public void GetAllSubgroups()
 {
     using (FixedAssetsWebService.SubgroupServiceClient Client = new FixedAssetsWebService.SubgroupServiceClient())
     {
         Client.Open();
         object[] list = Client.GetAllSubgroups();
         foreach (Subgroup s in list)
         {
             subgroups.Add(s);
         }
     }
 }