CODEWITHSUNDEEP
c#.netwpfxamlapp.xaml
Remotec
Remotec

Reputation: 10758

How to open window directly after main application window

My app's main UI is in MainWindow.xaml.

Firstly - what is causing this to be the window the application opens on startup. It does not appear to be defined as a "starup object" and there does not appear to be any code that specifically launches this window.

I can make my login window appear when the app starts by in the loaded event of MainWindow.xaml defining a new "login.xaml" and telling it to show as a dialog. However, if I do this then MainWindow does not appear until Login has been closed.

What I want to achieve is when my app starts, the MainWindow appears and then on top of that the Login window is displayed modally.

How can this be done?

Upvotes: 0

Views: 547

Answers (3)

Eamonn McEvoy
Eamonn McEvoy

Reputation: 8986

  1. In app.xaml the following line defines the startup window, you can change it if you want

    StartupUri="MainWindowView.xaml"

  2. If you are following MVVM you can bind a command to the windows loaded event using System.Windows.Interactivity (otherwise simply create an event handler as the others have suggested)

    <i:Interaction.Triggers>
    <i:EventTrigger EventName="Loaded">
        <i:InvokeCommandAction Command="{Binding MyICommand}"/>
    </i:EventTrigger>
</i:Interaction.Triggers>

Upvotes: 0

brunnerh
brunnerh

Reputation: 184296

  1. The startup of the MainWindow is defined in App.xaml by default when creating a project in VS:

    <Application ...
             StartupUri="MainWindow.xaml">
    <Application.Resources>

    </Application.Resources>
</Application>

  2. Creating the dialogue in the Loaded event should work, just don't do it in the constructor where it is not yet loaded.

    Loaded="Window_Loaded"

    private void Window_Loaded(object sender, RoutedEventArgs e)
{
    new LoginDialogue().ShowDialog();
}

Upvotes: 3

ChrisF
ChrisF

Reputation: 137108

One way could be to add a Loaded event handler to your main window and in that display the login window:

this.Loaded += LoadedEventHander;


void LoadedEventHander(object sender, RoutedEventArgs e)
{
    // Show Login.xaml here.
}

Upvotes: 1

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