I'm using a RadScheduleView with some combobox dropdowns to set filter options. Here's how I set this up (excess code has been removed):



When I use this, I get a binding error after it's first initialized:

Get System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=AppointmentFilter; DataItem='CalendarViewModel' (HashCode=6511533); target element is 'MonthViewDefinition' (HashCode=63187382); target property is 'AppointmentFilter' (type 'Predicate`1')

But other than that, everything works as I expect. My appointments are displayed as per my filter settings. As I change my dropdown, the AppointmentFilter gets called for every appointment and the visible appointments are changed to match the filter.

But, if I remove setting of the DataContext from the xaml:


and move it to the code behind:


Now, instead of seeing the "governing FrameworkElement" binding error first, the AppointmentFilter is called for each appointment right away, but then I get the binding error at the end:

System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=AppointmentFilter; DataItem=null; target element is 'MonthViewDefinition' (HashCode=32578312); target property is 'AppointmentFilter' (type 'Predicate`1')

At this point, ALL appointments are displayed, not just the ones that meet the filter requirements.

Even worse is that, as I change the dropdown, the AppointmentFilter gets called for every appointment as I expect, but the visible appointments don't change!! For some reason, the AppointmentFilter is called, but then completely ignored, so all appointments are displayed.

As far as I can tell, the governing FrameworkElement binding is known WPF behavior. What I don't understand is why RadScheduleView doesn't fully recover from this. Since the AppointmentFilter is being called, it seems to partially recover, but then the results of the filtering are ignored.

How can I fix this problem?

Thank you!

How do I localize the number format used in RadGridView for double to German culture (1.23 is written in German culture 1,23)?

Take a very simple RadGridView like in the "Getting Started" example for RadGridView (http://www.telerik.com/help/wpf/gridview-getting-started2.html).
On a clean new VS2010 Telerik RadControls project on my German Win7 machine, the header block ("Drag a column header and drop it here ...") is displayed correctly in German ("Ziehen Sie einen Spaltenkopf auf diese Fläche ..."), but cells of columns that represent a  property of type double will not work correctly with German culture. When I enter e.g. the German value half (0,5) it will be interpreted as five (5).

How do I change this?

I already tried

            InitializeComponent();
            LocalizationManager.DefaultCulture = new System.Globalization.CultureInfo("de");

But it does not work...

I am trying to remove the mouseover row highlight on a RadGridView. I've followed the instructions here, but I put the style in a resource dictionary. Here is the App.xaml:


And the RadGridView xaml:


This style is completely ignored if it is in an external file. If I do the same procedure as in the stated in the documentation but put it in the MainWindow.xaml file, it works correctly. Why is this?

Our product use telerik Richtextbox editor  and  currently there is no turkish lira symbol support. Is there a way to add support Turkish Lira symbol to the editor. Thanks anyway.

Hi,
I have a radCarousel control with custom items. When I show first time, it shows all items, but when the user move mouse pointer over it, all items disappear from carousel and Output windows show this:

System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=ReflectionSettings.HiddenPercentage; DataItem=null; target element is 'GradientStop' (HashCode=36177439); target property is 'Offset' (type 'Double')
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:(no path); DataItem=null; target element is 'VisualBrush' (HashCode=13645305); target property is 'Visual' (type 'Visual')


