Visual Basic

   <br />
Dim TotalCount As Integer = 30<br />
<br />
    Private Sub Seat1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Seat1.Click<br />
        Dim A As Integer = 0<br />
        While A < 1<br />
            Seat1.BackColor = System.Drawing.Color.Blue<br />
            A += 1<br />
            TotalCount -= 1<br />
<br />
        End While<br />
    End Sub<br />
<br />
 Private Sub SHOW_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SHOW.Click<br />
       <br />
        Label1.Text = TotalCount<br />
    End Sub

Please answer the following 2 questions, thank you in advance for your help.
1) I thought that TotalCount is a global variable and even though its being used in a private Sub, its should still be visible to the SHOW button, why does Label1 show that TotalCount is 30 and not 29?

2)  How do I group all the seat buttons together so that I can use just one requiredvalidator for all of them?