Questions on UI for WPF Forum

1 answer

826 views

Hello, I have got Window with modalWindow.
I face issue.
When I am opening the modal window and after clicking on iconApp on taskbar, modal window is disappears and I can't do anything with my app (only end app in task manager). See attached files

I created the mainWindow by this way.

<t:RadWindow

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:t="http://schemas.telerik.com/2008/xaml/presentation"

xmlns:n="clr-namespace:Telerik.Windows.Controls.Navigation;assembly=Telerik.Windows.Controls.Navigation"

n:RadWindowInteropHelper.ShowInTaskbar="True"

x:Class="SOme.Some.MainWindow"

t:StyleManager.Theme="Metro"

MinHeight="480" MinWidth="800" Height="650" Width="1024"

WindowStartupLocation="CenterScreen"

xmlns:vm="clr-namespace:someName">

.....

</t:RadWindow>

in CS code I call method as

var mainWindow = new MainWindow();

mainWindow.Show();

I created a modal window in exactly the same way.

<t:RadWindow x:Class="Some.Some.SomeWindow"

xmlns:t="http://schemas.telerik.com/2008/xaml/presentation"

t:StyleManager.Theme="Metro"

WindowStartupLocation="CenterScreen"

CanMove="False"

CanClose="False"

ResizeMode="NoResize"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

...

</t:RadWindow>

and call following method

var mainWindow = new NewClientWindow();

mainWindow.ShowDialog();

I'm doing something wrong or this is a bug?
Thank you.

I use the following code to show the icon in the system tray (taskbar).

xmlns:n="clr-namespace:Telerik.Windows.Controls.Navigation;assembly=Telerik.Windows.Controls.Navigation"

n:RadWindowInteropHelper.ShowInTaskbar="True"

Is there any best way?

Window

answered on 19 Nov 2012

1 answer

146 views

Exception: ArgumentOutOfRangeException in RadSparkline

I am binding a RadSparkline against an INotifyCollectionChanged object. This object is NOT an ObservableCollection<>. It is raising CollectionChanged, with Action: Add, with StartingIndex as -1. This should be allowed when the collection is unordered, as mine is. However, RadSparkline is throwing an exception:

ArgumentOutOfRangeException Index must be within the bounds of the List.
at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
at System.Collections.Generic.List`1.Insert(Int32 index, T item)
at Telerik.Windows.Controls.ProjectedView`1.ObservableSourceListCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\DataVisualization\Common\DataProjection\ProjectedView.cs:line 179

I am going to solve this problem by making a temporary ObservableCollection, and adding new items to the end of it as they arrive. However, this should not be required.

Sparkline

answered on 19 Nov 2012

3 answers

130 views

Property definitions on subset of a varying class' properties

Hi
I would like to use a single property grid to present a class that is selectable by a user. Also, I want to control what properties are presented for each class. To be more specific, I have currently five tables in SQL Server that are mapped using OpenAccessORM. In the future the number of tables may increase so I would only want to update the entity model component. I want the user to be able to select which table they want to view in the propertygrid and I also want to limit the columns of each table that are presented in the propertygrid.

With regards to the subset of properties, is there a way to use AutogeneratePropertyDefinitions="True" for a subset of columns? If not, would I have to add the property definitions I want to present in code rather than XAML?

To be able to use a single property grid, would I need to use DynamicObject?

I'm using RadControls Q3 (2012.03.1017) and OpenaccessORM Q3 (2012.03.1012).

Regards
Craig

PropertyGrid

answered on 19 Nov 2012

1 answer

115 views

Custom appointment property and UI update

Dear Telerik Team!

I use custom appointment which inherits from EntityObject. What I want to achieve is to place a button on an appointment, so I placed following code on the custom appointment template:

<Button Grid.Column="0" Grid.Row="1" Content="{Binding Appointment.Approved}" Width="50" Height="50" prism:Click.CommandParameter="{Binding Appointment.Id}" prism:Click.Command=

"{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}, Path=DataContext.TaskApprovalCommand}"

/>

I'm able to click the button and execute its command, but when I change "Approved" property the UI is not updating. When I try to bind the content of the button to some other property, like "Subject" it is working fine. The problem is with custom properties, the ones which are not part of original appointment class. Could you please suggest some solution for that problem? I'd be very grateful.

Many thanks and best regards
Krzysztof Kaźmierczak

ScheduleView

answered on 19 Nov 2012

5 answers

155 views

NullReferenceException when adding a Bollinger Band indicator to the chart

Hi,

I'm using Telerik RadControls Q3 2012. After the update, I plan to add a Bollinger Band to a ChartView. However, after several trials, it always hangs the application by System.NullReferenceException: Object reference not set to an instance of an object.

