void MyTrades_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) { if (VerifyHistory == 0) { bing.ServiceReference1.TranzactiiClient tc = new bing.ServiceReference1.TranzactiiClient(bind, endpoint); tc.GetToateAnimaleleAsync(); tc.GetToateAnimaleleCompleted += new EventHandler<bing.ServiceReference1.GetToateAnimaleleCompletedEventArgs>(tc_GetToateAnimaleleCompleted); tc.GetToateFirmeleAsync(); tc.GetToateFirmeleCompleted += new EventHandler<GetToateFirmeleCompletedEventArgs>(tc_GetToateFirmeleCompleted); b.IsBusy = true; VerifyHistory = 1; } else { b.IsBusy = true; IncarcaAnimale(); } }