// method for calculate the total sales tax
public double TotalSalesTax()
{
// calculate the total sales tax amount
for (int i = 0; i < item.Length; i++)
{
tax = new Tax();
tax.CalculateTax(item[i]);
totaltax = totaltax + tax.TotalTaxAmount();
}
//return the rounded up to the nearest 0.05) amount of sales tax
return Math.Ceiling(totaltax * 20) / 20;
}
// Calculate the Toal TaxItem Amount
public Hashtable CaluculateToalTaxItemAmount()
{
//create hashtable for store the total amount and item name
Hashtable h = new Hashtable(item.Length);
for (int i = 0; i < item.Length; i++)
{
tax = new Tax(); // create object for each item
tax.CalculateTax(item[i]); // calculate the tax
tot = tax.TotalItemAmount(item[i].Price,item[i].NoOfItems);// get the total amount
h.Add(item[i].Name, tot); // Add in Hashatable
}
return h; // return heash table
}
// public cons for init the SalesItems values
public CalculateTax(SalesItems[] it)
{
tax = new Tax();
item = it;
}
