private void editDetailsBtn_Click(object sender, RoutedEventArgs e)
 {
     HdbbInfo hdbbToEdit = GetSelectedItem();
     if (hdbbToEdit != null)
     {
         Help.AddHospitalDoctorBloodBankWindow AddHdbbWindowObj = new Help.AddHospitalDoctorBloodBankWindow(hdbbToEdit);
         AddHdbbWindowObj.Show();
     }
 }
 private void addHospitalDoctorBloodBankBtn_Click(object sender, RoutedEventArgs e)
 {
     Help.AddHospitalDoctorBloodBankWindow AddHospitalDoctorBloodBankWindowObj = new Help.AddHospitalDoctorBloodBankWindow(null);
     AddHospitalDoctorBloodBankWindowObj.Show();
 }