Questions on UI for WPF Forum

1 answer

133 views

ChartView crashes when loaded with a lot of data

[ Originally posted on the "Chart" forum but actually this issue happens with ChartView ]

I am still in the process of evaluating the Telerik WPF package. Everything was OK with the Chart component until I found this problem.
When loaded with plenty of data, the chart crashes with the following exception :
Decimal too big or too small
   at System.Decimal..ctor(Double value)
   at System.Decimal.op_Explicit(Double value)
   at Telerik.Charting.LinearAxisModel.<GenerateTicks>d__0.MoveNext()
   at Telerik.Charting.AxisModel.<Delay>d__1e`1.MoveNext()
   at Telerik.Charting.AxisModel.TryBuildNonOverlappingTicksAndLabels(Boolean buildLabels, ValueRange`1 zoomRange, Boolean allowOverlappingLabels)
   at Telerik.Charting.NumericalAxisModel.ChooseActualRange()
   at Telerik.Charting.NumericalAxisModel.BeginMeasureCore(RadSize availableSize)
   at Telerik.Charting.AxisModel.MeasureCore(RadSize availableSize)
   at Telerik.Charting.AxisModel.Measure(RadSize availableSize)
   at Telerik.Charting.NumericalAxisModel.Measure(RadSize availableSize)
   at Telerik.Charting.CartesianChartAreaModel.AxisStack.Measure(RadSize availableSize)
   at Telerik.Charting.CartesianChartAreaModel.PrepareAxesStacks(RadSize availableSize)
   at Telerik.Charting.CartesianChartAreaModel.ArrangeAxes(RadRect availableRect)
   at Telerik.Charting.ChartAreaModelWithAxes.UpdateAndArrangeAxes(SeriesByAxesTuple seriesByAxes, RadRect availableRect, RadRect& seriesRect)
   at Telerik.Charting.ChartAreaModelWithAxes.ArrangeOverride(RadRect rect)
   at Telerik.Charting.ChartNode.Arrange(RadRect rect, Boolean shouldRoundLayout)
   at Telerik.Charting.ChartAreaModel.Arrange()
   at Telerik.Windows.Controls.ChartView.RadChartBase.UpdateChartArea()
   at Telerik.Windows.Controls.ChartView.RadChartBase.CallUpdateUI()
   at Telerik.Windows.Controls.ChartView.RadChartBase.OnInvalidated()
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.DispatcherOperation.InvokeImpl()
   at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Windows.Threading.DispatcherOperation.Invoke()
   at System.Windows.Threading.Dispatcher.ProcessQueue()
   at System.Windows.Threading.Dispatcher.WndProcHook(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 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at System.Windows.Application.RunDispatcher(Object ignore)
   at System.Windows.Application.RunInternal(Window window)
   at System.Windows.Application.Run(Window window)
   at System.Windows.Application.Run()
Known problem? Any workaround?

ChartView

answered on 05 Oct 2015

1 answer

103 views

Additional controls per field in PropertyGrid

Hi,

How can I add additional controls for certain fields in a PropertyGrid? Similar to Visual Studio. See attached image.

PropertyGrid

answered on 05 Oct 2015

1 answer

1.1K+ views

RadGridView Selected Rows Appear Unselected After Lost Focus

I am using Telerik WPF Controls 2014.2.729.40.

I have enabled the multi-rows selection in the radgridview by setting SelectionMode="Extended".

<tk:RadGridView ... SelectionMode="Extended">

The user can select all or select multiple rows in the grid. However, if the user clicks out of the radgridview. The selected rows appear as unselected until the radgridview regains the focus back.

Step 1: The user selected multiple rows in radgridview.The rows looked SELECTED.

Step 2: The user clicked outside of radgridview. The rows looked UN-SELECTED.

Step 3: The user clicked back in radgridview. The rows selected before appeared as SELECTED.

I want the selected rows stay SELECTED visually all the time no matter Telerik RadGridView losts focus or not.

Please let me know if there is any ways to achieve my goal. Any help is appreciated.

Thanks!

GridView

answered on 05 Oct 2015

3 answers

120 views

Filtering DataFormComboBoxField

I am using a DataSource and a DataForm with a DataTemplate in WPF. In principle it works.
DataSource:
<telerik:RadEntityFrameworkDataSource Name="AcademicTitleDataSource" QueryName="CatalogEntries">
<telerik:RadEntityFrameworkDataSource.DbContext>
    <local:MyEntities x:Name="AcademicTitleContext" />
</telerik:RadEntityFrameworkDataSource.DbContext>
</telerik:RadEntityFrameworkDataSource>
DataFormComboBoxField:
<telerik:DataFormComboBoxField x:Name="AcademicTitleComboBox" Grid.Column="0" Grid.Row="7" Label="Titel:"
                                ItemsSource="{Binding DataView, ElementName=AcademicTitleDataSource}"
                                DataMemberBinding="{Binding AcademicTitle}"
                                SelectedValuePath="ID"
                                DisplayMemberPath="EntryName" />
Now i want to display only certain items from the CatalogEntries wherw the CatalogID = 5. How can i filtering the Data?

