Questions on UI for WPF Forum

6 answers

170 views

Exception when touching MaskedInput control

Hi,

We have recently updated our Telerik controls for one of our applications. The current version used is 2014.1.0224.40. What we noticed on touch devices is that exceptions are being raised when the MaskedInput control is being touched. There is no exception raised when the control is being clicked.

The exception is:
,. hexadecimal value 0x00, is an invalid character

The stacktrace:
   bij System.Xml.XmlEncodedRawTextWriter.InvalidXmlChar(Int32 ch, Char* pDst, Boolean entitize)
   bij System.Xml.XmlEncodedRawTextWriter.WriteAttributeTextBlock(Char* pSrc, Char* pSrcEnd)
   bij System.Xml.XmlEncodedRawTextWriter.WriteString(String text)
   bij System.Xml.XmlWellFormedWriter.WriteString(String text)
   bij Telerik.Windows.Automation.Peers.AutomationXmlSerializer.Serialize(IEnumerable`1 properties)
   bij Telerik.Windows.Automation.Peers.RadMaskedInputBaseAutomationPeer.GetItemStatusCore()
   bij System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
   bij System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
   bij System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
   bij System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
   bij System.Windows.ContextLayoutManager.fireAutomationEvents()
   bij System.Windows.ContextLayoutManager.UpdateLayout()
   bij System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
   bij System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork()
   bij System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
   bij System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
   bij System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
   bij System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   bij MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

When performing remote debugging sessions, we could not find the reason for this problem.

Is this a bug or did we make a mistake ?

Kind regards,
Mike Overmeijer

MaskedInput (Numeric, DateTime, Text, Currency)

answered on 20 Aug 2014

3 answers

238 views

System.NullReferenceException was caught for TreeView and RichTextBox with HtmlDataProvider

I have RadGridView:

<telerik:RadGridView AutoGenerateColumns="False" ItemsSource="{Binding Path=Works}" Grid.Column="0"

SelectionChanged="RadGridView_SelectionChanged">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Title}" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

with ItemSource bind to Works from MyData class:

public class MyData

{

public ObservableCollection<Work> Works { get; set; }

and Work is:

public class Work

{

public String Title { get; set; }

public Work(String title)

{

Title = title;

}

public List<Project> Project { get; set; }

}

On every SelectionChanged event I pass Project object From Work.Projects to MyData.Projects:

public class MyData

{

public ObservableCollection<Work> Works { get; set; }

public ObservableCollection<Project> Projects { get; set; }

This Projects ObservableCollection is bind to RadTreeView with enabled virtualization:

<telerik:RadTreeView IsVirtualizing="True"

ItemsSource="{Binding Path=Projects}" Grid.Column="1"

ItemTemplate="{StaticResource MyItemTemplate}" />

with ItemTemplate:

<DataTemplate x:Key="MyItemTemplate">

<Grid>

<telerik:HtmlDataProvider Name="HistoryNoteHtmlDataProvider"

RichTextBox="{Binding ElementName=RtbCommentNoteToRead}"

