Questions on UI for WPF Forum

7 answers

350 views

TabControl as region in Prism4 doesn't work as expected for Activate method

If you specify a normal tab control as a region and activate one of the views (already added) then the corresponding tab gets selected.
However if the RadTabControl is used as a region then nothing happens when the view is activated (tab doesn't get selected).
Also all tabs remain active views at all times and IsActive property for ViewModel (that implements IActiveAware) doesn't ever change i.e. on switching tabs.

I could have very well used a normal tab control but I want the expression dark theme which is only available for the RadTabControl.

TabControl

answered on 28 Jan 2013

2 answers

142 views

Need Help on loading and controlling RadPanelBar programatically in MVVM mode

Hi,

I need help in loading and controlling RadPanelBar programatically in MVVM pattern start from loading the panelBarItems.
I want to create a RadPanelBar which will have set of items and each item will have the ContentControl (loads an UserControl). I want to control the expand and selection of each item by set of buttons. Let me explain this briefly,

my RadPanelBar has 3 items, each PanelBarItem loads an usercontrol. I should be able to control expand of these panelbar items by a listbox having 3 buttons i.e. 1st RadPanelBar item expands on 1st button click, 2nd item expands on 2nd button click etc.
I should be able to do everything progrmatically i.e. even loading the panelbar items and List box items.

I am attaching the XAML code i have used to achieve this,

<telerik:RadPanelBar x:Name="mybar" Width="830" Height="430" HorizontalAlignment="Left" Grid.Row="0" Focusable="False"

VerticalAlignment="Stretch" BorderBrush="#FFCBD8E8" BorderThickness="1 1 0 1" ExpandMode="Multiple" Margin="10,10,10,10" Background="Transparent"

ItemsSource="{Binding PanelBarItemsList}"

SelectedItem="{Binding PanelBarSelected, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}">

<telerik:RadPanelBar.ItemTemplate>

<DataTemplate>

<telerik:RadPanelBarItem x:Name="pnliTopic" IsSelected="{Binding IsSelectedValue, Mode=TwoWay}" IsExpanded="{Binding IsExpandedValue, Mode=TwoWay}" >

<telerik:RadPanelBarItem.Header>

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

</telerik:RadPanelBarItem.Header>

<ContentControl x:Name="View" Margin="10,10,10,10" Visibility="Visible" HorizontalAlignment="Left" VerticalAlignment="Top" Width="Auto" Height="Auto"

Content="{Binding UserControlView}" />

</telerik:RadPanelBarItem>

</DataTemplate>

</telerik:RadPanelBar.ItemTemplate>

</telerik:RadPanelBar>

Here is the view model code,

private ObservableCollection<ToolOption> m_PanelBarItems;

public ObservableCollection<ToolOption> SettingsList

{

get { return m_PanelBarItems; }

set

{

m_PanelBarItems = value;

}

Contructor()

{

m_PanelBarItems = new ObservableCollection<PanelBarItem>();

foreach (string strTool in m_LocalCollection)

{

PanelBarItem item= new ToolOption(strTool );

m_PanelBarItems.Add(item);

}

 m_PanelBarItems[0].IsExpandedvalue = true;

 m_PanelBarItems[0].IsSelectedValue = true;

 m_PanelBarItems[0].UserControlView = new UserControlView1();

 PanelBarSelected = m_PanelBarItems[0];

 m_PanelBarItems[0].UserControlView.Visibility = Visibility.Visible;

 this.OnPropertyChanged("PanelBarSelectTool");

}

public object PanelBarSelectTool { get; set; }

//PanelBarItem Class definition

public class PanelBarItem: INotifyPropertyChanged

{

public string Name { get; set; }

private bool selected;

private bool expanded;

public System.Windows.Controls.ContentControl m_View = null;

//private object m_View = null;

public bool IsSelectedValue

{

get

{

return selected;

}

set

{

selected = value;

this.OnPropertyChanged("IsSelectedValue");

}

public bool IsExpandedvalue

{

get

{

return expanded;

}

set

{

expanded = value;

this.OnPropertyChanged("IsExpandedvalue");

}

public System.Windows.Controls.ContentControl UserControlView

{

get

{

return m_View;

}

set

{

if (m_View != value)

{

m_View = value;

}

public PanelBarItem(string name)

{

this.Name = name;

this.IsSelectedValue = false;

this.IsExpandedvalue = false;

}

public event PropertyChangedEventHandler PropertyChanged;

private void OnPropertyChanged(string propertyName)

{

if (this.PropertyChanged != null)

{

this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));

}

I hope you understand what i want to achieve.
Let me know if you need more information.

PanelBar

answered on 28 Jan 2013

1 answer

184 views

CartesianGridLineAnnotation ZIndex problem

Hi,
Use ZIndex property doesn't work when i use it like that :

<telerik:CartesianGridLineAnnotation Axis="{Binding ElementName=verticalAxis}"

Value="0"

Stroke="White"

ZIndex="0"/>

The series are under the annotation.

So, when putting Panel.ZIndex = 0 CartesianGridLineAnnotation with snoop, shows the annotation under the series like i expect.

