public void ReportByCarColour()
{
clsCarsCollection AllCars = new clsCarsCollection();
clsCarsCollection FilteredCarColour = new clsCarsCollection();
FilteredCarColour.ReportByCarColour("");
Assert.AreEqual(AllCars.Count, FilteredCarColour.Count);
}
protected void btnApplyCarColour_Click(object sender, EventArgs e)
{
string Filter = txtFilterCarMake.Text;
clsCarsCollection Cars = new clsCarsCollection();
Cars.ReportByCarColour(Filter);
lstCarList.Items.Clear();
lstCarList.DataSource = Cars.CarList;
lstCarList.DataValueField = "CarNo";
lstCarList.DataTextField = "CarMake";
lstCarList.DataBind();
}