Html="{Binding Path=Name, Mode=OneWay}" />

<telerik:RadRichTextBox Name="RtbCommentNoteToRead" />

</Grid>

</DataTemplate>

When I run application I click to first row and in RadTreeView it displays projects. But on second click it thorws exception:
System.NullReferenceException was caught
HResult=-2147467261
Message=Odwołanie do obiektu nie zostało ustawione na wystąpienie obiektu.
Source=PresentationFramework
StackTrace:
       w System.Windows.Controls.ItemContainerGenerator.Remove(GeneratorPosition position, Int32 count, Boolean isRecycling)
       w System.Windows.Controls.ItemContainerGenerator.System.Windows.Controls.Primitives.IRecyclingItemContainerGenerator.Recycle(GeneratorPosition position, Int32 count)
       w Telerik.Windows.Controls.TreeView.TreeViewPanel.CleanupRange(IList children, IItemContainerGenerator generator, Int32 startIndex, Int32 count)
       w Telerik.Windows.Controls.TreeView.TreeViewPanel.CleanupContainers(Int32 firstViewport, ItemsControl itemsControl)
       w Telerik.Windows.Controls.TreeView.TreeViewPanel.MeasureOverride(Size constraint)
       w System.Windows.FrameworkElement.MeasureCore(Size availableSize)
       w System.Windows.UIElement.Measure(Size availableSize)
       w System.Windows.ContextLayoutManager.UpdateLayout()
       w System.Windows.UIElement.UpdateLayout()
       w Telerik.Windows.Documents.UI.DocumentWebLayoutPresenter.UpdateEditorLayout()
       w Telerik.Windows.Documents.UI.DocumentWebLayoutPresenter.DoOnDocumentChanged()
       w Telerik.Windows.Documents.UI.DocumentPresenterBase.OnOwnerChanged()
       w Telerik.Windows.Documents.UI.DocumentWebLayoutPresenter.OnOwnerChanged()
       w Telerik.Windows.Documents.UI.DocumentPresenterBase.set_Owner(RadRichTextBox value)
       w Telerik.Windows.Controls.RadRichTextBox.InitActiveEditorPresenter(Boolean clearTextRelatedObjectPools)
       w Telerik.Windows.Controls.RadRichTextBox.set_Document(RadDocument value)
       w Telerik.Windows.Documents.FormatProviders.DataProviderBase.UpdateDocument()
       w Telerik.Windows.Documents.FormatProviders.DataProviderBase.StringPropertyChangedCallback(DependencyObject sender, DependencyPropertyChangedEventArgs e)
       w System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       w System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       w System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
       w System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
       w System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp, Boolean preserveCurrentValue)
       w System.Windows.Data.BindingExpressionBase.Invalidate(Boolean isASubPropertyChange)
       w System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)
       w System.Windows.Data.BindingExpression.Activate(Object item)
       w System.Windows.Data.BindingExpression.OnDataContextChanged(DependencyObject contextElement)
       w System.Windows.Data.BindingExpression.HandlePropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
       w System.Windows.Data.BindingExpressionBase.OnPropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
       w System.Windows.Data.BindingExpression.OnPropertyInvalidation(DependencyObject d, DependencyPropertyChangedEventArgs args)
       w System.Windows.DependentList.InvalidateDependents(DependencyObject source, DependencyPropertyChangedEventArgs sourceArgs)
       w System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
       w System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
       w System.Windows.TreeWalkHelper.OnInheritablePropertyChanged(DependencyObject d, InheritablePropertyChangeInfo info, Boolean visitedViaVisualTree)
       w System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d, Boolean visitedViaVisualTree)
       w System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe, Boolean visitedViaVisualTree)
       w System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d, Boolean visitedViaVisualTree)
       w System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren)
       w System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren)
       w System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d)
       w System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d, Boolean visitedViaVisualTree)
       w System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe, Boolean visitedViaVisualTree)
       w System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d, Boolean visitedViaVisualTree)
       w System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren)
       w System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d)
       w System.Windows.DescendentsWalker`1.StartWalk(DependencyObject startNode, Boolean skipStartNode)
       w System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       w System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
       w System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
       w System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
       w System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
       w System.Windows.Controls.ContentPresenter.OnContentChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
       w System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       w System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       w System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
       w System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
       w System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp, Boolean preserveCurrentValue)
       w System.Windows.StyleHelper.InvalidateDependents(Style ownerStyle, FrameworkTemplate frameworkTemplate, DependencyObject container, DependencyProperty dp, FrugalStructList`1& dependents, Boolean invalidateOnlyContainer)
       w System.Windows.StyleHelper.OnTriggerSourcePropertyInvalidated(Style ownerStyle, FrameworkTemplate frameworkTemplate, DependencyObject container, DependencyProperty dp, DependencyPropertyChangedEventArgs changedArgs, Boolean invalidateOnlyContainer, FrugalStructList`1& triggerSourceRecordFromChildIndex, FrugalMap& propertyTriggersWithActions, Int32 sourceChildIndex)
       w System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       w System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
       w System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
       w System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
       w System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
       w System.Windows.Controls.ContentControl.set_Content(Object value)
       w Telerik.Windows.Controls.RadTreeViewItem.UpdateHeaderPresenterContent()
       w Telerik.Windows.Controls.RadTreeViewItem.OnHeaderChanged(Object oldHeader, Object newHeader)
       w System.Windows.Controls.HeaderedItemsControl.OnHeaderChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
       w System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       w System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       w System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
       w System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
       w System.Windows.DependencyObject.ClearValueCommon(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata)
       w System.Windows.DependencyObject.ClearValue(DependencyProperty dp)
       w Telerik.Windows.Controls.RadTreeView.ClearDependencyProperties(RadTreeViewItem treeViewItem, Object item)
       w Telerik.Windows.Controls.RadTreeView.ClearContainerForDescendant(DependencyObject element, Object item)
       w Telerik.Windows.Controls.RadTreeView.ClearContainerForItemOverride(DependencyObject element, Object item)
       w System.Windows.Controls.ItemsControl.MS.Internal.Controls.IGeneratorHost.ClearContainerForItem(DependencyObject container, Object item)
       w System.Windows.Controls.ItemContainerGenerator.UnlinkContainerFromItem(DependencyObject container, Object item, IGeneratorHost host)
       w System.Windows.Controls.ItemContainerGenerator.RemoveAllInternal(Boolean saveRecycleQueue)
       w System.Windows.Controls.ItemContainerGenerator.System.Windows.Controls.Primitives.IItemContainerGenerator.RemoveAll()
       w System.Windows.Controls.ItemContainerGenerator.OnRefresh()
       w System.Windows.Controls.ItemContainerGenerator.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)
       w System.Windows.WeakEventManager.ListenerList`1.DeliverEvent(Object sender, EventArgs e, Type managerType)
       w System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args)
       w System.Collections.Specialized.CollectionChangedEventManager.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)
       w System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
       w System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
       w System.Windows.Controls.ItemCollection.OnViewCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
       w System.Windows.WeakEventManager.ListenerList`1.DeliverEvent(Object sender, EventArgs e, Type managerType)
       w System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args)
       w System.Collections.Specialized.CollectionChangedEventManager.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)
       w System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
       w System.Windows.Data.ListCollectionView.RefreshOverride()
       w System.Windows.Data.CollectionView.RefreshInternal()
       w System.Windows.Data.CollectionView.RefreshOrDefer()
       w System.Windows.Data.ListCollectionView.ProcessCollectionChanged(NotifyCollectionChangedEventArgs args)
       w System.Windows.Data.CollectionView.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)
       w System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
       w System.Collections.ObjectModel.ObservableCollection`1.ClearItems()
       w System.Collections.ObjectModel.Collection`1.Clear()
       w TestTelerikWpfApp.MainWindow.RadGridView_SelectionChanged(Object sender, SelectionChangeEventArgs e) w d:\Users\ppiechnik\Documents\Visual Studio 2012\Projects\TestTelerikWpfApp\TestTelerikWpfApp\MainWindow.xaml.cs:wiersz 34
InnerException:

