How to find The System is 16 Bit or 32 Bit Windows OS in ASP DOT NET

Whether the client is Win16 or Win32 based computer

Protected Sub btnWindowsOS_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnWindowsOS.Click
        If Request.Browser.Win16 = True Then
            Label1.Text = "My System is 16 Bit Windows OS"
        ElseIf Request.Browser.Win32 = True Then
            Label1.Text = "My System is 32 Bit Windows OS"
        End If
End Sub