title: update data in sqlite
body: <p>I can't update my data with this code and my data in sqlite not change.</p>
  
  <pre><code>var path = ApplicationData.Current.LocalFolder.Path + @"\users.sqlite";
  var db = new SQLite.SQLiteConnection(path);
  
  var query = db.Table&lt;User&gt;().Where(c =&gt; c.ID == ID_countact_save).SingleOrDefault();
  query.Fname = Fname_TB.Text;
  query.Lname = Lname_TB.Text;
  query.Phone = Phone_TB.Text;
  query.Mobile = Mobile_TB.Text;
  query.Address = Address_TB.Text;
  query.Email = Email_TB.Text;
  </code></pre>