Get token without app restart

Question

Hello folks!

I use the following login method in my WPF application.

1. User click on WPF desktop app login button, the wpf form disappears, a web browser opens up.
2. The user is redirected to the project web browser login form. At the same time WPF app closes down.
3. If the user enters right credentials the web app generates token that the WPF app intercepts on startup in the method below:

protected override void OnStartup(StartupEventArgs e)
{
if (Environment.GetCommandLineArgs().Length > 1)
{
// here I get token using Environment.GetCommandLineArgs() function
var token = Environment.GetCommandLineArgs()[1];

My question is. is it possible to get the token without restarting WPF app?

Any help is appreciated!

Answer 1

1. app.exe is running
2. browser starts another app.exe process like below
   start /c "app.exe" -token "XXX"
3. running app.exe process should intercept the generated token "XXX" from the app.exe process launched by browser. just token.
   • app.exe is a single instance wpf app.

Answer 2

1. Redirect to browser:
   public ICommand SignInCommand { get; }

public LoginViewModel(){
...
SignInCommand = new RelayCommand(SignIn);

private void SignIn()
{
loginUrl.OpenLink();
close app code

....
public static void OpenLink(this string link)
{
var psi = new ProcessStartInfo
{
FileName = link,
UseShellExecute = true
};
Process.Start(psi);
}

2. Getting token on start up in the App.xaml.cs.

protected override void OnStartup(StartupEventArgs e)
{
...
base.OnStartup(e);

if (Environment.GetCommandLineArgs().Length > 1)
{
GlobalSettings.Instance.AppToken = Environment.GetCommandLineArgs()[1];
_dialogService?.Show(ViewName.MAIN);
}
else
{
_dialogService?.Show(ViewName.LOGIN);
}

3. Registry file (installer set it up) when a user clicks a link in the webapp the wpf app is started and get a token via Environment.GetCommandLineArgs() function.

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\boseaudiodriver]
@="URL:webapp"
"URL Protocol"=""
"UseOriginalUrlEncoding"=dword:00000001

[HKEY_CLASSES_ROOT\webapp\DefaultIcon]
@="\"C:\Program Files\MyWPFApp\MyWPFApp.exe\",1"

[HKEY_CLASSES_ROOT\webapp\shell]

[HKEY_CLASSES_ROOT\webapp\shell\open]

[HKEY_CLASSES_ROOT\webapp\shell\open\command]
@="\"C:\Program Files\MyWPFApp\MyWPFApp.exe\" \"--url=%1\""