docs.descendants正在加载空

时间：2012-03-12 14:22:48

标签： c# asp.net xml linq

Linq Code 

                XDocument docs = XDocument.Load(new StreamReader(response.GetResponseStream()));

    List<string> books = docs.Descendants("INTEL")
   .Select(x => new {
           Title = (string) x.Element("TITLE"),
           Author = x.Element("INTEL_AUTH")
        })
.Select(x => new {
           Title = x.Title,
           FirstName = (string) x.Author.Element("FNAME"),
           MiddleInitial = (string) x.Author.Element("MNAME"),
           LastName = (string) x.Author.Element("LNAME"),
        })
.Select(x => string.Format("{0}: {1} {2} {3}",
                           x.Title,
                           x.FirstName, x.MiddleInitial, x.LastName))
.ToList();

XML * ** * ** * ** * ** 

   <Data xmlns="http://www.TestWebsite.com/schema/data" xmlns:dmd="http://www.TestWebsite.com/schema/data-metadata" dmd:date="2012-03-12">


   <Record userId="62972" username="j23" termId="99" dmd:surveyId="2144185">

   <dmd:IndexEntry indexKey="COLLEGE" entryKey="Business" text="Business"></dmd:IndexEntry>

   <dmd:IndexEntry indexKey="DEPARTMENT" entryKey="Business/Finance" text="Business/Finance"></dmd:IndexEntry>

   <INTEL id="20" dmd:lastModified="2012-02-09T13:01:09">   

        <STATUS>Published</STATUS>
        <TITLE> House Price Indices</TITLE>
        <VOLUME>32</VOLUME>
        <ISSUE>1</ISSUE>
        <PAGENUM>127-160</PAGENUM>
        <CONTYPE>Journal Article/Notes/Comments</CONTYPE>
        <SCALE></SCALE>
        <REFEREED>Refereed</REFEREED>
        <CLASSIFICATION>Discipline-based Scholarship</CLASSIFICATION>
        <INTELLCONT_AUTH id="20327331841">

            <FNAME>John</FNAME>
            <MNAME>M.</MNAME>
            <LNAME>Doe</LNAME>
        </INTELLCONT_AUTH>
        <PUBLISHER>Real Estate Economics</PUBLISHER>
        <AUDIENCE>International</AUDIENCE>
        <PUBLICAVAIL>Yes</PUBLICAVAIL>
        <PUBLICATION_CODE>Basic Research</PUBLICATION_CODE>
        <USER_REFERENCE_CREATOR>Yes</USER_REFERENCE_CREATOR>
    </INTELLCONT>
    <INTELLCONT id="20327360512" dmd:lastModified="2012-02-09T13:01:09" dmd:startDate="2011-12-01" dmd:endDate="2011-12-31">

