title: Refreshing selected item ListView Xamarin Forms
body: <p>Im trying to refresh a selectedItem in the list view. I click an item in the list which navigates to another page including the items that are in the selected item. Then i update the details and click the save button. Then im navigated back to the listview page. </p>
  
  <p>The data is changed in the database but the selected item in the list view still shows the old value. </p>
  
  <p>How can I refresh the item that i changed?</p>
  
  <p>It shows the new value when i pull to refresh, but i need it to refresh when i click the save button which is in another content page. Please help me.</p>
  
  <pre><code>GuestInfo gi = new GuestInfo ();
  MessagingCenter.Send (this, "hi", "1");
  gi.guestDetailsUpdated ();
  </code></pre>
  
  <p>In the above section im adding the sending the information using message center, Which is in once content page.</p>
  
  <pre><code>    MessagingCenter.Subscribe(this, "hi", sender =&gt; {
              RetrieveReservationList();
          });
  </code></pre>
  
  <p>Above code is in another content page which should triger the mesage that was sent to identify the button click given from the other page to for this page to refresh. </p>
  
  <p>guestInfo is a content page.
  RetriveReservtionList is the method to get data.
  guestDetailsUpload is the method in the other content page which is triggered from the button clicked page.</p>