Questions on UI for WPF Forum

12 answers

425 views

How to Saving grid settings on a per user basis

Hi

I want to know how can I Saving grid settings (Reordering of Grid Column) on a per user basis.

Regards

GridView

answered on 10 Aug 2016

18 answers

662 views

[Solved] Remove Outer TreeView Line

I am trying to remove the outer line in the treeview as you can see highlighted in the red box.

My Inner RadTreeViewItemControl Template has the following code in the ListRootContainer section regarding the lines.

<Rectangle x:Name="HorizontalLine" Stroke="{StaticResource LineBrush}" Height="1" HorizontalAlignment="Right" VerticalAlignment="Center">

<Rectangle.Clip>

<RectangleGeometry Rect="0,0,10000,1"/>

</Rectangle.Clip>

</Rectangle>

<Rectangle x:Name="VerticalLine" Stroke="{StaticResource LineBrush}" HorizontalAlignment="Center" VerticalAlignment="Top" Width="1">

<Rectangle.Clip>

<RectangleGeometry Rect="0,0,1,10000"/>

</Rectangle.Clip>

</Rectangle>

Is this possible?

Thanks
Ryan

TreeView

answered on 09 Aug 2016

4 answers

2.2K+ views

WPF GridView Change Cell Color Based on Value

hi
i have one GridView that contains Column Name "Day1", "Day2" ....to "Day31".

Now i want to change Cell Background and ForeColor Based On Value.

For All the 31 Columns
if cell value = "P" then Green Background and forecolor white.

how can i do this.
Please Help me.

GridView

answered on 09 Aug 2016

1 answer

142 views

EditorAttribute with type name (string) rather than System.Type

The EditorAttribute of the PropertyGrid currently requires the control type to be available for the class defining the attribute. In the original .NET Property Grid, the EditorAttribute supported a constructor with a string which allowed the type to be resolved at runtime rather than compile time. The TypeConverter attribute also has this type name signature available. This is particularly useful when architecting a solution where the model libraries shouldn't reference the views.

The functionality could be added with a simple constructor signature like this:

public EditorAttribute(string editorTypeName)
this(Type.GetType(editorTypeName)
{
}

PropertyGrid

answered on 09 Aug 2016

3 answers

220 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

128 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

584 views

[Solved] 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

310 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

1.9K+ 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

615 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