   <STATUS>In Prep Not Yet Submitted</STATUS>

  <TITLE>Time on the Market over the Cycle: a Spatial Model</TITLE>

  <VOLUME></VOLUME>

  <ISSUE></ISSUE>

  <PAGENUM></PAGENUM>

  <CONTYPE>Journal Article/Notes/Comments</CONTYPE>

  <CONTYPEOTHER></CONTYPEOTHER>

  <SCALE></SCALE>

  <REFEREED>Refereed</REFEREED>

  <COPYRIGHT></COPYRIGHT>

  <CLASSIFICATION>Discipline-based Scholarship</CLASSIFICATION>

  <MERIT>Journal List</MERIT>

        <INTEL_AUTH id="13">
        <STUDENT_LEVEL></STUDENT_LEVEL>

        <FACULTY_NAME>62972</FACULTY_NAME>

            <FNAME>John</FNAME>

            <MNAME>M.</MNAME>

            <LNAME>Doe</LNAME>

            <INSTITUTION></INSTITUTION>

        </INTEL_AUTH>

        <INTEL_AUTH id="20327360514">

            <STUDENT_LEVEL></STUDENT_LEVEL>

        <FACULTY_NAME></FACULTY_NAME>

        <FNAME>Erik</FNAME>

        <MNAME></MNAME>

        <LNAME>deWit</LNAME>

        <INSTITUTION></INSTITUTION>

        </INTEL_AUTH>

            <INTEL_AUTH id="5">

        <STUDENT_LEVEL></STUDENT_LEVEL>

        <FACULTY_NAME></FACULTY_NAME>

        <FNAME>Xiao-Song</FNAME>

        <MNAME></MNAME>

        <LNAME>Liu</LNAME>

        <INSTITUTION></INSTITUTION>

        </INTEL_AUTH>

        <PUBLISHER></PUBLISHER>

    <PUBCTYST></PUBCTYST>

    <PUBCNTRY></PUBCNTRY>

        <WEB_ADDRESS></WEB_ADDRESS>

        <EDITORS></EDITORS>

        <ISBNISSN></ISBNISSN>

    <AGENCY></AGENCY>

        <AUDIENCE>International</AUDIENCE>

        <PUBLICAVAIL></PUBLICAVAIL>

        <SEA_GRANT></SEA_GRANT>

        <SEA_GRANT_PROJECTNUM></SEA_GRANT_PROJECTNUM>

    <PUBLICATION_CODE>Basic Research</PUBLICATION_CODE>

        <ABSTRACT></ABSTRACT>

    <REVIEW id="20327360516">

            <CITATION></CITATION>

        </REVIEW>

        <FULL_TEXT></FULL_TEXT>


        <USER_REFERENCE_CREATOR>Yes</USER_REFERENCE_CREATOR>

        <DTM_EXPSUB>December</DTM_EXPSUB>

        <DTD_EXPSUB></DTD_EXPSUB>

        <DTY_EXPSUB>2011</DTY_EXPSUB>

        <EXPSUB_START>2011-12-01</EXPSUB_START>

        <EXPSUB_END>2011-12-31</EXPSUB_END>

        <DTM_SUB></DTM_SUB>

    <DTD_SUB></DTD_SUB>
        <DTY_SUB></DTY_SUB>
        <SUB_START></SUB_START>
        <SUB_END></SUB_END>
        <DTM_ACC></DTM_ACC>
        <DTD_ACC></DTD_ACC>
        <DTY_ACC></DTY_ACC>
        <ACC_START></ACC_START>
        <ACC_END></ACC_END>
        <DTM_PUB></DTM_PUB>
        <DTD_PUB></DTD_PUB>
        <DTY_PUB></DTY_PUB>
        <PUB_START></PUB_START>
        <PUB_END></PUB_END>

    </INTEL>


            <INTEL id="243" dmd:lastModified="2012-02-09T13:01:09" dmd:startDate="2011-04-01" dmd:endDate="2011-04-30">

    <STATUS>Submitted/Under Review</STATUS>

    <TITLE> shopping centers</TITLE>

    <VOLUME></VOLUME>
        <ISSUE></ISSUE>
        <PAGENUM></PAGENUM>
        <CONTYPE>Journal Article/Notes/Comments</CONTYPE>
        <CONTYPEOTHER></CONTYPEOTHER>
        <SCALE></SCALE>
        <REFEREED>Refereed</REFEREED>
        <ORIG_RESEARCH></ORIG_RESEARCH>
        <COPYRIGHT></COPYRIGHT>
        <CLASSIFICATION>Discipline-based Scholarship</CLASSIFICATION>
        <MERIT></MERIT>

