ApplicationApiWithUserCreds.cs

D2LAppContextFactory appContextFactory = new D2LAppContextFactory();
ID2LAppContext appContext = appContextFactory.Create(appId, appKey);

UserContextProperties userContextProperties = new UserContextProperties() {
	UserId = myUserId,    // put your user ID here
	UserKey = myUserKey,  // put your user key here
	Scheme = "https",
	HostName = bsUrl,
	Port = port
};

ID2LUserContext userContext = appContext.CreateUserContext( savedProps: userContextProperties );
Uri endpoint = userContext.CreateAuthenticatedUri(...);
// call endpoint