The ChartView I'm using is a simple LineSeries chart in XAML:

<telerik:RadCartesianChart Margin="5" Grid.Column="0" x:Name="PriceChart" Padding="0,0,0,0">

<telerik:RadCartesianChart.HorizontalAxis>

<telerik:DateTimeContinuousAxis LabelFormat="d-MMM-yy"

MajorStep="1"

MajorStepUnit="Month"

GapLength="0.8"

PlotMode="OnTicks"

/>

</telerik:RadCartesianChart.HorizontalAxis>

<telerik:RadCartesianChart.VerticalAxis>

<telerik:LinearAxis BorderBrush="DimGray" BorderThickness="0.5" />

</telerik:RadCartesianChart.VerticalAxis>

<telerik:RadCartesianChart.Series>

<chartView:LineSeries ItemsSource="{Binding ChartData}"

CategoryBinding="Date"

ValueBinding="Price"

Stroke="Black"

StrokeThickness="0.5"/>

</telerik:RadCartesianChart.Series>

<telerik:RadCartesianChart.Grid>

<telerik:CartesianChartGrid MajorLinesVisibility="Y"/>

</telerik:RadCartesianChart.Grid>

</telerik:RadCartesianChart>

This is how I add the Bollinger Band to the chart:

LineSeries lineSeries = this.PriceChart.Series[0] as LineSeries;

if ((lineSeries != null) && (lineSeries.ItemsSource != null))

{

BollingerBandsIndicator indicator = new BollingerBandsIndicator();

indicator.Period = 5;

indicator.StandardDeviations = 2;

indicator.CategoryBinding = lineSeries.CategoryBinding;

indicator.ValueBinding = lineSeries.ValueBinding;

indicator.ItemsSource = lineSeries.ItemsSource;

indicator.Stroke = Brushes.Red;

indicator.LowerBandStroke = Brushes.Red;

indicator.StrokeThickness = 1;

this.PriceChart.Indicators.Add(indicator);

}

And this is the StackTrace for the Exception caught:

at

Telerik.Windows.Controls.ChartView.BollingerBandsIndicatorDataSource.BindCore()

in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\DataBinding\DataSources\Financial\BollingerBandsIndicatorDataSource.cs:line

63 at

Telerik.Windows.Controls.ChartView.ChartSeriesDataSource.Bind() in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\DataBinding\DataSources\ChartSeriesDataSource.cs:line

235 at

Telerik.Windows.Controls.ChartView.ChartSeriesDataSource.Rebind(Boolean

itemsSourceChanged, IEnumerable newSource) in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\DataBinding\DataSources\ChartSeriesDataSource.cs:line

81 at

Telerik.Windows.Controls.ChartView.ChartSeriesDataSource.set_ItemsSource(IEnumerable

value) in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\DataBinding\DataSources\ChartSeriesDataSource.cs:line

54 at

Telerik.Windows.Controls.ChartView.ChartSeries.InitDataBinding() in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\Common\ChartSeries.cs:line

316 at

Telerik.Windows.Controls.ChartView.IndicatorBase.InitDataBinding() in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\CartesianChart\Indicators\IndicatorBase.cs:line

94 at

Telerik.Windows.Controls.ChartView.ValueIndicatorBase.InitDataBinding() in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\CartesianChart\Indicators\ValueIndicatorBase.cs:line

50 at

Telerik.Windows.Controls.ChartView.ChartSeries.OnApplyTemplate() in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\Common\ChartSeries.cs:line

239 at

Telerik.Windows.Controls.ChartView.LineIndicatorBase.OnApplyTemplate() in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\CartesianChart\Indicators\LineIndicatorBase.cs:line

112 at

Telerik.Windows.Controls.ChartView.BollingerBandsIndicator.OnApplyTemplate() in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\CartesianChart\Indicators\BollingerBandsIndicator.cs:line

125 at

System.Windows.FrameworkElement.ApplyTemplate() at

Telerik.Windows.Controls.ChartView.RadChartBase.OnPresenterAdded(ChartElementPresenter

presenter) in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\RadChartBase.cs:line

405 at

Telerik.Windows.Controls.ChartView.PresenterCollection`1.InsertItem(Int32 index,

T item) in

c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\Chart\Visualization\Common\PresenterCollection.cs:line