This is my XAML Code:
<Window.Resources>
<Style TargetType="{x:Type telerik:CarouselItem}">
<Setter Property="Height" Value="600"/>
<Setter Property="Width" Value="400"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type telerik:CarouselItem}">
<Grid>
<Rectangle HorizontalAlignment="Center" VerticalAlignment="Top" Width="300" Height="400" RadiusX="6" RadiusY="6" StrokeThickness="1" Stroke="#FF47587C" Fill="Black"/>
<Rectangle x:Name="recName"  Margin="60,10,60,540"  Stroke="Black" 
                                       RadiusX="6" RadiusY="6" StrokeThickness="1">
<Rectangle.Fill>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0" x:Name="X">
<GradientStop Color="#FF020F1F" Offset="0.138"/>
<GradientStop Color="#FF032247" Offset="1"/>
</LinearGradientBrush>
</Rectangle.Fill>
</Rectangle>
<ContentPresenter IsHitTestVisible="True"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type telerik:CarouselDataRecordPresenter}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type telerik:CarouselDataRecordPresenter}">
<StackPanel HorizontalAlignment="Center" TextElement.FontSize="20" TextElement.FontWeight="Bold" TextElement.Foreground="#FFBEC4DE">
<Label Content="{Binding Path=Fullname}" Margin="0,13,0,19" HorizontalAlignment="Center" TextElement.Foreground="#FFBEC4DE"/>
<Image x:Name="imgInternal"  Width="274" Height="270" Stretch="Fill" Source="{Binding Path=PictureFullPath}" />
<Label HorizontalAlignment="Center" Margin="0,10,0,0"  Content="{Binding Path=Position}" TextElement.FontSize="16" TextElement.FontWeight="Normal" TextElement.Foreground="#FFBEC4DE"/>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>

This is radCarousel control: 
<telerik:RadCarousel  x:Name="rcUsers" Background="Black" Height="500" Margin="100,50,100,-120" HorizontalAlignment="Center" VerticalAlignment="Top" VerticalScrollBarVisibility="Hidden" HorizontalScrollBarVisibility="Hidden" SelectionChanged="rcUsers_SelectionChanged" MouseDoubleClick="rcUsers_MouseDoubleClick" />

Thanks in advance,

Carlos De Jesus

RadDataForm does not validates correctly objects inherited from ICustomTypeDescriptor because it uses standard Validator.TryValidateObject method which works with standard reflection. Insteed it must use internal dynamic PropertyDescriptors and validate object by them.

RadDataForm.cs: 

Hello,

I have problem with RadDataPager. If I try to write specific page number into current page textbox and press enter key (or tab key as well), nothing happens, only LostKeyboardFocus is fired. These are the only two keys that fires that event. Have you faced that issue before?

This is the code of my page:



Thank you very much.
Karel Bem

How to change the main color of RadGridView
from black to red

graciously
André

The samples provided with the BreadCrumb control suggest it can be used to coordinate navigation through a directory tree, but the provided samples all use static content to populate the BreadCrumb control's ItemSource data.

How can the BreadCrumb control be used with dynamic content?  For example, an XML representation that consists of an XPath that has a "Name" for a given "Folder" to represent a particular directory path where the path is built up dynamically as you navigate toward a particular target directory:

C:\Root\test1\test2\

[C:\] ^| [Root]^| [test1]^ | [test2]^

Where each breadcrumb shown above has it's data populated as you select the next, rather than having the entire path pre-built, as shown in the provided examples?

You would not know the target directory in advance of navigation if the Breadcrumb control were used in this manner, so the provided examples are not representative of actual usage for this scenario.

Sample XML:
<XmlDataProvider x:Key="FolderRoot">
<x:XData>
<Folder xmlns="" Name="C:\">
</Folder>
</x:XData>
</XmlDataProvider>

Note: the above XML is built dynamically as you navigate through directory structure.  This is just the very first node.

Hello,

consider the following xaml:

    <telerik:RadDateTimePicker SelectionChanged="RadDateTimePicker_OnSelectionChanged" />

In the code-behind, there's this:

    private void RadDateTimePicker_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        throw new Exception("Exception!");
    }

Even if you add event handlers to the necessary events in App.xaml.cs (DispatcherUnhandledException and AppDomain.CurrentDomain.UnhandledException), these will never be triggered.

Do the same with a normal Button and the events will fire.

Is RadDateTimePicker(.SelectionChanged) swallowing these exceptions?

My application is a little more complex (with MVVM and a Command), but it boils down to that. So is there any way of catching these exceptions too? I want a general exception handler in my App.xaml.cs for any non-specific cases I didn't (or chose not to) handle. It would be cumbersome if I'd have to add try-catches for every command that's fired by a RadDateTimePicker (and a leaking of knowledge about the UI in my ViewModel).