/// <summary>
/// Method check is command enabled.
/// </summary>
private void _CheckEnabled()
{
Schedule schedule = _optimizeAndEditPage.CurrentSchedule;
bool hasOrders = ((schedule != null) && (schedule.UnassignedOrders != null) &&
((schedule.UnassignedOrders.Count > 0) || ScheduleHelper.DoesScheduleHaveBuiltRoutes(schedule)));
AsyncOperationInfo info = null;
bool canBuildRoutesBeStarted = _CanBuildRoutesBeStarted(out info);
bool isPageStateAllowRouting = (hasOrders && (schedule.Routes.Count > 0) &&
!_optimizeAndEditPage.IsEditingInProgress && !_optimizeAndEditPage.IsLocked && !_DoesAllRoutesLocked());
// AllowDisabledExecution should be "false" if editing in progress.
AllowDisabledExecution = isPageStateAllowRouting;
IsEnabled = (isPageStateAllowRouting && canBuildRoutesBeStarted);
}