34 at

STA.Modules.MarketData.Views.PairAnalytics.PairAnalyticsDetailPairView.<PostQueryChartData>b__0()

in C:\Segantii\Development\Source Control\Projects\Odin\trunk\Source

Codes\SegantiiTradingAnalytics\STA.Modules.MarketData\Views\PairAnalytics\PairAnalyticsDetailPairView.xaml.cs:line

70 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) at

System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object

args, Int32 numArgs, Delegate catchHandler) at

System.Windows.Threading.DispatcherOperation.InvokeImpl() at

System.Threading.ExecutionContext.runTryCode(Object userData) at

System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode

code, CleanupCode backoutCode, Object userData) at

System.Threading.ExecutionContext.Run(ExecutionContext executionContext,

ContextCallback callback, Object state, Boolean ignoreSyncCtx) 

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

MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate

method, Object args, Int32 numArgs, Delegate catchHandler) at

System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object

args, Int32 numArgs, Delegate catchHandler) at

System.Windows.Threading.Dispatcher.InvokeImpl(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.Application.RunInternal(Window

window) at System.Windows.Application.Run() at

SegantiiTradingAnalytics.App.Main() in C:\Segantii\Development\Source

Control\Projects\Odin\trunk\Source

Codes\SegantiiTradingAnalytics\SegantiiTradingAnalytics\obj\x86\Debug\App.g.cs:line

0 at System.AppDomain._nExecuteAssembly(RuntimeAssembly

assembly, String[] args) at

System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext

activationContext, String[] activationCustomData) at

Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone() 

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext,

ContextCallback callback, Object state, Boolean ignoreSyncCtx) 

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext,

ContextCallback callback, Object state) at

System.Threading.ThreadHelper.ThreadStart()

Any help will be welcome.
Many thanks!

Frankie

ChartView

answered on 19 Nov 2012

2 answers

117 views

Adding custom Golbal Functions

Hi!

I've tried to add a custom function to the functions list and haven'd found any way to do it. In Win Forms, this is possible by extending

Telerik.Data.Expressions.ExpressionContext

class. However, in WPF i haven't found any similar class.
Can you help, please?
Alex

ExpressionEditor

answered on 19 Nov 2012

7 answers

894 views

Persisting a custom filter

In my grid I have a custom collection filter that I created using this blog post: http://blogs.telerik.com/xamlteam/posts/11-12-05/filtering-collection-properties-with-radgridview-for-silverlight-and-wpf.aspx .

I'm currently adding persistence to my grid and running into issues saving/restoring my custom filter. It seems that I need to implement IColumnFilterDescriptor to properly reflect UI changes when I set my filter programmatically upon restoring a persisted grid. However (as in the above demo) my custom filter descriptor only implements IFilterDescriptor. Could you provide some information on how I can implement my own filter descriptor and also be able to persist it?

Thanks.

GridView

answered on 19 Nov 2012

0 answers

60 views

Add Contains as a Default FilterOperator for search in a string field

Hi,
As you know when we add a FilterDescriptors to a RadDataFilter it select IsEqualTo as default item for search.
i want to always show Contains as a default when select a string variable.
How i can do it?

Best Regards.

DataFilter

asked on 17 Nov 2012

1 answer

137 views

Error happend when using RadGridView and Scrollviewer.

Hello,
Please help me with this error. In my application, i put a RadGridView inside a Scrollviewer as showed the code block below. When i run this application each column becomes so wide, their widths are 10000px, equal to their MaxWidth althrougth i do not set any columns' MaxWidth:

<Window x:Class="GridViewTest.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

Title="MainWindow" Height="350" Width="525">

<ScrollViewer telerik:StyleManager.Theme="Metro" HorizontalScrollBarVisibility="Auto">

<telerik:RadGridView AutoGenerateColumns="False" ShowGroupPanel="False" ShowInsertRow="False" IsReadOnly="True" RowIndicatorVisibility="Collapsed" Name="grdItems">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="Header1" Width="50*" MinWidth="50" />

<telerik:GridViewDataColumn Header="Header2" Width="25*" MinWidth="50" TextAlignment="Right" />

<telerik:GridViewDataColumn Header="Header3" Width="25*" MinWidth="50" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</ScrollViewer>

</Window>

What i really want is that the horizontal scrollbar apprears when the main window is not maximize and disappears when the main window is maximize.

GridView

answered on 17 Nov 2012

1 answer

209 views

Document ruler and RadDocument distance

How can i determined?
For example: When i change layout mode flow to paged the distance changing the document ruler and the raddocument.
I would like copy drag from listbox to document some text.Quote of the mouse position, and set the caret position, when drop completed.
When layout mode flow, allright, but paged mode not good.

RichTextBox

answered on 16 Nov 2012