="telerik:RadDragAndDropManager.AllowDrag" Value="True" />
            <Setter Property="telerik:RadDragAndDropManager.AllowDrop" Value="True" />
            <Setter Property="telerik:DragDropManager.AllowCapturedDrag" Value="True"/>
        </Style>
    </UserControl.Resources>

......

<telerik:RadListBox ItemContainerStyle="{StaticResource DraggableItem}"
                           ItemsSource="{Binding GridHeaders}"
                           DisplayMemberPath="Name"
                           Grid.Column="0"
                           Grid.Row="0"
                           Margin="20">
                <telerik:RadListBox.DragVisualProvider>
                    <telerik:ScreenshotDragVisualProvider />
                </telerik:RadListBox.DragVisualProvider>
                <telerik:RadListBox.DragDropBehavior>
                    <telerik:ListBoxDragDropBehavior AllowReorder="True" />
                </telerik:RadListBox.DragDropBehavior>
            </telerik:RadListBox>

DragAndDrop

answered on 08 Aug 2016

7 answers

639 views

Setting time range for time selector

Hi,

How can I set the time range for time selector in RadTimePicker?

User need to select time between 06:30 - 09:00 with time range 10min

Without that range, time selector looks quite messy

I tried to use DisplayDateStart and -end properties but it did not help

FrameworkElementFactory spFactory = new FrameworkElementFactory(typeof(Telerik.Windows.Controls.RadTimePicker));

spFactory.Name = "factory";

spFactory.SetValue(Telerik.Windows.Controls.RadTimePicker.TimeIntervalProperty, new TimeSpan(0, 10, 0));

spFactory.SetValue(Telerik.Windows.Controls.RadTimePicker.DisplayDateStartProperty, new DateTime() + new TimeSpan(6, 30, 0));

spFactory.SetValue(Telerik.Windows.Controls.RadTimePicker.DisplayDateEndProperty, new DateTime() + new TimeSpan(9, 0, 0));

template.VisualTree = spFactory;

template.Seal();

Regards,

Auvo

DateTimePicker

answered on 05 Aug 2016

1 answer

166 views

Access Window of modal PropertyGrid.Editor

I'm looking at your demo for the PropertyGrid Editor Attribute. MapEditorControl.xaml is a UserControl which is set as an editor in Employee.cs using

        [Telerik.Windows.Controls.Data.PropertyGrid.Editor(typeof(MapEditorControl), "Location", Telerik.Windows.Controls.Data.PropertyGrid.EditorStyle.Modal),]

        public string Location

        {

            get

            {

                return this.location;

            }

            set

            {

                if (this.location != value)

                {

                    this.location = value;

                    this.OnPropertyChanged("Location");

                }

            }

        }

However, when you run the demo the UserControl MapEditorControl sits inside another Window (see attached image). How do I access this window to set header text, icons and themes?

Based on the demo it seems I can only access the UserControl and so any implicit themes will only work from here onward and not on it's parent window.

Thanks

PropertyGrid

answered on 05 Aug 2016

1 answer

79 views

highlight several columns in one row

Hi,

i use a RadGridView, bound to an ObservableCollection<KennzahlenViewModel>. To show diviasions of different columns i use some GridViewExpressionColumns in one row. Now i want to set the forecolor red if the result is less than zero.

How can i do this?

Thanks
Best Regards

GridView

answered on 05 Aug 2016

0 answers

103 views

Changing RadMenuItem Background

Hi, I currently have a contextmenu with multiple menuitems. I'm looking to override the current menuitem styles and display a different background colour upon mouse over. May I ask how abouts do I do that?

ContextMenu

asked on 04 Aug 2016