             <INTEL_AUTH id="24223270914">

        <STUDENT_LEVEL></STUDENT_LEVEL>

        <FACULTY_NAME>62972</FACULTY_NAME>

            <FNAME>John</FNAME>
            <MNAME>M.</MNAME>
            <LNAME>Doe</LNAME>

        <INSTITUTION></INSTITUTION>
        </INTEL_AUTH>

        <INTEL_AUTH id="16">

        <STUDENT_LEVEL></STUDENT_LEVEL>

        <FACULTY_NAME>89176</FACULTY_NAME>

        <FNAME>yna</FNAME>
<MNAME></MNAME>
            <LNAME>vei</LNAME>

            <INSTITUTION></INSTITUTION>

            </INTEL_AUTH>

    <INTEL_AUTH id="917">

    <STUDENT_LEVEL>Graduate</STUDENT_LEVEL>

        <FACULTY_NAME></FACULTY_NAME>
            <FNAME>gyu</FNAME>
            <MNAME></MNAME>

        <LNAME>Zhou</LNAME>

                    <INSTITUTION></INSTITUTION>

            </INTEL_AUTH>

            <PUBLISHER>JREFE</PUBLISHER>
        <PUBCTYST></PUBCTYST>
        <PUBCNTRY></PUBCNTRY>

            <WEB_ADDRESS></WEB_ADDRESS>
        <EDITORS></EDITORS>
        <ISBNISSN></ISBNISSN>

             <AGENCY></AGENCY>
        <AUDIENCE></AUDIENCE>
        <PUBLICAVAIL></PUBLICAVAIL>

          <SEA_GRANT></SEA_GRANT>
        <SEA_GRANT_PROJECTNUM></SEA_GRANT_PROJECTNUM>

           <PUBLICATION_CODE></PUBLICATION_CODE>
        <DESC></DESC>

           <ABSTRACT>of competing space.

                                                    是             

        <DTD_EXPSUB></DTD_EXPSUB>

        <DTY_EXPSUB></DTY_EXPSUB>

        <EXPSUB_START></EXPSUB_START>

        <EXPSUB_END></EXPSUB_END>

        <DTM_SUB>April</DTM_SUB>

        <DTD_SUB></DTD_SUB>

        <DTY_SUB>2011</DTY_SUB>

    <SUB_START>2011-04-01</SUB_START>

        <SUB_END>2011-04-30</SUB_END>

        <DTM_ACC></DTM_ACC>

        <DTD_ACC></DTD_ACC>

    <DTY_ACC></DTY_ACC>

    <ACC_START></ACC_START>

    <ACC_END></ACC_END>

        <DTM_PUB></DTM_PUB>
        <DTD_PUB></DTD_PUB>
        <DTY_PUB></DTY_PUB>

        <PUB_START></PUB_START>
        <PUB_END></PUB_END>

    </INTEL>

    <INTEL id="24" dmd:lastModified="2012-02-09T13:01:09" dmd:startDate="2011-04-01" dmd:endDate="2011-04-30">

        <STATUS>Submitted/Under Review</STATUS>

        <TITLE> House Prices</TITLE>

    <VOLUME></VOLUME>
        <ISSUE></ISSUE>

    <PAGENUM></PAGENUM>
        <CONTYPE>Journal Article/Notes/Comments</CONTYPE>

        <CONTYPEOTHER></CONTYPEOTHER>

        <SCALE></SCALE>

    <REFEREED>Refereed</REFEREED>

    <ORIG_RESEARCH></ORIG_RESEARCH>

    <COPYRIGHT></COPYRIGHT>

    <CLASSIFICATION>Discipline-based Scholarship</CLASSIFICATION>

        <MERIT>Journal List</MERIT>

        <INTEL_AUTH id="225">

        <STUDENT_LEVEL></STUDENT_LEVEL>
            <FACULTY_NAME>62972</FACULTY_NAME>

            <FNAME>John</FNAME>
            <MNAME>M.</MNAME>
            <LNAME>aDoe</LNAME>

            <INSTITUTION></INSTITUTION>

        </INTEL_AUTH>

        <INTEL_AUTH id="20327348226">
            <STUDENT_LEVEL></STUDENT_LEVEL>
            <FACULTY_NAME></FACULTY_NAME>
            <FNAME>Piet</FNAME>
            <MNAME></MNAME>
            <LNAME>Eichholtz</LNAME>
            <INSTITUTION></INSTITUTION>

    </INTEL_AUTH>

    <INTEL_AUTH id="20327348227">
            <STUDENT_LEVEL></STUDENT_LEVEL>
            <FACULTY_NAME></FACULTY_NAME>
            <FNAME>Thies</FNAME>
            <MNAME></MNAME>
            <LNAME>Lindenthal</LNAME>
            <INSTITUTION></INSTITUTION>

             </INTEL_AUTH>
        <PUBLISHER>AER</PUBLISHER>
        <PUBCTYST></PUBCTYST>
        <PUBCNTRY></PUBCNTRY>
        <WEB_ADDRESS></WEB_ADDRESS>
        <EDITORS></EDITORS>
        <ISBNISSN></ISBNISSN>
        <AGENCY></AGENCY>
        <AUDIENCE>International</AUDIENCE>
        <PUBLICAVAIL>Yes</PUBLICAVAIL>
        <SEA_GRANT></SEA_GRANT>
        <SEA_GRANT_PROJECTNUM></SEA_GRANT_PROJECTNUM>
        <PUBLICATION_CODE></PUBLICATION_CODE>
        <DESC></DESC>
        <ABSTRACT></ABSTRACT>
        <REVIEW id="20327348228">
            <CITATION></CITATION>
        </REVIEW>
        <FULL_TEXT></FULL_TEXT>
        <USER_REFERENCE_CREATOR>Yes</USER_REFERENCE_CREATOR>
        <DTM_EXPSUB></DTM_EXPSUB>

        <DTD_EXPSUB></DTD_EXPSUB>

        <DTY_EXPSUB></DTY_EXPSUB>
        <EXPSUB_START></EXPSUB_START>
        <EXPSUB_END></EXPSUB_END>
        <DTM_SUB>April</DTM_SUB>
        <DTD_SUB></DTD_SUB>
        <DTY_SUB>2011</DTY_SUB>
        <SUB_START>2011-04-01</SUB_START>
        <SUB_END>2011-04-30</SUB_END>
        <DTM_ACC></DTM_ACC>
        <DTD_ACC></DTD_ACC>
        <DTY_ACC></DTY_ACC>
        <ACC_START></ACC_START>
        <ACC_END></ACC_END>
        <DTM_PUB></DTM_PUB>
        <DTD_PUB></DTD_PUB>
        <DTY_PUB></DTY_PUB>
        <PUB_START></PUB_START>
        <PUB_END></PUB_END>

                    </INTEL>

            <INTEL id="280" dmd:lastModified="2011-05-24T15:31:40" dmd:startDate="2011-04-21" dmd:endDate="2011-04-21">
        <STATUS>Revising to Resubmit</STATUS>
        <TITLE>Hedonic Analysis of Price Elasticity of Demand: The Case of New Condominiums in Shenzhen, China </TITLE>
        <VOLUME></VOLUME>
        <ISSUE></ISSUE>
        <PAGENUM></PAGENUM>
        <CONTYPE>Other</CONTYPE>
        <CONTYPEOTHER>Manuscript</CONTYPEOTHER>
        <ORIG_RESEARCH></ORIG_RESEARCH>
        <COPYRIGHT></COPYRIGHT>
        <CLASSIFICATION>Discipline-based Scholarship</CLASSIFICATION>
        <MERIT>Journal List</MERIT>

