private void cmbArea_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
cr.LoadFilteredGroupWithoutAllForAvailableProduct(int.Parse(cmbArea.SelectedValue.ToString()));
cmbGroup.SelectedIndex = 0;
}
private void cmbArea_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
cr.LoadFilteredGroupWithoutAllForAvailableProduct(int.Parse(cmbArea.SelectedValue.ToString()));
cmbGroup.SelectedIndex = 0;
}