ChartView

answered on 28 Jan 2013

5 answers

317 views

Visual Studio 2012 Designer Error With Implicit Themes

I am encountering a problem when applying implicit themes to a vb.net WPF project. The problem appears to be with the
RibbonView implicit theme: Themes/OfficeBlack/Telerik.Windows.Controls.RibbonView.xaml

I followed the instructions from the help system for implicit themes and created a resource dictionary in the application.xaml file as follows:

<ResourceDictionary.MergedDictionaries>

</ResourceDictionary.MergedDictionaries>

I also referenced the corresponding dlls from the installation directory:
C:\Program Files (x86)\Telerik\RadControls for WPF Q3 2012\Themes.Implicit\WPF40\Metro\Themes

The program compiles and runs OK.
The problem is that the xaml designer has the following error

System.ArgumentException

'{DependencyProperty.UnsetValue}' is not a valid value for the 'Telerik.Windows.Controls.RadRibbonGallery.Icon' property on a Setter.

The stack Trace indicates that the error takes place in the expression designer. This error is listed 3 times.
There are no errors in the xaml code or in the vb.net code
That same error occurs for several of the themes that I have tried (Windows8, windows7, OfficeBlue, OfficeBlack)

The markup for window that I am designing does not use the radRibbonView, nor does it use the RadRibbonGallery.

When I remove the following line from the application Xaml ResourceDictionary merge:
<ResourceDictionary Source="Themes/OfficeBlack/Telerik.Windows.Controls.RibbonView.xaml">

the errors disappear.

Do you have a bug in the RibbonView.xaml?

Thanks for your help in solving this

Thanks

Philippe

RibbonView and RibbonWindow

answered on 28 Jan 2013

3 answers

359 views

UpdateSourceTrigger=PropertyChanged Problem

i need to Trigger my methord when Change Value of RadNumericUpDown Where is My Code :

<telerik:RadNumericUpDown x:Name="tv" HorizontalAlignment="Left" Margin="80,26,0,0" VerticalAlignment="Top" Width="183" IsInteger="True" Value="{Binding MethodParameters[0], BindsDirectlyToSource=True, Mode=OneWayToSource, Source={StaticResource totalAmountIs},Converter ={StaticResource doubleToString}, UpdateSourceTrigger=PropertyChanged}" UpdateValueEvent="PropertyChanged"/>

But it Doesn`t work. if Bind a textbox with this same code it work fine. here were i am wrong ?? it well be best if give a example

Thank`s for lelp.

NumericUpDown

answered on 28 Jan 2013

4 answers

324 views

Print Preview Guidance

Hello, I'm struggling to find guidance in your documentation on how to implement a print preview for your radgridview. Can you point me to a clear example on how to accomplish this?

Thanks

GridView

answered on 28 Jan 2013

12 answers

129 views

HP Touchsmart related issue maybe...?

We have one computer out of many that is having issues with grouping in the gridview. It happens to be the only hp touchsmart in the whole company.

Here is some detail:
WPF 2012.3.1224.40
.NET 4 C#
HP Touchsmart 310-1126
Gridview is inside docking.
Gridview itemsource bound to filteredsource of datafilter.
datafilter itemsource bound to datatable.

When user adds group in group header or program programatically adds grouping we get the followin error from 3-10 times immeditally (same exception over and over at once). We follow the same steps on a bunch of other computers and no issues...

Message: Object reference not set to an instance of an object.

Source: Telerik.Windows.Controls.GridView

Trace: at Telerik.Windows.Automation.Peers.GridViewGroupRowAutomationPeer.GetNameCore()

at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()

at System.Windows.ContextLayoutManager.fireAutomationEvents()

at System.Windows.ContextLayoutManager.UpdateLayout()

at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)

at System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork()

at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()

at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)

at System.Windows.Media.MediaContext.AnimatedRenderMessageHandler(Object resizedCompositionTarget)

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)

GridView

answered on 28 Jan 2013

1 answer

427 views

Export PDF with password security or encryption

Hi

I'm looking for a sample for using encryption when exporting pdf files. It should be available now: http://www.telerik.com/support/pits.aspx#/details/Issue=10766

Thanks

Mike

RichTextBox

answered on 28 Jan 2013

1 answer

200 views

Having problems updating the WPF VSExtensions

Whenever I get into VS 2010 I'll get a message that there's an update to the Telerik WPF VSExtensions (my current version is 2011.3.1305.0, and it says the new version is 2012.3.1212.0.) When I tried to update it I get the following error:

"The extension could not be installed because the following error occurred: Telerik WPF VSExtensions is already installed."

Installer and Visual Studio Extensions

answered on 28 Jan 2013

2 answers

162 views

Paging without filter

I'm trying to figure out a way to have a RadGridView with paging, but NOT have the RadGridView filter based on the page: but simply jump to the page. And the page count be based on the total number of displayed items (based of course on the size of the window).

There's no happy number for 'items on a page' that I can choose that actually work for everybody, with their different resolutions and such. And letting them set it just makes it more complicated. I'm really just looking for a control that's a lot like the RadDataPager, but just tracks and controls the RadGridView's current top-shown record.

Or, alternatively, the "Pager" control could just let you jump to sections based on the first letter of the items. Like, A, B, C D, etc.

GridView

answered on 25 Jan 2013