Bind to TabItem IsSelected problems

[Adiel]

Hi
I have couple of tabs with ViewModel class for each.
I want to bind the IsSelected DP to a property in the VM.
Somehow the property not updated in the view model.

I've create a demo project very simple and straightforward.

The  xaml:

 <Grid x:Name="LayoutRoot"
          Background="White">
        <Controls:RadTabControl>
            <Controls:RadTabItem x:Name="tab1"
                                 Header="tab1"
                                 IsSelected="{Binding Tab1 }">
            </Controls:RadTabItem>
            <Controls:RadTabItem Header="tab2"
                                 x:Name="tab2"
                                 IsSelected="{Binding Tab2}" />
        </Controls:RadTabControl>
        <StackPanel HorizontalAlignment="Right"
                    Margin="0,0,40,0">
            <TextBlock Text="{Binding AA}" />
            <Button x:Name="Select"
                    Content="Select Tab 1"
                    Click="Select_Click" />
            <Button x:Name="Select1"
                    Content="Select Tab 2"
                    Click="Select1_Click" />
        </StackPanel>
    </Grid>

The code behinde:

 public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
            ViewModel = new vm();
        }

        public vm ViewModel
        {
            get { return DataContext as vm; }
            set { DataContext = value; }
        }
        private void Select_Click(object sender, RoutedEventArgs e)
        {
            ViewModel.Tab1 = true;
        }

        private void Select1_Click(object sender, RoutedEventArgs e)
        {
            ViewModel.Tab2 = true;
        }
    }

The view model:

 public class vm : INotifyPropertyChanged
    {
        private bool _tab1;
        private bool _tab2;
        public string AA
        {
            get
            {
                return Tab1 ? "Tab1" : "Tab2";
            }
            set { OnPropChanged("AA"); }
        }
        public bool Tab1
        {
            get { return _tab1; }
            set
            {
                _tab1 = value;
                OnPropChanged("Tab1");
                OnPropChanged("AA");
            }
        }
        public bool Tab2
        {
            get { return _tab2; }
            set
            {
                _tab2 = value;
                OnPropChanged("Tab2");
                OnPropChanged("AA");
            }
        }
        private void OnPropChanged(string propName)
        {
            if (PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(propName));
        }

        #region INotifyPropertyChanged Members

        public event PropertyChangedEventHandler PropertyChanged;

        #endregion
    }

Any ideas?
Thanks

[Vladislav]

Hello Adiel,

Can you please review the attached project?
Basically I just added "Mode=TwoWay" in the binding expressions for "IsSelected" properties of the RadTabItems.

Please, let us know if this solution works for you. 

Kind regards,
Vladislav
the Telerik team

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