Visual Basic 2008 - Issue after clicking CLEAR.......what am I doing wrong?!

Public Class FORM1
    Dim SID As String 'ID
    Dim SName As String 'Names
    Dim SAppadm As String 'Applied/Admissions
    Dim SGpa As String 'Current GPA
    Dim cntApplied As Integer
    Dim cntAccepted As Integer
    Dim cnt As Integer
    Dim fmtstr As String = "{0,10}{1,4}{2,-20}{3,14}{4,28}"
    Dim fmtstrN As String = "{0,4}{1,-10}{2,-23}{3,18}{4,23}"
 
    Private Sub btnProcess_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnProcess.Click
        btnClear.Focus()
        lstOut.Items.Add(String.Format(fmtstrN, "", "ID", "NAME", "App(A)/Adm(R)", "Current GPA"))
        FileOpen(1, "F:\HW2.txt", OpenMode.Input)
        Do While cnt < 15
            Input(1, SID)
            Input(1, SName)
            Input(1, SAppadm)
            Input(1, SGpa)
            cnt += 1
            lstOut.Items.Add(String.Format(fmtstr, SID, "", SName, SAppadm, SGpa))
            If SAppadm = "A" Then
                cntApplied += 1
            End If
            If SAppadm = "R" Then
                cntAccepted += 1
            End If
 
        Loop
        txtRecords.Text = cnt
        txtApplied.Text = cntApplied
        txtAccepted.Text = cntAccepted
        FileClose(1)
 
 
    End Sub
 
    Private Sub btnClear_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClear.Click
        txtAccepted.Clear()
        txtApplied.Clear()
        txtRecords.Clear()
        lstOut.Items.Clear()
        btnProcess.Focus()
    End Sub
 
    Private Sub btnQuit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnQuit.Click
        End
    End Sub
End Class