Question

<Report xmlns="Microsoft.SystemCenter.DataWarehouse.Report.Alert" xmlns:p1="w3.org/2001/XMLSchema-instance"; Name="Microsoft.SystemCenter.DataWarehouse.Report.Alert" p1:schemaLocation="Microsoft.SystemCenter.DataWarehou?Schema=True">
 <Title>Alert Report</Title>
 <Created>6/27/2013 9:32 PM</Created>
 <StartDate>6/1/2013 9:29 PM</StartDate>
 <EndDate>6/27/2013 9:29 PM</EndDate>
 <TimeZone>(UTC)</TimeZone>
 <Severity>Warning, Critical</Severity>
 <Priority>Low, Medium, High</Priority>
<AlertTable>
    <Alerts>
        <Alert>
               <AlertName></AlertName>
               <Priority></Priority>
        </Alert>
    </Alerts>
</AlertTable>
</Report>

所以我试图下拉警报子项下显示的节点列表。所以/ Report / AlertTable / Alerts。我以前做过非常相似但是在这种格式下由于某种原因它不起作用。有人能指出我正确的方向吗？

  XmlDocument Log = new XmlDocument();
        Log.Load("test.xml");
        XmlNodeList myLog = Log.DocumentElement.SelectNodes("//Report/AlertTable/Alerts");

        foreach (XmlNode alert in myLog)
        {
            Console.Write("HERE");
            Console.WriteLine(alert.SelectNodes("AlertName").ToString());
            Console.WriteLine(alert.SelectNodes("Priority").ToString());
            Console.Read();
        }

编辑：其中一个回复让我尝试使用一堆命名空间与p1，但没有这样的运气。

编辑：也没用：

    var name = new XmlNamespaceManager(log.NameTable);
    name.AddNamespace("Report", "http://www.w3.org/2001/XMLSchema-instance");
    XmlNodeList xml = log.SelectNodes("//Report:Alerts", name);

Answer 1

来自网站：

nodename    Selects all nodes with the name "nodename"
/           Selects from the root node
//          Selects nodes in the document from the current node that match the selection no matter where they are

所以我相信

"/AlertTable/Alerts"

可以工作，因为它将是“来自根节点”以及

"Report/AlertTable/Alerts"

XPath Site

Answer 2

想出这个傻瓜。它与“Microsoft.SystemCenter.DataWarehouse.Report.Alert”的命名空间有关。将此更改为任何内容，但不能正确读取XML。

        XmlDocument log = new XmlDocument();
        log.Load(@"C:\Users\barranca\Desktop\test.xml");
       // XmlNodeList xml = log.SelectNodes("//ns1:Alerts");

        var name = new XmlNamespaceManager(log.NameTable);
        name.AddNamespace("ns1", "Microsoft.SystemCenter.DataWarehouse.Report.Alert");
        XmlNodeList xml = log.SelectNodes("//ns1:Alert", name);



        foreach (XmlNode alert in xml)
        {
            Console.Write("HERE");
            XmlNode test = alert.SelectSingleNode("//ns1:AlertName",name);
            string testing = test.InnerText;
            Console.Write(testing);
        }

在XML中选择特定节点列表

2 个答案: