Public Class Form1
Dim x As Integer
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
x = 1
Timer1.Interval = 1000
Timer1.Start()
End Sub
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Label1.Left = Label1.Left + x * 100
If Label1.Left <= 0 Then
x = 1
End If
If Label1.Left + Label1.Width >= Me.Width Then
x = -1
End If
End Sub
End Class
已知有一个XML文件（bookstore.xml）如下：
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
<book genre="fantasy" ISBN="2-3631-4">
<title>Oberon's Legacy</title>
<author>Corets, Eva</author>
<price>5.95</price>
</book>
< ......
