Questions on UI for WPF Forum

1 answer

368 views

Current Tab Index and Header

How do I determine current tab header and index using the RadTabControl (VB.NET)?

Thanks

G

TabControl

answered on 07 Sep 2012

1 answer

138 views

Grid Column Style

Hi,
I am using Radgrid with office black style and am applying a sort descriptor from code, this results in the column header of the sorted column being a different colour from the rest how do I change the default behaviour so that the header is the same as the others?

Regards,
Joe

GridView

answered on 07 Sep 2012

8 answers

176 views

Desktop disappears when running with terminal services

Hello,

Guessing whats happening has something to do with the transparent window used in the Docking control. When our users use one of our programs that contain the docking control inside terminal services everything else disappears. I was wondering if you guys had any ideas on how to get around this? We're thinking of removing the control for now.

Thanks much,
~Boots

Docking

answered on 07 Sep 2012

3 answers

270 views

Drag and drop item into children

I am trying to implement drag-and-drop (holding CTRL pressed) of items into children. Although on DropQuery I set QueryResult to true the tree still denies dropping.

Any reason for this?

Any workaround?

TreeView

answered on 07 Sep 2012

1 answer

123 views

Transition not working when adding RowReorderBehaviour

Hi,

I'm using transition control for changing screens on my application. The transition effect works fine on all screens until I added a RowReorderBehavior on a GridView on one of the screens. The transition effect works on other screens except the one with that gridview. Can anyone help me fix it?

Thanks,
Mark

TransitionControl

answered on 07 Sep 2012

2 answers

342 views

Type reference cannot find type named ... MetroTouchTheme

.NET 4.0
Telerik.Windows.Controls v4.0.30319

During design time, RadPaneGroup throws an exception, but the application builds and runs successfully. Very rarely, the designer will load successfully. The exception thrown in the designer is shown as a flyout panel within the designer stage area and is as follows:

Type reference cannot find type named '{clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls}MetroTouchTheme'.

at MS.Internal.Xaml.Context.ObjectWriterContext.ServiceProvider_Resolve(String qName)

at MS.Internal.Xaml.ServiceProviderContext.System.Windows.Markup.IXamlTypeResolver.Resolve(String qName)

at System.Windows.Markup.TypeTypeConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)

at System.Windows.Baml2006.TypeConverterMarkupExtension.ProvideValue(IServiceProvider serviceProvider)

at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(MarkupExtension me, IServiceProvider serviceProvider)

Here's the XAML:

<Window x:Class="ININ.PSO.MiniClient.Main.UI.Media_Desktop.MediaDesktop"

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

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

xmlns:telerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Docking"

Title="Media Desktop" Height="569" Width="858"

Loaded="Window_Loaded" Icon="/Images/16/window_sidebar.png">

<Grid>

<telerik:RadDocking Name="radDocking" Background="AliceBlue">

<telerik:RadDocking.DocumentHost>

<telerik:RadSplitContainer>

<telerik:RadPaneGroup>

<telerik:RadPane Header="WAW 1">

<TextBlock Text="Some Text" />

</telerik:RadPane>

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

</telerik:RadDocking.DocumentHost>

</telerik:RadDocking>

</Grid>

</Window>

To my knowledge, I am not using metro for anything. Does anyone have any ideas?

Docking

answered on 06 Sep 2012

2 answers

1,000 views

Bold, Italic, Underline ToggleButtons

Hello,

I followed the Getting Started tutorial here to create bold/italic/underline formatting toggle buttons for a WPF application: http://www.telerik.com/help/wpf/radrichtextbox-getting-started.html

And they work, however there is a bug.

If you have no text entered into the RichTextbox and click one of the buttons, it doesn't get highlighted. The text gets the correct formatting, however the button doesn't toggle.

If you click in the middle of the text the buttons highlight correctly, it just seems to happen when the caret is at the end of the line (and outside a span maybe?).

I'm not sure how to solve this.

Thanks.

RichTextBox

answered on 06 Sep 2012

4 answers

159 views

Set Checked Resource Items in Code Behind

Hi,
I try to attach some default values to certain categories, i.e. when the user selects "Category1" in the CategoryCombo, the "Subject", "Body" etc. in the current appointment should be filled with a default text/values.

Now to my problem:
As soon as a category entry is selected, I'd like to "preselect" the default resources in the drop down "Personen" (see screenshot attached).

I've attached an event handler "PART_Categories_SelectionChanged "to the CategoryCombo. Is there a way to access the checkedItems in the resources drop down in order to set the default selection from code behind?

Thank you four your help!

Regards
Daniel

ScheduleView

answered on 06 Sep 2012

0 answers

101 views

Demo app: exception in designer

Hi,
I try to understand the working of the demo application. I can build the app. But when I open the SingleExample.xaml, The designer throws up an exception:
"Exception was thrown on QuickNavigation: Provide value on 'System.Windows.Markup.StaticResourceHolder' threw an exception."
with the details
"Cannot find resource named 'NavigateCommand'. Resource names are case sensitive.
   at System.Windows.StaticResourceExtension.ProvideValueInternal(IServiceProvider serviceProvider, Boolean allowDeferredReference)
   at System.Windows.StaticResourceExtension.ProvideValue(IServiceProvider serviceProvider)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(MarkupExtension me, IServiceProvider serviceProvider)"

With 900 lines of xaml code, it is difficult to understand what is happening here. When I'm able to use the designer, I can pinpoint better the pieces I want to reuse.

