How to check if a player loged in sucessfully ?

Hey there !

Im currently developing an mutliplayer game using Playfab. When the player types in his username and password, it is using this :

//---------------------------//
//        Register Tasks     //
//---------------------------//




PlayFabSettings.TitleId = "5A81";

PlayFabClientModels.RegisterPlayFabUserRequest registerUserRequest = new PlayFabClientModels.RegisterPlayFabUserRequest();

registerUserRequest.DisplayName = "genarTheAdmin";
registerUserRequest.Username = "genarTheAdmin";
registerUserRequest.Password = "------";
registerUserRequest.TitleId = "YouWontSeeIt";

registerUserRequest.RequireBothUsernameAndEmail = false;

registerTask = RegisterPlayFabUserAsync(registerUserRequest);

Thread registerThread = new Thread(registerTask);
registerThread.start();




//---------------------------//
//         Login Tasks       //
//---------------------------//




PlayFabClientModels.LoginWithPlayFabRequest playFabRequest = new PlayFabClientModels.LoginWithPlayFabRequest();

playFabRequest.Username = "genarTheAdmin";

playFabRequest.Password = "------";

playFabRequest.TitleId = "YouWontSeeIt";


loginTask = LoginWithPlayFabAsync(playFabRequest);



Thread thread = new Thread(loginTask);

thread.start();

For signing in. As far as i know, Playfab checks if the Account is already created, if not it just creates a new one, if theres already one, the task will just be ignored.

But when i try to login in, how do i check if the player is loged in sucessfully ?