void Update()
{
//create an instance of the car log
Class_Library.clsCarCollection CarLog = new Class_Library.clsCarCollection();
//validate the date on the web form
String Error = CarLog.ThisCar.Valid(txtCarName.Text, txtModel.Text, txtBodyType.Text, txtYearMade.Text);
//if the data is OK then add it to the object
if (Error == "")
{
//find the record to update
CarLog.ThisCar.Find(CarID);
//get the data entered by the user
CarLog.ThisCar.CarName = txtCarName.Text;
CarLog.ThisCar.Model = txtModel.Text;
CarLog.ThisCar.BodyType = txtBodyType.Text;
CarLog.ThisCar.Price = Convert.ToDecimal(txtPrice.Text);
CarLog.ThisCar.Stock = Convert.ToInt32(txtStock.Text);
CarLog.ThisCar.YearMade = Convert.ToDateTime(txtYearMade.Text);
CarLog.ThisCar.Fuel = chkDiesel.Checked = true;
CarLog.ThisCar.Fuel = chkPetrol.Checked = false;
CarLog.ThisCar.ColourNo = Convert.ToInt32(ddlColourNo.SelectedValue);
//update the record
CarLog.Update();
//all done to redirect back to the main page
Response.Redirect("DefaultCar.aspx");
}
else
{
//report an error
lblError.Text = "there were problems with the data entered" + Error;
}
}
void DisplayCars()
{
//create an instance of the Car Collection
Class_Library.clsCarCollection CarLog = new Class_Library.clsCarCollection();
//set the data source to the list of cars in the colllection
lstCars.DataSource = CarLog.CarList;
//set the name of the primary key
lstCars.DataValueField = "CarID";
//set the data field to display
lstCars.DataTextField = "Model";
//bind the data to the list
lstCars.DataBind();
}