Bind DelegateCommand from window and page on that window

[Valery Piashchynski]

Hello

I have a window (for example MainWindow), in that window situated SfDataGrid in Row 1, ond page, on Row 2:

<Grid Grid.Row="2">

            <Frame Source="MainButtonsBar.xaml" NavigationUIVisibility="Hidden" />

</Grid>

Scheme of windows is following MainWindow.xaml->MainButtonsBar.xaml -> Page1

                                                                                                                         -> Page2

MainButtonsBar.xaml contains ToggleButton:

<ToggleButton x:Name="ShowColumnChooser" Grid.Row="0" Grid.Column="1"

                          Command="{Binding ColumnChooserCommand}"

                          CommandParameter="ShowColumnChooser"

                          Content="ShowColumnChooser"

                          IsChecked="{Binding ShowColumnChooser}" />

In MainWindow i have Behaviors:

    <intty:Interaction.Behaviors>

        <local:MainWindowBehaviour />

    </intty:Interaction.Behaviors>

In Behavior i have following code:

            _mainWindowViewModel = (AssociatedObject.DataContext) as MainWindowViewModel;

            if (_mainWindowViewModel != null)

                _mainWindowViewModel.ColumnChooserCommand = new DelegateCommand<object>(ColumnChooserCommandHandler);

            InitializeColumnChooserPopup();

        private void InitializeColumnChooserPopup()

        {

            _chooserWindow = new ColumnChooser(AssociatedObject.GwMain);

            _chooserWindow.Resources.MergedDictionaries.Clear();

            _chooserWindow.ClearValue(FrameworkElement.StyleProperty);

            _chooserWindow.Resources.MergedDictionaries.Add(AssociatedObject.GwMain.Resources.MergedDictionaries[0]);

            AssociatedObject.GwMain.GridColumnDragDropController = new GridColumnChooserController(AssociatedObject.GwMain,_chooserWindow);

            _chooserWindow.Width = 300;

            _chooserWindow.Height = 600;

            _chooserWindow.AllowsTransparency = true;

            _chooserWindow.Show();

            _chooserWindow.Owner = AssociatedObject;

            _chooserWindow.Closing += ChooserWindow_Closing;

        }

When i click in that button i want to show ColumnChooser of SfDataGrid situated on MainWindow, but they not shown. Only when MainWindow fist time load triggers _chooserWindow.Show(); and ColumnChooser shows (only ones) and if i close it, columnChooser not shown by pressing button. If i place ToggleButton directly on MainWindow, all Ok and DelegateCommant route to nested event and i can open-close ColumnChooser multiply times.

Can you help me with that problem?

[Jai Ganesh S]

Hi Valery,

You can achieve your requirement for enable or disable the ColumnChooser window from another window by setting the DataContext for that window like the below code example,

private void Button_Click(object sender, RoutedEventArgs e)

{

     Window1 window = new Window1(this.DataContext);

     window.Show();

}

public partial class Window1 : Window

    {

        public Window1(object data)

        {

            InitializeComponent();

            this.DataContext = data;

        }

    }

Sample: http://www.syncfusion.com/downloads/support/directtrac/153710/ze/ColumnChooserDemo1022689704

Regards

Jai Ganesh S

[Valery Piashchynski]

Thank you for you answer, but problem in that i can not directly invoke window because button situated in page. Other words, i cant add dataContex by that way. Window in MainWindow is just contaider for pages. I try to set dataContex of MainWindow to parent in XAML, but its not working. Simply, than i try to set DataContex by foolowing code and all working:

this.DataContext = Application.Current.Windows.OfType<MainWindow>().Single().DataContext; (in ctor of child window)

First datacontex -> this is datacontex of child window with pages

Second -> Parent window

Thank you.

[Jai Ganesh S]

Hi Valery,

Thank you for the update.

Please let us know if you need further assistance on this.

Regards

Jai Ganesh S