Questions on UI for WPF Forum

4 answers

130 views

Does RadDateTimePicker swallow exceptions on SelectionChanged?

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).

DateTimePicker

answered on 15 May 2014

1 answer

138 views

Drag and Drop exception in MVVM example

Hello,

I have downloaded Diagram/MVVM_WPF examples, but when I run example, make a connection e.g. between R8 and Golf blocks, and after this move R8 block into Volkswagen container I got an exception "Unable to cast object of type 'Telerik.Windows.Controls.RadDiagramConnection' to type 'Telerik.Windows.Controls.Diagrams.Extensions.ViewModels.NodeViewModelBase'."

How to resolve this issue?

Diagram

answered on 15 May 2014

1 answer

205 views

RadTreeView with a border brush bind to default theme border bursh?

Hello!

I am trying to change a color of RadTreeView border, but I can't find information on how to reference default border brush which is influenced by current theme.

TreeView

answered on 15 May 2014

3 answers

265 views

[Solved] Using LINQ to locate Item in GridView

I am using the following to locate an Item in the grid and select it;

For Each item As AreaView In gvArea.Items

If (item.AreaId = iAreaId) Then

gvArea.SelectedItem = item

gvArea.ScrollIntoView(item)

Exit For

End If

Next

However I would prefer to use something like;

Dim item As AreaView = gvArea.Items.Where(Function(f) f.AreaId = iAreaId)

gvArea.SelectedItem = item

gvArea.ScrollIntoView(item)

I have tried the above using "gvArea.Items", "gvArea.ItemsSource" and "gvArea.DataContext" with no luck.

Thanks in advance...

GridView

answered on 15 May 2014

3 answers

152 views

No VB Love?

Hi,

Was trying to get some of the controls working in the demo using the online documentation, but noticed it is only given in C#. While I'm well aware that there are online conversion tools (you have one too), I was hoping Telerik of all companies would buck the ignorant trend of the many .Net sites and treat VB developers as equals. I mean, we already deal with C# being the default examples on all of the other controls.

Not trying to get down on Telerik in any way, shape or form. Just an observation.

Going back to the WPF documentation, I'm assuming you're still working on it and am hopeful that you'll include documentation for the other 50-60% of the developers out there. Also, some procedural code examples would be awesome as well. Currently, there are examples of how th dynamically build the controls that way.

Thanks,
Kurt

General Discussions

answered on 14 May 2014

4 answers

193 views

Predefined windows for File Open, Save, and Print ?

I have looked for, but not yet found, any predefined RadWindows for File Open, File Save, and File Print dialogs. Do they exist? If not, are there any plans to make them available in a future version of RadWindow?

Please see the post by Manfred Lange

http://msdn.microsoft.com/en-us/library/aa969773.aspx

at MSDN regarding the existing Microsoft common dialog boxes and the problems with them. I think it would be great if Telerik provided a unified set of predefined windows (including File Open Save and Print) for use with RadWindow.

Thanks.

PS: Note that the remarks by Manfred Lange concerning these standard window dialogs are found at the end of that long MSDN article on common dialog windows.

Window

answered on 14 May 2014

3 answers

189 views

Split Table Cell

Does the RadRichTextBox control support split table cell? I can't find any documentation for it. If not supported directly, how do I implement the functionality programmatically?

RichTextBox

answered on 14 May 2014

7 answers

203 views

selected row when grouping

Hi,
i got a problem with getting selected row when grid is groupped. I got event on
GridView.RowDetailsProvider.PropertyChanged
than in void:
var selectedRow = (GridViewRow)this.ListGridView.ItemContainerGenerator.ContainerFromItem(this.ListGridView.SelectedItem);
but it works only when grid is not groupped. How can i get GridViewRow from group?

GridView

answered on 14 May 2014

1 answer

113 views

Empty values style

Hi,
is there any way how can I highlight empty values in chartview? I tried to use PointTemplateSelector but when Series YValue is null or Double.NaN then I can't draw empty value.

ChartView