How can I get a valid xaml-file for the designer?

Regards,

General Discussions

asked on 06 Sep 2012

2 answers

1.3K+ views

ListBox SelectedItem Binding Broken

I am using WPF having a strange issue with RadListBox SelectedItem databinding, trying to figure out but no luck. Following is my scenario

I am using Telerik Controls (RadListBox, and RadButton)
RadButton is placed inside a ItemsControl, RadListBox and ItemsControl are bind to sameItemsSource.
I am using PRISM and MVVM.
What I want is when I click on button, the same item is selected from RadListBox automatically,(This part working fine).
Problem: As soon as I click on any item of RadListBox and then click back on any button the item selection stops working.
Even more strange thing: I tried the same thing with standard WPF ListBox by adding attached behavior for selection changed event and attached property of Command and CommandParameter, it works fine, so it looks like an issue with Telerik RadListBox ?

Now let me come to code.

ViewModel Class

public class MainViewModel : INotifyPropertyChanged

{

public event PropertyChangedEventHandler PropertyChanged;

// Create the OnPropertyChanged method to raise the event

protected void OnPropertyChanged(string name)

{

PropertyChangedEventHandler handler = PropertyChanged;

if (handler != null)

{

handler(this, new PropertyChangedEventArgs(name));

}

public DelegateCommand<object> StudentSelected { get; set; }

public DelegateCommand<object> ButtonPressed { get; set; }

private void OnStudentSelected(object par)

{

//Debugger.Break();

if (handled == false)

{

Student std = par as Student;

if (std != null)

{

SelectedStudent = std;

}

handled = false;

}

private void OnButtonPressed(object par)

{

//Debugger.Break();

handled = true;

String std = par as String;

if (std != null)

{

foreach (Student st in _students)

{

if (st.Name.Equals(std))

{

SelectedStudent = st;

break;

}

private Student _selectedstudent;

private bool handled = false;

public MainViewModel()

{

StudentSelected = new DelegateCommand<object>(OnStudentSelected);

ButtonPressed = new DelegateCommand<object>(OnButtonPressed);

}

public Student SelectedStudent

{

get

{

return _selectedstudent;

}

set

{

_selectedstudent = value;

OnPropertyChanged("SelectedStudent");

}

private ObservableCollection<Student> _students;

public ObservableCollection<Student> Students

{

get

{

return _students;

}

set

{

_students = value;

OnPropertyChanged("Students");

}

public class Student

{

public String Name { get; set; }

public String School { get; set; }

}

MainView XAML

<telerik:RadListBox Grid.Column="0" Grid.Row="0" ItemsSource="{Binding Students}" Command="{Binding StudentSelected}" CommandParameter="{Binding RelativeSource={RelativeSource Mode=Self}, Path=SelectedItem}" SelectedItem="{Binding SelectedStudent, Converter={StaticResource DebugConverter}}">

<!-- The above debug converter is just for testing binding, as long as I keep on clicking button the Converter is being called, but the moment I click on RadListBoxItem the Converter is not called anymore, even when I click back on buttons -->

<telerik:RadListBox.ItemTemplate>

<DataTemplate>

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

</DataTemplate>

</telerik:RadListBox.ItemTemplate>

</telerik:RadListBox>

<Label Grid.Row="0" Grid.Column="1" Content="{Binding SelectedStudent.Name}"></Label>

<StackPanel Grid.Column="1" Grid.Row="1" Orientation="Horizontal">

<ItemsControl ItemsSource="{Binding Students}">

<ItemsControl.ItemTemplate>

<DataTemplate>

<telerik:RadButton Width="100" Height="70" Content="{Binding Name}" Command="{Binding RelativeSource={RelativeSource FindAncestor,

AncestorType={x:Type Window}}, Path=DataContext.ButtonPressed}" CommandParameter="{Binding RelativeSource={RelativeSource Mode=Self}, Path=Content}">

</telerik:RadButton>

</DataTemplate>

</ItemsControl.ItemTemplate>

</ItemsControl>

</StackPanel>

and finally populating the ViewModel and setting the Datacontext

MainViewModel mvm = new MainViewModel();

ObservableCollection<Student> students = new ObservableCollection<Student>();

students.Add(new Student { Name = "Student 1", School = "Student 1 School" });

students.Add(new Student { Name = "Student 2", School = "Student 2 School" });

students.Add(new Student { Name = "Student 3", School = "Student 3 School" });

mvm.Students = students;

//Bind datacontext

this.DataContext = mvm;

Please give your suggestions and share you expertise.

I have created a demo project replicating the above scenario, please let me know if it is required?

ListBox

answered on 06 Sep 2012