How can we use Custom MessageBox in SelectionChangedEvent of LongListSelector for Windows Phone 8

Question

Dear Sir/Madam,
How can we use Custom MessageBox in SelectionChangedEvent of LongListSelector for Windows Phone 8.
Actually my problem is that When i am using Custom  MessageBox in SelectionChangedEvent of LongListSelector,when i am click Open(Left Button) it's working fine and navigated correctly,But when i am Click the No(Right Button) then it stayed in same page
but all that page is in stuckup i mean that page is not working and not doing any event.
My C#.net Code
private async void userPageLongListSelector_SelectionChanged(object sender, SelectionChangedEventArgs e)
if (e.AddedItems.Count > 0)
if (userPageLongListSelector.SelectedItem == null)
return;
if (dbTenMin == null)
dbTenMin = new Database(ApplicationData.Current.LocalFolder, "tenMInDBSchema.db");
await dbTenMin.OpenAsync();
var res = (sender as LongListSelector).SelectedItem as _10Min._10MinClass.minUserPages;
var resIndex = (sender as LongListSelector).ItemsSource.IndexOf(userPageLongListSelector.SelectedItem);
string selectedPageName = res.userPages.ToString();
string selectedPageDesignUser = res.pageDesignUser.ToString();
int selectedIndex = resIndex;
CustomMessageBox messageBox = new CustomMessageBox()
Caption = "Message...!",
Message = "This form need offline datalist,Please load now.",
LeftButtonContent = "Open",
RightButtonContent = "No"
messageBox.Dismissed += (s1, e1) =>
switch (e1.Result)
case CustomMessageBoxResult.LeftButton:
string uidAndpwd = _10MinClass._10MinStaticClass.csUidAndPwd.ToString();
_10MinClass._10MinStaticClass.csDataListPageDetails = selectedPageDataDetailsForSchema.ToString();
_10MinClass._10MinStaticClass.csAllDataLists = offlineDataBaseDataListNam;
_10MinClass._10MinStaticClass.csNotCreatedSchemaNameOfDBList = notCreatedDataLists;
userPageLongListSelector.SelectedItem = null;
if (dbTenMin != null)
dbTenMin.Dispose();
dbTenMin = null;
NavigationService.Navigate(new Uri("/10MinformDataList.xaml", UriKind.Relative));
else
NavigationService.Navigate(new Uri("/10MinformDataList.xaml", UriKind.Relative));
break;
case CustomMessageBoxResult.RightButton:
break;
case CustomMessageBoxResult.None:
break;
default:
break;
messageBox.Show();
Same custom messagebox code working in Phone_BackKeyPress event i am writing the code in Right Button that e.OriginalSource.ToString(); then it is working fine.
But It is not working in Selection Changed Event in LongListSelector control in Windows Phone 8.
Please help me,as soon as possible.
Thanks & Regards,
SrinivaaS.

Answer 1

What happens if you leave the implementation for LeftButton empty as well , does the page gets stuck in that case also, if you press left button?
i.e.
CustomMessageBox messageBox = new CustomMessageBox()
Caption = "Message...!",
Message = "This form need offline datalist,Please load now.",
LeftButtonContent = "Open",
RightButtonContent = "No"
messageBox.Dismissed += (s1, e1) =>
switch (e1.Result)
case CustomMessageBoxResult.LeftButton:
break;
case CustomMessageBoxResult.RightButton:
break;
case CustomMessageBoxResult.None:
break;
default:
break;
messageBox.Show();
http://developer.nokia.com/community/wiki/Using_Crypto%2B%2B_library_with_Windows_Phone_8