Private Sub MaskedTextBox1_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles MaskedTextBox1.LostFocus
If CType(Me.MaskedTextBox1.Text.Trim, Integer) > 95 Or CType(Me.MaskedTextBox1.Text.Trim, Integer) < 5 Then
MessageBox.Show("错误")
End If
End Sub