Beispiel #1
0
        protected void NavigationHelperSaveState(object sender, SaveStateEventArgs e)
        {
            if (e.PageState == null)
            {
                throw new InvalidOperationException("PageState is null");
            }

            if (e.PageState.ContainsKey(StateKey))
            {
                e.PageState.Remove(StateKey);
            }

            var state = SaveState();

            if (state != null)
            {
                e.PageState.Add(StateKey, state);
            }
        }
Beispiel #2
0
 /// <summary>
 /// Preserves state associated with this page in case the application is suspended or the
 /// page is discarded from the navigation cache.  Values must conform to the serialization
 /// requirements of <see cref="SuspensionManager.SessionState"/>.
 /// </summary>
 /// <param name="sender">The source of the event; typically <see cref="NavigationHelper"/></param>
 /// <param name="e">Event data that provides an empty dictionary to be populated with
 /// serializable state.</param>
 private void navigationHelper_SaveState(object sender, SaveStateEventArgs e)
 {
 }