查询Xdocument

Question

我从Web服务获得一条肥皂消息作为Xdocument，并希望提取会话ID元素以供将来使用。我可以使用下面的代码循环响应，但是如何查询soap以返回sessionid

Dim dnas = From node In Responce.DescendantNodes _
       Select node


        For Each node In dnas
            If TypeOf node Is XElement Then
                Debug.Print(DirectCast(node, XElement).Name.ToString)
            Else
                Debug.Print(node.ToString)
            End If
        Next

肥皂：

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<CreateResponse xmlns="http://myweb.com/webservices">
<CreateResult>
    <ResultCode>0</ResultCode>
    <ResultDescription>Authentication Successful</ResultDescription>
    <sessionid>04e1b723-ff93-4af0-94f4-2245ccf11f42</sessionid>
  </CreateResult>
</CreateResponse>
</soap:Body>
</soap:Envelope>

Answer 1

XNamespace ws = "http://myweb.com/webservices";
string sessionId = (string)Response.Descendants(ws + "sessionId").FirstOrDefault();