Cannot get WPF application to return to topmost app in window

Question

I'm using NotifyIcon to implement a "minimize icon to tray" feature in my WPF app. The minimize works just fine, however if I click "open", the icon will re-appear on the taskbar but the app doesn't re-appear. I'm setting the TopMost property to true (I've tried the two solutions below) but still no luck. Very new to desktop apps so any direction/theories much appreciated.

Code Behind

    private void TrayIconShowWindow_Click(object sender, RoutedEventArgs e)
    {
        WindowState = System.Windows.WindowState.Normal;
        Visibility = Visibility.Visible;

        // Neither of these work
        Application.Current.MainWindow.Topmost = true;
        Topmost = true;
    }

XAML

<taskbar:TaskbarIcon.ContextMenu>
    <ContextMenu>
        <MenuItem Header="Open Window" Click="TrayIconShowWindow_Click">
            <MenuItem.Icon>
                <Image Width="16" Height="16" Source="Assets/OpenScreen.png"/>
            </MenuItem.Icon>
        </MenuItem>
        <Separator/>
        <MenuItem Header="Exit" Click="TrayIconExitApp_Click">
            <MenuItem.Icon>
                <Image Width="16" Height="16" Source="Assets/Close.png"/>
            </MenuItem.Icon>
        </MenuItem>
    </ContextMenu>
</taskbar:TaskbarIcon.ContextMenu>

have you tried the first 2 againstApplication.Current.MainWindow ? as currently you are appling to the TaskbarIcon — MikeT, Apr 01 '16 at 16:05
How so? The `TrayIconShowWindow_Click` is in my main window class. — NealR, Apr 01 '16 at 16:09
Have you tried `myWindow.Activate();` `Topmost` is a setting so that the window is always the topmost but it doesn't display the window if minimized — Lithium, Apr 01 '16 at 16:14
@NealR If you select the item in the taskbar does it display? — CathalMF, Apr 01 '16 at 16:18
@CathalMF yes if I click the taskbar icon, when it reappears, the window will come up as expected. — NealR, Apr 01 '16 at 17:12

score 1 · Answer 1 · answered Apr 01 '16 at 16:13

1

Use the Activate method on the Window

private void TrayIconShowWindow_Click(object sender, RoutedEventArgs e)
{
    this.Activate();
}

answered Apr 01 '16 at 16:13

Glen Thomas

10,190
5
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Still getting the same result – NealR Apr 01 '16 at 16:15
How are you hiding the window? Just using the standard minimize button on the Window? – Glen Thomas Apr 01 '16 at 16:16
Using a `Window_StateChanged` event and setting the `Visibility=Visibility.HIdden` – NealR Apr 01 '16 at 17:30
@NealR Ah that will be your problem, every time you set the window back to visible, that event handler will hide it again!! – Glen Thomas Apr 01 '16 at 19:27

score 0 · Answer 2 · answered Apr 01 '16 at 16:19

0

Application.Current.MainWindow.WindowState = WindowState.Maximized;

answered Apr 01 '16 at 16:19

CathalMF

9,705
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Cannot get WPF application to return to topmost app in window

2 Answers2