从vb.net </key>中的XML文件中读取<key>

时间:2013-07-11 13:27:10

标签: .net xml vb.net loops xmldocument

我正在尝试只读取此XML文件中的值,而我无法找出正确读取此值的代码。

XML文件如下所示:

<ListBucketResult>
<Name>Files</Name>
<Prefix/>
<Marker/>
<MaxKeys>1000</MaxKeys>
<IsTruncated>false</IsTruncated>
<Contents>
<Key>tmp.png</Key>
<LastModified>2013-04-30T09:25:54.000Z</LastModified>
<ETag>"49e6d7e2967d1a471341335c49f46c6c"</ETag>
<Size>561</Size>
<StorageClass>STANDARD</StorageClass>
</Contents>
<Contents>
<Key>2013.png</Key>
<LastModified>2013-05-21T12:26:15.000Z</LastModified>
<ETag>"1eea6fda0ca03698efba7b045b5375f9"</ETag>
<Size>3665</Size>
<StorageClass>STANDARD</StorageClass></Contents>
</ListBucketResult>

我尝试使用的代码是:

   Dim XMLFile As String = tmpdir & "tmp.xml"
    Dim xmlDoc As New XmlDocument

    xmlDoc.Load(XMLFile) 'opens XML file

    Dim node As XmlNode = xmlDoc.SelectSingleNode("/ListBucketResult/Contents/Key") 

    For Each inst As XmlNode In node.ChildNodes

        For Each sProperty As XmlNode In inst.ChildNodes



            If sProperty.Name = "key" Then

                MessageBox.Show(sProperty.Value)
            End If

        Next
    Next

代码未返回Key的内容。谁能告诉我如何获取Key的文本内容?

3 个答案:

答案 0 :(得分:0)

我认为因为你已经指定了节点的路径,你应该只需要像

这样的东西
    Dim node As XmlNode = xmlDoc.SelectSingleNode("/ListBucketResult/Contents/Key")

    For Each inst As XmlNode In node.ChildNodes
        MessageBox.Show(inst.InnerText)
    Next

答案 1 :(得分:0)

我认为你可能会浪费几个处理器周期;你应该只需要:

Dim nodeList As XmlNodeList = xmlDoc.SelectNodes("//Contents/Key") 
For Each inst As XmlNode In nodeList
    MessageBox.Show(inst.InnerText)
Next

因为您已经在正确的XML节点上。

答案 2 :(得分:0)

这应该这样做并使用SelectNodes返回xml文件中的每个键(而您的代码只返回一个SelectSingleNode

    Dim XMLFile As String = tmpdir & "text.xml"
    Dim xmlDoc As New XmlDocument

    xmlDoc.Load(XMLFile) 'opens XML file

    Dim keyNodes = xmlDoc.SelectNodes("/ListBucketResult/Contents/Key")
    For Each singleKeyNode As XmlNode In keyNodes
        Debug.WriteLine(singleKeyNode.InnerText)
    Next

测试输出:

tmp.png
2013.png