Product of Two Numbers in VB.NET

A simple program that I wrote using Visual Basic NET to ask the user to give two numbers and then the program will compute the product of two numbers and display the results on the screen.

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Sample Program Output

Public Class Form1

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim a, b, product As Integer

        If TextBox1.Text = "" Then
            MsgBox("Cannot Be Empty. Try Again")
            TextBox3.Text = ""
        ElseIf TextBox2.Text = "" Then
            MsgBox("Cannot Be Empty. Try Again")
            TextBox3.Text = ""
            a = Val(TextBox1.Text)
            b = Val(TextBox2.Text)

            product = (a * b)

            TextBox3.Text = product
        End If
    End Sub

    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        TextBox1.Text = ""
        TextBox2.Text = ""
        TextBox3.Text = ""
    End Sub

    Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
    End Sub
End Class

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