Questions on UI for WPF Forum

1 answer

186 views

Hello,

I've got a domain model info class, basically some get-only properties on an INotifyPropertyChanged class. I set the DataContext to an instance of this, but nothing is happening for the RadPropertyGrid. No properties show up.

Question: do the properties need to be settable? Or otherwise have ReadOnlyAttribute attached to them?

Thank ye...

Best regards.

PropertyGrid

answered on 28 Mar 2014

6 answers

182 views

[Solved] problem when bind image and header name

Hi,

I had a separate radpane xaml class, it would dynamically generated radpane if it needs.

My problem is when I bound HeaderName to Header without HeaderTemplate code(where I commented), it is working fine to show headername only. But if I uncommented HeaderTemplate code, I only got image show in the UI, no text.
Below is my code:

<telerik:RadPane x:Class="TemplatorWPF.LoadSource" x:Name="RadPaneSource"

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

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

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

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

xmlns:local="clr-namespace:_ViewModel;assembly=_ViewModel"

mc:Ignorable="d" Header="{Binding HeaderName}"

d:DesignHeight="300" d:DesignWidth="300">

<!--<telerik:RadPane.HeaderTemplate>

<DataTemplate>

<StackPanel Orientation="Horizontal">

<Image Source="../Resources/templator - level 1.png" />

<TextBlock Text="{Binding HeaderName}"/>

</StackPanel>

</DataTemplate>

</telerik:RadPane.HeaderTemplate>-->

<telerik:RadPane.Resources>

Docking

answered on 28 Mar 2014

3 answers

315 views

Dynamically add View Model RadPane to DocumentHost

Hello,

I've got one or more File View Models, I open them through the command pattern and they land in a "Workspace" view model. It has a Files properties that is an observable collection. There is also the concept of Workspace opened documents and/or ActiveDocument, which should cause the corresponding pane to land in a default DocumentHost and/or activate.

Anyhow, as far as I can figure, I need to be inheriting from RadPane in order to cook up any document or tool windows. Which themselves either aggregate our custom UserControl or themselves have the XAML specified.

Is there a tutorial I can study along these lines?

Thank you.

Best regards.

Docking

answered on 28 Mar 2014

1 answer

143 views

Tooltip for Minimize button in Office2013 theme

Hello,
when you leave the mouse cursor over the Minimize button in the Office2013 theme, the tooltip is placed under the ribbon and seems to contain additional empty lines.
Patrick

RibbonView and RibbonWindow

answered on 28 Mar 2014

1 answer

1.6K+ views

KeyDown event not triggering on arrow up and down

If I type a letter it goes to the event, but not the arrow keys.

KeyUp does catch the arrow keys, so that's what I'm going to use

I'm basically doing this to put things in edit mode on the arrow up and arrow down:

private void handleArrows(object sender, KeyEventArgs e)

{

RadGridView rgv = (RadGridView)sender;

if (e.Key == Key.Down)

{

RadGridViewCommands.MoveDown.Execute(null);

rgv.BeginEdit();

e.Handled = true;

}

if (e.Key == Key.Up)

{

RadGridViewCommands.MoveUp.Execute(null);

rgv.BeginEdit();

e.Handled = true;

}

GridView

answered on 28 Mar 2014

3 answers

136 views

Clearing a hierarchical content

Hello,
I'm using MVVM pattern and a behavior to load hierarchical data from a radgridview... at the main row expansion I call a webservice to fetch data, after some operation I need to reload the inner gridview..... I don't know how to clean the content just loaded since if I do a

parentGrid.IsExpanded = false;
parentGrid.IsExpanded = true;

it doesn't make the call since it has the data already loaded...
Thanks in advance

Paolo

GridView

answered on 28 Mar 2014

11 answers

373 views

WPF RadDatePicker - Calendar disappears on selecting next/previous month

Hi,

I am using RadDateTimePicker control for my WPF app.

On clicking the calendar icon next to the data text box, the calendar shows up and I can select a date.
But when I hit next/previous to change month, the Calendar disappears and even after hitting the little calendar icon, the calendar doesn't show up ever again.

Here's the code that is being used on my WPF screen:

<telerik:RadDateTimePicker x:Name="editableStartDate" Width="100" Margin="0,1" IsTooltipEnabled="False" InputMode="DatePicker" SelectedValue="{Binding StartDate, Mode=TwoWay}" HorizontalAlignment="Left" VerticalAlignment="Top" Height="26" Grid.Row="2" Grid.Column="1" />

Am I doing something wrong here ? Please let me know.

thx,
Ashish

DatePicker

answered on 28 Mar 2014

4 answers

439 views

[Solved] CartesianCustomAnnotation annotations not showing up on chart

I have RadCartisianChart on a Window and on a button click I would like to add a vertical line at a particular channel (x-axis value) and label the line. Here is the code for my button click event.