Disabling virtualization makes no occurrence of this exception.

TreeView

answered on 20 Aug 2014

3 answers

203 views

Small values get converted to scientific notation

I am importing a blank .xlsx file in spreadsheet control to enter data and later read the data from ActiveWorksheet and save it somewhere.

The issue that I am facing is: In the ActiveWorksheet cells, when entering a number that is less than .0001 changes the representation of that number to scientific notation in the cell.
I would like to keep the format as entered, i.e. .00005 stays .00005 and not 5E05.

Would appreciate quick help with this.
Thanks.

Spreadsheet

answered on 20 Aug 2014

2 answers

120 views

RadPanelBar

Hi,

I have 2 problems with this radpanelbar, I attached two images, in the first image, I have a problem that when I want to expand one of my items, it will stretch to the bottom of the page, and it is not nice at all.

I also have a problem with my scrollviewer, I want to set a windows 8 theme, but I do not know how I can do it.

I have set styles for scrollviewer, radpanelbar and also radpanelbaritems.

can anyone help me to resolve these problems? Thanks in advance.

General Discussions

answered on 20 Aug 2014

1 answer

164 views

RadDataFilter: Hide logical operator

Hi,

Is there a way to hide the logical operator in "Root Operator" (as circled in red in attached picture) when only one filter descriptor is added at the moment?

Hope to hear from you soon.

