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I’m using VB 2008. I need to
write a simple program that calculates total sales of purchases. The program should accept item costs as input calculate the tax on each item (8%) display the item cost, total cost, and total after taxes. Item costs will be added to a listbox while the total without the taxes will be displayed in a label, the tax amount in another label, and finally, the total cost (items cost + tax) in a third label.


Public Class Form1
Dim strTotal As Double = 0

Private Sub txtItemCost_Enter(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtItemCost.Enter

' select the Item Cost

End Sub

Private Sub btnAdd_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAdd.Click

' declare valiables
Dim strTaxAmt As Double
Dim strTotalTax As Double
Dim strItemCost As Double
Dim strTotal As Double

' add items listbox
strItemCost = CDbl(lstItemCosts.Text)
strTotal = strTotal + strItemCost ' add to running total

' calculates totals
strTaxAmount = strTotal * 0.08
strTotalWTax = strTotal + strTaxAmount

txtTotal.Text = strTotal
txtTaxAmount.Text = strTaxAmount
txtTotalWTax.Text = strTotalWTax

' insert a dollar sign as the first character
strTotal = strTotal(0, "$"), "Currency")
strTaxAmount = strTaxAmount(0, "$")

Private Sub btnExit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnExit.Click

End Sub

End Class

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