How to pass the result from a method into the constructor

Question

hey guys,

how can I access the result-string which is resulting in my method from my method on the same page? I don't want to make it pass into a second page by PushAsync(new SecondPage(string <result>) or something like that...

I just want to pass the data in the background and access them from one point to form them into a combined string for an interface purpose.