When the editor becomes active, the contextualgroup IsActive is set to true and RibbonTab appear visible. When user selects it, it looks like in "before" picture. Everything ok. But when in this time the editor is closed, IsActive is set to false, but no other RibbonTab is automatically selected and in appears like in "after" picture. In the samples, i have not seen any special source code to select to another RibbonTab in this case. What is necessary to do in this case and how to define RibbonTab to be selected when ContextualGroup.IsActive is set to false?

Thanks, Ivo Kovacka

Hi,

I need to hide a RadWindow completely and have tried multiple ways but they do not give the expected result. In fact, I have tried minimizing the window and hiding the icon from the taskbar (but I haven't found such a method in the documentation), or setting the visibility to Hidden but none of those completely hide the Window. How is it possible to hide a window, other than by closing it?

Kind regards,

Alexandre

telerik version - 2018.2.515.40

Check box tick color in GridViewCheckBoxColumn does not react to Expression Dark theme when it is in view mode.

I have a RadComboBox trying out the new AllowMultipleSelection feature but the problem is that it keeps auto-selecting an item in the ItemsSource on first display even though the control was initialized to have nothing selected and the user never had a chance to select anything. The SelectionChanged event doesn't capture this first stealth selection so all my viewmodel selection state is screwed up.

Is there a way to stop it?

In a pivot grid,if I have a numeric field in the "Row Labels", I can use the "Select step" feature to group the values. However, how do I supply a min and a max like I can do in Excel's "Group by" feature? The reason I want this is that my data has some outliers and I want to collapse them into a single group like "> 100" or "< 0" instead of excluding them.

Thanks

Hey,

Am I able to set some spacing or border/brush line between only main tasks?

Hey, 

In my scenario I have one ScheduleView which takes data from 2 places:

a) Google Calandar (iCal)

b) my own database.

I would like to disable delete option for appointments from Google, but allow to delete from my Database.

Is there any chance for me?

Hi,

I'm having trouble applying both FitColumnWidthToContent and CellTextAlignment.

Re: FitColumnWidthToContent , I'm using a custom data provider. It obtains its data through a 2-step process. First, to help clean up memory (the grid is being used essentially as a pivot table and so it gets heavy use), the existing collection is cleared and the associated custom data property is nullified prior to each load:

CustomData?.Clear();
CustomDataProvider = null;

Then the data is reloaded via CustomData = PivotsDB.RetrieveData();

Both CustomData and CustomDataProvider are properties that call RaisePropertyChanged() as per your ViewModelBase helper class.

As a consequence of this setup, the Loaded event for my RadVirtualGrid only fires once, i.e. the fist time the grid is loaded.

To implement your suggested code re: FitcolumnWidthToContent, I therefore created a private method:

private void DataChanged(object sender, PropertyChangedEventArgs e)
        {
            if (e.PropertyName.Equals("CustomData"))
                return;
            for (int i = 0; i < RadVirtualGrid1.InitialColumnCount; i++)
            {
                RadVirtualGrid1.FitColumnWidthToContent(i);
            }
        }

...and registered this method in the code-behind file:

            InitializeComponent();
            var mvm = Application.Current.MainWindow.DataContext as MainWindowViewModel;
            PivotsViewModel vm = mvm.CurrentPageViewModel as PivotsViewModel;
            vm.PropertyChanged += DataChanged;

I have confirmed that my DataChanged method is firing, but it has no effect on the column sizes. And, yes, I have set my MeasureTextOnRender="True".

The problem with CellTextAlignment is much more straightforward. I'm using your recommended code as follows:

private void RadVirtualGrid1_CellDecorationsNeeded(object sender, Telerik.Windows.Controls.VirtualGrid.CellDecorationEventArgs e)
        {
            e.CellTextAlignment = TextAlignment.Right;
        }

...but CellTextAlignment is not a member of CellDecorationEventArgs, and if it is an extension method, VS isn't helping me find it.

Wayne

Have a bit of an odd situation. I have two AutoCompleteBoxes. Both are bound are in a near-identical manner, the only difference being that the 2nd one is bound to a filtered view of the data bound to the 1st box:

Box 1: ItemsSource="{Binding SearchRecords}" DisplayMemberPath="SearchValue" SelectedItem="{Binding SearchBox1SelectedItem, Mode=TwoWay}"

Box 2: ItemsSource="{Binding SearchRecords2View}" DisplayMemberPath="SearchValue" SelectedItem="{Binding SearchBox2SelectedItem, Mode=TwoWay}"

After the second selection is made, I take some query actions, which work correctly. I then attempt to blank both boxes to clear the slate for the next user action:

SearchBox1SelectedItem = null;
SearchBox2SelectedItem = null;

Both property setters handle this in the same way:

if (_searchBox1SelectedItem != value)
                {
                    _searchBox1SelectedItem = value;
                    RaisePropertyChanged();
                }

 if (_searchBox2SelectedItem != value)
                {
                    _searchBox2SelectedItem = value;
                    RaisePropertyChanged();
                }

The effect on the SearchBox1 is as expected, i.e. the box clears itself, as shown in its properties as per AutoCompleteBox1.jpg, attached.

But this does not happen as expected for SearchBox2. Instead, it seems to have made an aborted attempt to clear itself, as per AutoCompleteBox2.jpg. Note how the SelectedItem value for SearchBox2 has been nullified, as intended, but it retains 1 record in its SelectedItems list, and also note how its SearchText, which is set to "Bil", should in fact be "Billy Joel", which is what still appears in the Search Box.

Any ideas?

Dear

I have a rad grid with a detail table, some of the rows have detail row, some of them have none and I want to edit a cell and go throw the whole grid with enter or tab key.
I want to the master row automatically expand when it gets the focus and it has any detailed row. And if its possible i want to make it not from code behind, but with xaml triggers or any other way. 
Is there an easy way to do this?

(My version: 2016.3.1309, please let me know if the solution is implemented in a newer version)