Hello Jimmy,

In your scenario, do you need to talk with the server before the login? If not, then presumably you can generate the web server URL based on the company code in the client.

If that's the case, I'd suggest you to add a text field in the same login form, i.e., above the user name field. This avoids unnecessary complexity and also provides a good experience for your users. I'd imagine that you can capture the company code in the LoginViewModel and then generate the web server URL respectively. You can then easily override the appSetting's WebServerUrl in the method by resolving the instance of the setting through the following code:

var settings = Container.Current.Resolve<AppSettings>;
settings.WebServerUrl = GenerateServerUrl(companyCode);

Once the desired properties are set to the app settings, the subsequent call to the service will honor the new values.

Hope this helps!

if (!this.ActivationService.IsActivated())
{
    // Inside this viewmodel, a company code will be accepted from user's input. 
    // The company code will be validated. Once confirmed valid, the details to
    // construct the Url for Crosslight's services will be retrieved and stored
    // to the device for future reference. Then, the Url will be generated and
    // assigned to the WebServerUrl and BaseAppUrl respectively. Afterwhich, the
    // user will be redirected to the LoginView via HomeViewModel.
    this.SetRootViewModel<ActivationViewModel>();
}
else
{
    // Initialize the AppSettings here.
    var appSettings = Container.Current.Resolve<AppSettings>;
    appSettings.WebServerUrl = this.ActivationService.GetStoredWebUrl();
    appSettings.BaseAppUrl = appSettings.WebServerUrl + this.ActivationService.GetStoredAppName();
    appSettings.BaseImageUrl = appSettings.BaseAppUrl + "/images/";
    appSettings.RestServiceUrl = appSettings.BaseAppUrl + "/data/Inventory";
    appSettings.IdentityServiceUrl = appSettings.BaseAppUrl + "/data/Identity";
    appSettings.PushNotificationServiceUrl = appSettings.BaseAppUrl + "/data/PushNotification";
	
    // Initialize the account service
    this.AccountService.Initialize(typeof(LoginViewModel));

    // Set the root ViewModel to be displayed at startup
    if (!this.AccountService.IsLoggedIn())
    {
        // Not logged-in, redirect user to the home page
        this.SetRootViewModel<HomeViewModel>();
    }
    else
    {
        // Redirect user to main UI
        this.SetRootViewModel<DrawerViewModel>();
    }

    // Push notification registration.
    this.RegisterDeviceForPushNotification();   
}

Hello Jimmy,

Looking at your code, it supposed to work correctly. I also presume that you already have the appSettings registered in the constructor (which set other settings). As long as the appSettings was previously registered, you will then be able to resolve it at any point of your application, including OnStart method. The changes you made to the appSettings in the OnStart will persist automatically (as it's instance member assignment).

If you still encounter issue, feel free to post the error details so we can help to investigate what could be missing.

Hope this helps.

Please find my simple sample which I uploaded to OneDrive. The sample is created using business project template. I modified LoginViewModel.cs and IdentityController.cs file where I add method (GenerateServerUrl) and override AppSettings's WebServerUrl.

Feel free to let me know whether it helps or not.

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