CODEWITHSUNDEEP
c#.netwpftabcontrol
Adephx
Adephx

Reputation: 317

MoveFocus won't trigger on TabItem Header click event

DataGrid is located on Tab1. If I am located on Tab2 and I click on the Tab1 header the program switches to Tab1 and the DataGrid scrolls into view at the right position, but the selected Row won't get focused(highlighted) unless I click on the Tab1 header again. The rest of the code is triggering just fine.

CS

private void Tab1_Clicked(object sender, MouseButtonEventArgs e)
{
    if (dg_address.SelectedIndex > -1)
    {
        dg_address.ScrollIntoView(dg_address.Items[dg_address.SelectedIndex]);
        DataGridRow row = (DataGridRow)dg_address.ItemContainerGenerator.ContainerFromIndex(dg_address.SelectedIndex);
        row.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
    }
}

XAML

<TabControl x:Name="tab_control"
            HorizontalAlignment="Stretch"
            VerticalAlignment="Stretch"
            Background="#FFE5E5E5">

    <TabItem>
        <TabItem.Header>
            <Label Content="Seznam"
                   MouseLeftButtonDown="Tab1_Clicked"/>
        </TabItem.Header>

Upvotes: 1

Views: 100

Answers (1)

Adephx
Adephx

Reputation: 317

Found a solution here: https://social.msdn.microsoft.com/Forums/vstudio/en-US/3baa240a-c687-449e-af77-989ff4d78333/how-to-move-focus-to-a-textbox-in-a-tabcontrol-on-a-button-click?forum=wpf

private void Tab1_Clicked(object sender, MouseButtonEventArgs e)
{
    if (dg_address.SelectedIndex > -1)
    {
        dg_address.ScrollIntoView(dg_address.Items[dg_address.SelectedIndex]);
        Dispatcher.InvokeAsync(() =>
        {
            DataGridRow row = (DataGridRow)dg_address.ItemContainerGenerator.ContainerFromIndex(dg_address.SelectedIndex);
            row.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
        }
        );
    }
}

or

private void Tab1_Clicked(object sender, MouseButtonEventArgs e)
{
    if (dg_address.SelectedIndex > -1)
    {
        dg_address.ScrollIntoView(dg_address.Items[dg_address.SelectedIndex]);
        Dispatcher.BeginInvoke(DispatcherPriority.Background, new Action(() =>
        {
            DataGridRow row = (DataGridRow)dg_address.ItemContainerGenerator.ContainerFromIndex(dg_address.SelectedIndex);
            row.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
        }
        ));
    }
}

Edit: Optimized and removed a bug in the code.

Upvotes: 1

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