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 HOW TO USE MESSAGE BOX TO DISPLAY OUTPUT FROM A SELECTION CASE IN VB




Public Class Form1
    Dim mark As Double
    Private Sub txtTest_TextChanged(sender As Object, e As EventArgs) Handles txtTest.TextChanged

    End Sub

    Private Sub btnok_Click(sender As Object, e As EventArgs) Handles btnok.Click
        mark = Double.Parse(txtTest.Text)

        Select Case (mark)
            Case 0 To 49
                MsgBox("Fail!", MsgBoxStyle.Information, "COMMENT")
            Case 50 To 64
                MsgBox("Pass", MsgBoxStyle.Information, "COMMENT")
            Case 65 To 74
                MsgBox("Credit", MsgBoxStyle.Information, "COMMENT")
            Case 75 To 100
                MsgBox("Distinction", MsgBoxStyle.Information, "COMMENT")
            Case < 0
                MsgBox("Invalid! Cannot be less than 0", MsgBoxStyle.Information, "COMMENT")
            Case > 100
                MsgBox("Invalid! Cannot be greater than 100", MsgBoxStyle.Information, "COMMENT")
        End Select

    End Sub
End Class


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