void FilterUsername()
{
//create an instance of the booking collection
clsCustomerCollection C = new clsCustomerCollection(User.Identity.Name);
C.FilterbyUserName();
//set the data source to the list of bookings in the collection
lstCust.DataSource = C.CustomerList;
//set the name of the primary key
lstCust.DataValueField = "CustomerID";
//set the data field to display
lstCust.DataTextField = "Name";
//bind the data to the list
lstCust.DataBind();
}