Hello, Telerik Team! I began to study your library (trial), to see whether or not it is suitable for use in the production. And I have questions. Suppose we have RadGridView. One of the columns defined:

 <telerik:GridViewComboBoxColumn Width="250"
                                                Header="Класс"
                                                DataMemberBinding="{Binding CurrentFeatureClass}"
                                                ItemsSource="{Binding Path=FeatureClassesView, Mode=TwoWay}"
                                                Name="FeatureClassesGridComboBox"
                                                DisplayMemberPath="TypeName" />

In the model, which is the source of the data the FeatureClassesView is CollectionView for the ObservableCollection. But when I try to use SelectionChanged property of CollectionView it doesn't work. The items in the list I see, that is, binding occurred correctly. Previously, such a thing occurred, unless the property IsSynchronizedWithCurrentItem, But such a property, I just have not found (although it is DataGridComboBoxColumn in Microsoft standart library). Can you help me?

When I enter an invalid value for a property and attempt to move focus, RadGridView functions as expected. It accesses IDataErrorInfo.Item[propertyName] and holds focus until I enter a valid value or cancel the edit. I would expect it to behave in a similar manner with regard to IDataErrorInfo.Error and row edits. But it doesn't. It never accesses IDataErrorInfo.Error when row edits end. When I create a new row, it only validates the properties as I change them. So any invalid properties that I have not touched remain invalid, and the row edit is accepted.

How can I make it validate all columns and/or the entire entity when a row edit ends? I can't use your implementation of INotifyDataErrorInfo because the projects containing entities don't reference Telerik libraries. Do I have to manually handle the RowValidating event?

Some of the other interfaces my entity implements include...

• INotifyDataErrorInfo (local implementation to be replaced when .Net 4.5 is released)
• IRevertibleChangeTracking
• IEditableObject

When the tile view has got PreservePositionWhenMaximized set to True, it would have a funny layout behaviour when new item is added to the view maximized.

Below is simple test code to reproduce this, it looks ok when the first and second tile is added, but when the third tile is added, the minimized second tile is placed at the same position as the first minimized tile and covered it up:

Hi we are testing then new q2 version of your suite and found this issue.

I have a radCombobox with this configuration:

We fill the associated list from a wcf service, and the list retrieved sohw ok in the rad combo, but when i move on the first element of the combo by pressing the down arrow key, the combo closes and no one element is selected.

Thanks for your help

It was my fault, syntax error.

Now i'm able to navigate inside the results with the arrows keys, then, when i press the tab button the element is selected and his name remains in the editable zone of the combo, but if I press the enter key, the element is not selected netiher the control and my viewmodel object.

thanks

I am not sure what do you call the popup that shows when a new version is available to download. This would show up for couple of seconds and go away. 

We want to use this popup in out application as a reminder popup that would just show and hide instead of waiting for a response from the user. 

Anyone know what is this popup called and how to use this?

Any help is greatly appreciated. 

I am attaching the screen shot of it, just in case I don't make sense. 

Hi,

i'm workink with the wpf q2 2012 rad controls. I want to load a html in the RichTextBox named "editor". I can load text

So far ok, but all the images are not shown. How to use the LoadImageFromUrl Event? Can't find a working example.
And the second problem are the german words with "ä", "ü", "ö",.. They are shown as question mark.
Thanks
Regards
Rene

Hi,

i want to use radcombobox for autocomplete as Textbox with autocomplete =).
1. How to set visibitility for drop down button(arrow) to false?
2. How to drop down menu on text input with IsFilteringEnabled="True" ?

Best regards,
Dmitrijs Solovjovs

Hi,

I've some problem to manage one binding.

Here is my case:

I've a RadGridView, which basically allows me to sort/search/filter a datacollection, and then details are displayed and editable on the right of the radGridview.

One column is a GridViewImageColumn. This image represent the "status" of the element of the current row.

Here is my binding: 


To display the content of this column, I need a converter, which takes the whole current row, analyze it and give the correct image.

This choice is made on several fields(Enums, ObservableCollections, ...)

The converter is working good and display the correct icon, the problem, is that when something change(the most typical case is the ObservableCollection, which get a new element), the binding isn't aware of this change.

So I don't see how to update this fields:
-I don't think it's possible to have a Multiple data binding in the radGridView(if yes, I can bind every fields I use for the calculation, and then, when one change, I receive the change event and then the binding is automatically updated)
-In the code behind I get informed when I should update thoses fields, but I've no idea about how to ask to refresh one(or all) binding of the current row

So how can I do this??

Thank you for your help

I was wondering what the capabilities are of the Telerik charts.  I want to chart live data as fast as possible without losing performance.  The current way it is integrated, the performance is good, but after I like it chart for awhile, the performance starts to suffer and I start getting delayed responses and inaccuracies.  I am trying to figure out of this is normal for Telerik controls or if it's something with the code that's written.  Note: I am logging all the data as well to use for playback features, I realize this might be taking up system resources too? 

Microsoft Pro XP SP3
i5 3.60GHz
3.49 GB RAM
ATI FirePro V4800 GPU

If I have document panes in two RadPaneGroups, the dropdown list of open documents is only shown in the first group.  Is this by design? And if so would it be possible to have it displayed in all groups? I've attached an image illustrating the current problem.
Thanks in advance,
Steve