private void txt_Surname_TextChanged(object sender, TextChangedEventArgs e)
{
connect = new CTUConnection(); // refreshens the 'CTUConnection' class //
connect.SelectCustomer(); //*Selects the specified columns in the Patient table*//
connect.SearchCustomerSurname(txt_Surname.Text); //Searches the customer's 'name' within the populated table//
DGV_Cust.ItemsSource = connect.dataset; //*All the selected fields are filtered inside the table and stored inside the grid-view*//
}
