读取XML文件的节点内的内容

<?xml version="1.0" encoding="utf-8" ?>  
<data>  
  <tag3>15</tag3>  
  <tag6>14</tag6>  
</data>  

Private Function GetXML(ByVal name As String) As String  
        Dim path As String  
        Dim xx As String = ""  
        path = Application.StartupPath + "\xbd.xml" '文件的地址,相对位置  
        Try  
            Dim reader As New Xml.XmlTextReader(path)  
            reader.ReadToFollowing(name) '读取到文件指定的节点处,如tag3  
            xx = reader.ReadString       '读取里面的值  
            reader.Close()  
        Catch ex As Exception  
            xx = -1  
        End Try  
        Return xx  
    End Function