Please let me know if you know why the CartsianCustomAnnotation is now being displayed. I've also provided a link to a zipped stripped-down example C# WPF project which demonstrates this: Telerik ChartView CartesianCusomAnnotation not display

01.private void Button_OnClick(object sender, RoutedEventArgs e)

02. {

03. Random rnd = new Random();

04. int curChannel = rnd.Next(1, 1000);

05.

06. CartesianGridLineAnnotation myLineAnnotation = new CartesianGridLineAnnotation();

07. myLineAnnotation.Axis = radCartesianChart1.HorizontalAxis;

08. myLineAnnotation.Value = curChannel;

09.

10. myLineAnnotation.Stroke = System.Windows.Media.Brushes.Fuchsia;

11. radCartesianChart1.Annotations.Add(myLineAnnotation);

12.

13. var newKLMLabel = new CartesianCustomAnnotation();

14. newKLMLabel.HorizontalAxis = radCartesianChart1.HorizontalAxis;

15. newKLMLabel.VerticalAxis = radCartesianChart1.VerticalAxis;

16.

17. var border = new Border();

18. border.CornerRadius = new CornerRadius(4);

19. border.Background = Brushes.Gray;

20. border.Opacity = 0.9;

21.

22. //var content = new TextBlock();

23. var content = new Label();

24. content.Content = "Channel " + curChannel.ToString();

25. border.Child = content;

26.

27. newKLMLabel.Content = border;

28. newKLMLabel.HorizontalValue = curChannel;

29. newKLMLabel.HorizontalAlignment = System.Windows.HorizontalAlignment.Center;

30. newKLMLabel.VerticalValue = _chartVM.ParticleEdsSpectrum[curChannel].Counts;

31.

32. newKLMLabel.Tag = "klmlabel";

33.

34. newKLMLabel.Visibility = Visibility.Visible;

35.

36. radCartesianChart1.Annotations.Add(newKLMLabel);

37.

38. }

ChartView

answered on 27 Mar 2014

2 answers

525 views

RadGridView WPF designer error

Just start working with RadGridView and faced this issue in Design time, in runtime everything is working fine. For example this simple scenario from documentation.

All other control work fine both in design time and runtime.
I'm using Visual studio 2012 Update 3. Telerik 2013.2.611.45.Trial

<UserControl xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" x:Class="MyAppNameHere.Desktop.View.UsersControl"

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

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

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:viewModel="clr-namespace:Toto.Desktop.ViewModel"

mc:Ignorable="d" d:DataContext="{d:DesignInstance Type=viewModel:UsersVm}"

d:DesignHeight="300" d:DesignWidth="600">

<Grid x:Name="LayoutRoot" Background="White">

<telerik:RadGridView x:Name="radGridView" />

</Grid>

</UserControl>

Error information:

System.NullReferenceException
Object reference not set to an instance of an object.
   at Microsoft.Expression.WpfPlatform.WpfPlatformMetadata.ShouldTrimSurroundingWhiteSpace(IType typeId)
   at Microsoft.Expression.Markup.XamlParser.ParseContent(XamlParserContext parserContext, IDocumentNodeReference
...............

or sometimes this error:

System.ArgumentException
Property 'System.Object ItemsSource' is not defined for type 'Telerik.Windows.Controls.RadGridView'
   at System.Linq.Expressions.Expression.Property(Expression expression, PropertyInfo property)
   at System.Linq.Expressions.Expression.Property(Expression expression, MethodInfo propertyAccessor)
   at Telerik.Windows.Controls.GridView.Design.GridViewDataControlMetadata.AddDefaultAttributes(AttributeCallbackBuilder builder)
..........

Kind regards, Denis

GridView

answered on 27 Mar 2014

5 answers

208 views

[Solved] Floating Pane losses content

Hello i have an interface with Raddocking component. It saves and load layout ok, load the content for each radpane after loading...

But i have a problem. The content of each pane have a UserControl with a WindowFormHost inside. Only when radpane go to floating, the content appears in blank. I try to add the content again when the radpane go to float, but with no result.

Any ideas?

Thanks in advance.

Docking

answered on 27 Mar 2014