private void Add_Button_Click_1(object sender, RoutedEventArgs e)
{
string centerName = Convert.ToString(Center_Name_textBox.Text);
string centerCapacity = Convert.ToString(Center_Capacity_textBox.Text);
string centerLocation = Convert.ToString(Center_Location_textBox.Text);
string centerCost = Convert.ToString(Center_Cost_textBox.Text);
string centerCatering = Convert.ToString(Center_Catering_textBox.Text);
CenterJobs.CenterModel newCenter = new CenterJobs.CenterModel(CenterModel.id(), centerName, centerCapacity, centerLocation, centerCost, centerCatering);
CenterJobs.CenterService cs = new CenterJobs.CenterService();
int i = cs.AddNewCenter(newCenter);
MainWindow mw = new MainWindow();
mw.centerDataGrid.ItemsSource = cs.LoadData();
this.Close();
}