//define action for navigation menu selection
void NavigationView_NavigationItemSelected(object sender, NavigationView.NavigationItemSelectedEventArgs e)
{
PackageManager manager = this.PackageManager;
PackageInfo info = manager.GetPackageInfo(this.PackageName, 0);
string version = ApplicationInfo.LoadLabel(PackageManager) + "\n" + info.VersionName;
switch (e.MenuItem.ItemId)
{
case (Resource.Id.nav_about):
Toast.MakeText(this, version, ToastLength.Long).Show();
break;
case (Resource.Id.nav_logout):
LoginService.Logout();
StartActivity(typeof(LoginActivity));
Finish();
break;
case (Resource.Id.nav_exit):
Finish();
break;
}
// Close drawer
drawerLayout.CloseDrawers();
}