RadGridView gets empty when I use CollectionViesSource with different inherited classes. Here is the example:

I created following window:

<Window x:Class="WpfApplication6.MainWindow"

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

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

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

        Title="MainWindow" Height="350" Width="525">

    <Window.Resources>

        <CollectionViewSource Source="{Binding Source={x:Static Application.Current}, Path=Employees}" x:Key="employees"/>

    </Window.Resources>

    <Grid>

        <telerik:RadGridView ItemsSource="{Binding Source={StaticResource employees}}" Margin="12,12,0,120" />

        <ListBox ItemsSource="{Binding Source={StaticResource employees}}" Margin="12" Height="102" VerticalAlignment="Bottom" >

            <ListBox.ItemTemplate>

                <DataTemplate>

                    <StackPanel Orientation="Horizontal">

                        <TextBlock Text="{Binding Name}" Margin="8" />

                        <TextBlock Text="{Binding Id}" Margin="8"  />

                        <TextBlock Text="{Binding Class}" Margin="8"  />

                    </StackPanel>

                </DataTemplate>

            </ListBox.ItemTemplate>

        </ListBox>

    </Grid>

</Window>

And codebehind:


In this example everything is ok, RadGridView and ListView displays same results. In following example everything is ok too:


But if I'll use mixed collection RadGridView become empty and ListBox will display correct results:

Screenshot is attached.
What's the problem here?

I am not sure if I missed it but I am unable to find any property or setting where I can keep the Transition Control pages from reloading. For example I have the control load with three web browsers. I do a Google search in one of them, switch to another one, come back to the Google page and my search results are gone as the control has reloaded. If this is by design I'll need to come up with another solution as I was wanting to use the Transition control for pages (and I could have anything on those pages from a win32 wrapped exe to web browser to pure wpf controls) that stay active until closed.

TIA
JB

Is there a way with the RadMAskedCurrencyInput to not have the long __,__,__ with it?


Thanks,

S

Hi ... we have found some strange behviour when hosting Windows Workflows inside the RadDocking component. I have attached an example solution which demonstrates the problem. Basically it seems that the Click is being captured somewhere and is not making it to the combo to open it. The Workflow designer in the soltuion is shown working outside the Docking component, and not working inside it. To test the problem, just run the solution and then try and click the 2 combos.

Demo Solution

I have created a application in which I added a Scroll Viewer and in it a canvas is applied. In canvas  a RadMenu is attached. In it a RadMenuItem is placed. And its sub child is created. When I move the scroll bar child moves along the scroll bar. So please tell me the solution of this problem.

Code is attached here..........
<Grid>
        <ScrollViewer>
            <Canvas Height="2000" Background="AliceBlue">
                <telerik:RadMenu >
                    <telerik:RadMenuItem Header="asd">
                        <telerik:RadMenuItem Header="child"></telerik:RadMenuItem>
                    </telerik:RadMenuItem>
                </telerik:RadMenu>
            </Canvas>
        </ScrollViewer>
   </Grid>

Hi,

I have a simple project with a RadTreeView and two button (add/delete) bind to ICommand from my model.

1 When I try to add an item my AddCommand add a item in my binding collection
With this way the RadTreeViewItem is well editing but fill with text "RadTreeSample.ViewModel.PersonViewModel" and not "New Person". If i change EditMode=true to EditMode=false the item is well selected and well filled and i can edit correctly after. How to enable EditMode correctly ?

2 When i delete an item it will be fun if previous item become selected. First idea was to change the selected item in the DeleteCommand BUT i think that it's not the job of the ViewModel, it's typically a job for the View. How can i implement this ? The goal is that View and ViewModel have no reference between them.

Hi,

How can I recalculate AggregateResults for group footers?
I know it can be accomplished by calling rebind method on grid but I cannot use it as it is changing order of items. Is there any other why to do that?

Bartosz

I have a list of zipcode objects that I bind to a datagridview based on a selection from a treeview, the treeview is unimportant other than only a subset of available zipcodes are bound to the grid at any one time.


where GetForZipPart has a function signature of:


I want to select items in the gridview based upon another list of ZipGeoCode objects that correspond to a dealer.  The dealer list may contain zipcodes from other zipparts that are not bound to the grid.  I do the selection like so:



so far so good, however now when an item is selected or deselected in the radgridview I want to add or remove it from the _dealerZipCodes in the most efficient manner.  I suspect i shoudl use the radgrdiview_selectionchanged event.  I am wondering if ther is a way to do this with observable collections?.  Any suggestions greatly appreciated and info how I can act only on the item(s) that were selected/deselected by accessing the

SelectionChangeEventArgs

would be great.

I'm not using MVVM.

Currently my radgrdiview_selectionchanged looks like the following:


Not very efficient.

Thanks for the help/direction.

For a visual of what I'm doing: http://www.metamorpho-sys.com/telerik/Capture.GIF

Jonathan

As the title,I find little message support this question. I saw that datapager support any Collection implement IEnum...,but when I Use it on a ItemControl, it dosen't work,dose it only surpport Telerik or which Telerik Control does it Support?

Best wishes to TelerikTeam,Thanks! 

Hey guys,

I'm trying to sync my selected gridview row with the ICollectionView. I have installed an older version (2010.2.924.35) and the new version 2011.2.712.35. The same implementation works with the older version and don't works with the new version.

So, let have a look at my code:

The code of the ViewModel:


The XAML-Code:


The Items the ItemsView contains are correctly displayed in the GridView. But the OnCurrentItemChanged-Event is only being raised on startup (this.ItemsView.CurrentItem is null at this moment).

What can I do to get it work?

Thank you very much!
Best regards from Germany