private void ErrandsButton_Click(object sender, RoutedEventArgs e)
{
ManageErrandsPage manageErrands = new ManageErrandsPage();
this.NavigationService.Navigate(manageErrands);
}
private void NavigateBack()
{
ManageErrandsPage manageErrandsPage = new ManageErrandsPage();
this.NavigationService.Navigate(manageErrandsPage);
}