Thanks

DataFilter

answered on 20 Aug 2014

2 answers

92 views

Bind name of a RadTileViewItem

I am using telerik RadTileView control. I had to create a template to stick it to ContentTemplate. This has a ItemSource bound to ObservableCollection.

<Window.Resources>

<DataTemplate x:Key="tileHeaderTemplate">

<StackPanel Orientation="Horizontal">

<TextBlock HorizontalAlignment="Center" Text="{Binding Name}"></TextBlock>

<Button x:Name="btnCloseTileItem" HorizontalAlignment="Right" Content="X" Click="btnCloseTileItem_Click"></Button>

</StackPanel>

</DataTemplate>

<DataTemplate x:Key="TabItemTemplate">

<Grid>

......

Some controls here

</Grid>

</DataTemplate>

</Window.Resources>

<telerik:RadTileView x:Name="SelectedTablesTile" ColumnsCount="3" ColumnWidth="*" ItemTemplate="{StaticResource tileHeaderTemplate}" ItemsSource="{Binding FinalTablesCollection}" ContentTemplate="{StaticResource TabItemTemplate}" IsAutoScrollingEnabled="True" IsDockingEnabled="True" IsVirtualizing="True" MinimizedColumnWidth="150" MinimizedRowHeight="150" PreservePositionWhenMaximized="True" RowHeight="150" TileStateChangeTrigger="SingleClick" AllowDrop="False" Grid.Row="0">

</telerik:RadTileView>

I am not able to understand as to how I can bind the name of the RadTileViewItem.

TileView

answered on 19 Aug 2014

4 answers

144 views

Workaround for HTML not supporting merge codes

According to both of these links:
http://www.telerik.com/community/forums/wpf/richtextbox/mailmerge-export-to-html.aspx
http://www.telerik.com/community/forums/silverlight/richtextbox/mail-merge-and-export-as-html-with-merged-tags.aspx

Merge codes are not supported in HTML. These are over a year old now. Will this change? If not, how can I programatically process a document to fix this?

RichTextBox

answered on 19 Aug 2014

5 answers

471 views

Using ItemsControl with ExtendedDataConverter

I am creating a ToolTipTemplate in code based on this previous thread:
http://www.telerik.com/forums/programmtically-changing-mapshapereader-tooltip-when-using-a-custom-template

That works. However, the underlying MapShapeData represents information from an unknown number of values. Example:

Value 1

or maybe:

Value 1
Value 2
Value 3

etc.

Is it possible to bind an ItemsControl to list all these values without knowing in advance how many there are?

Map

answered on 19 Aug 2014

2 answers

147 views

Expand hierarchy on mouse enter

I'm looking for a way to define a mouse enter event for the expand button on a hierarchy gridview. I have nested grids and a drag and drop functionality. I want to be able to start dragging and then mouse over the + and expand another row to drop into the child gridview. Is this a possibility?

GridView

answered on 19 Aug 2014

1 answer

586 views

Cannot set both DisplayMemberPath and ItemTemplate

I undestend that you some how with internal buisness logic set TextSearch.TextPath if developer set DisplayMemberPath value with ItemTemplate.
How you do it that with runtime code example?

I inherited your RadCombobox class

class EditComboBox : RadCombobox {
}

<Grid>
<controls:EditComboBox x:Name="ecbControl" telerik:TextSearch.TextPath="Description" />
</Grid>

How to dinamicly set
MyEditComboBox.TextSearch.TextPath="Description" ?

Here is my property

private static readonly DependencyProperty CurrentDisplayMemberPathProperty = DependencyProperty.RegisterAttached("CurrentDisplayMemberPath", typeof(string), typeof(EditComboBoxUserControl), new FrameworkPropertyMetadata(OnCurrentDisplayMemberPath));

private static void OnCurrentDisplayMemberPath(DependencyObject d, DependencyPropertyChangedEventArgs e)

{

var view = (d as EditComboBoxUserControl);

if (view == null)

return;

string value = (string)e.NewValue;

view.CurrentDisplayMemberPath = value;

}

[DefaultValue("")]

[Localizability(LocalizationCategory.Text)]

[Bindable(true)]

public string CurrentDisplayMemberPath