DataForm

answered on 03 Oct 2015

4 answers

334 views

Build a hierachy from a flat list ?

Is it possible to create a hierarchical tree list view from a flat list, much in the way you can with a TreeList ( http://docs.telerik.com/devtools/wpf/controls/radtreeview/how-to/bind-to-self-referencing-data.html ) ?

We have a data structure where the objects have the ids of their parents, and we would much rather bind to a flat list, than rebuild the hierarchy.

I had a look at the hierarchical grid view (http://docs.telerik.com/devtools/wpf/controls/radgridview/hierarchical-gridview/self-referencing-grid.html ), but that still seems to put children at the top level (as well as the child level).

TreeListView

answered on 02 Oct 2015

1 answer

371 views

Can't set IsPropertyChangedAggregationEnabled from style

I'm trying to disable property changed aggregation on all grids (the timer within it causes issues with Word when I host it in an add-in pane).

I've added a style as so:

<Style TargetType="telerik:RadGridView">

<Setter Property="IsPropertyChangedAggregationEnabled" Value="False" />

</Style>

And I get this error:

The property "IsPropertyChangedAggregationEnabled" is not a DependencyProperty. To be used in markup, non-attached properties must be exposed on the target type with an accessible instance property "IsPropertyChangedAggregationEnabled".

I think I can see why. The registration of this dependency property seems to be wrong. It includes a trailing space:

public static readonly DependencyProperty IsPropertyChangedAggregationEnabledProperty = DependencyProperty.Register("IsPropertyChangedAggregationEnabled ", typeof (bool), typeof (GridViewDataControl), new PropertyMetadata((object) true));

Can someone verify this? If it is the cause, it should be fixed!

GridView

answered on 02 Oct 2015

2 answers

221 views

[Solved] Layout behavior in RadDiagram

Hello!

I have a problem with Layout in RadDiagram. While using this example after applying Layout() method to my diagram (Sample.jpg), arrangement of layers and connections between them became very strange. Examples of applying Tree-down and Tree-up layouts are in the files TreeDown.jpg and TreeUp.jpg respectively.

Is it possible to place layers applying Layout() method, according to their connection?

Thank You!

Diagram

answered on 02 Oct 2015

1 answer

150 views

DragDropBehavior and TextBox

Hi, II have a RadListBox with an attached DragDropBehavior and a custom itemTemplate:

<telerik:RadListBox.ItemTemplate>

<DataTemplate>

<Grid>

<TextBox Text="{Binding Name}" />

</Grid>

</DataTemplate>

</telerik:RadListBox.ItemTemplate>

Technically everything works as expected, apart of the fact that reordering elements via drag&drop is nearly impossible.

Replacing the TextBox with a TextBlock fixes the issue but, of course, is not a viable option: the "Name" property should be editable...

Any advice on this?

ListBox

answered on 02 Oct 2015

3 answers

340 views

ContextMenu on RadCalendar and RadScheduleView

I want to use ContextMenu on the dates in RadCalendar so i can pick the dates and show ContextMenu using right-click, there is an issue that makes me able to right-click on header and somewhere else(but still in Calendar) and the ContextMenu also showed up. this is the code

<telerik:RadCalendar x:Name="calendar">

<telerik:RadContextMenu.ContextMenu>

<telerik:RadContextMenu Opened="RadContextMenu_Opened">

<telerik:RadMenuItem Header="Copy" />

<telerik:RadMenuItem Header="Paste" />

<telerik:RadMenuItem Header="Cut" />

</telerik:RadContextMenu>

</telerik:RadContextMenu.ContextMenu>

</telerik:RadCalendar>

private void RadContextMenu_Opened(object sender, RoutedEventArgs e)

{

var calendarButton = (sender as RadContextMenu).GetClickedElement<CalendarButton>();

if (calendarButton != null)

{

var calendarButtonContent = calendarButton.Content as CalendarButtonContent;

if (calendarButtonContent != null)

{

var clickedDate = calendarButtonContent.Date;

}

i also want to do that on RadScheduleView so i can only use the ContextMenu on the empty slots or appointment.

ContextMenu

answered on 02 Oct 2015

1 answer

184 views

GridViewCheckBoxColumn - How to change the GridViewCheckBox style in view mode

Hi ,

I have a RadGridView, and add three GridViewCheckBoxColumn in it, I want every GridViewCheckBoxColumn have different GridViewCheckBox style(not in EditorStyle ) in view mode. But i don't know how to set it. I only know how to set a common style for all three of GridViewCheckBoxColumn .

so ...can you tell me how to do it? thanks so much!

GridView

answered on 02 Oct 2015