title: Return to previous page with refresh data Xamarin Forms
body: <p>in main page I have a button create post. When I click on it I receive editor. After input of some text I click button savePost. Then post saves to server and return to my main page, but without new post on my wall. I need to refresh that page to see my new post. How can I write code to receive my previous page with my new post on main page after clicking button savePost?</p>
  
  <pre><code>        Button savePost = new Button {Text = "Save post"};
          stackLayout.Children.Add(savePost);
          savePost.Clicked += (sender, args) =&gt;
          {
              var restService = new RestServiceImpl(UserService.User.AccessToken);
              PostView post = new PostView
              {
                  Text = textEditor.Text,
              };
              restService.CreatePost(post);
              Navigation.PopAsync();
          };
  </code></pre>