        <INTEL id="20327342081">

            <STUDENT_LEVEL></STUDENT_LEVEL>

        <FACULTY_NAME>62972</FACULTY_NAME>
            <FNAME>John</FNAME>
            <MNAME>M.</MNAME>

            <LNAME>Doe</LNAME>
            <INSTITUTION></INSTITUTION>
        </INTEL_AUTH>
        <INTEL_AUTH id="20327342082">
            <STUDENT_LEVEL></STUDENT_LEVEL>
            <FACULTY_NAME></FACULTY_NAME>
            <FNAME>Yong</FNAME>
            <MNAME></MNAME>
            <LNAME>Chen</LNAME>
            <INSTITUTION></INSTITUTION>
        </INTEL_AUTH>
        <INTEL_AUTH id="20327342083">
            <STUDENT_LEVEL></STUDENT_LEVEL>
            <FACULTY_NAME></FACULTY_NAME>
            <FNAME>Dogan</FNAME>
            <MNAME></MNAME>
            <LNAME>Tirtiroglu</LNAME>
            <INSTITUTION></INSTITUTION>
        </INTEL_AUTH>
        <PUBLISHER>Journal of Housing Economics</PUBLISHER>
        <PUBCTYST></PUBCTYST>
        <PUBCNTRY>The Netherlands</PUBCNTRY>
        <WEB_ADDRESS></WEB_ADDRESS>
        <EDITORS></EDITORS>
        <ISBNISSN></ISBNISSN>
        <AGENCY></AGENCY>
        <AUDIENCE>International</AUDIENCE>
        <PUBLICAVAIL>Yes</PUBLICAVAIL>
        <SEA_GRANT></SEA_GRANT>
        <SEA_GRANT_PROJECTNUM></SEA_GRANT_PROJECTNUM>
        <PUBLICATION_CODE>Basic Research</PUBLICATION_CODE>
        <DESC></DESC>
        <ABSTRACT></ABSTRACT>
        <REVIEW id="20327342084">
            <CITATION></CITATION>
        </REVIEW>
        <FULL_TEXT></FULL_TEXT>
        <USER_REFERENCE_CREATOR>Yes</USER_REFERENCE_CREATOR>
        <DTM_EXPSUB></DTM_EXPSUB>
        <DTD_EXPSUB></DTD_EXPSUB>
        <DTY_EXPSUB></DTY_EXPSUB>
        <EXPSUB_START></EXPSUB_START>
        <EXPSUB_END></EXPSUB_END>
        <DTM_SUB>April</DTM_SUB>
        <DTD_SUB>21</DTD_SUB>
        <DTY_SUB>2011</DTY_SUB>
        <SUB_START>2011-04-21</SUB_START>
        <SUB_END>2011-04-21</SUB_END>
        <DTM_ACC></DTM_ACC>
        <DTD_ACC></DTD_ACC>
        <DTY_ACC></DTY_ACC>
        <ACC_START></ACC_START>
        <ACC_END></ACC_END>
        <DTM_PUB></DTM_PUB>
        <DTD_PUB></DTD_PUB>
        <DTY_PUB></DTY_PUB>
        <PUB_START></PUB_START>
        <PUB_END></PUB_END>
    </INTEL>
    <INTEL id="20327340032" dmd:lastModified="2012-02-09T13:01:09" dmd:startDate="2011-03-01" dmd:endDate="2011-03-31">
        <STATUS>Submitted/Under Review</STATUS>
        <TITLE>Empirical estimation of the option premium for residential redevelopment </TITLE>
        <VOLUME></VOLUME>
        <ISSUE></ISSUE>
        <PAGENUM></PAGENUM>
        <CONTYPE>Journal Article/Notes/Comments</CONTYPE>
        <CONTYPEOTHER></CONTYPEOTHER>
        <SCALE></SCALE>
        <REFEREED>Refereed</REFEREED>
        <ORIG_RESEARCH></ORIG_RESEARCH>
        <COPYRIGHT></COPYRIGHT>
        <CLASSIFICATION>Discipline-based Scholarship</CLASSIFICATION>
        <MERIT>Journal List</MERIT>
        <INTEL_AUTH id="20327340033">
            <STUDENT_LEVEL></STUDENT_LEVEL>
            <FACULTY_NAME>62972</FACULTY_NAME>
            <FNAME>John</FNAME>
            <MNAME>M.</MNAME>
            <LNAME>Doe</LNAME>
            <INSTITUTION></INSTITUTION>
        </INTEL_AUTH>
        <INTEL_AUTH id="20327340034">
            <STUDENT_LEVEL></STUDENT_LEVEL>
            <FACULTY_NAME></FACULTY_NAME>
            <FNAME>Katsiaryna </FNAME>
            <MNAME></MNAME>
            <LNAME>Salavei</LNAME>
            <INSTITUTION></INSTITUTION>
        </INTEL_AUTH>
        <INTEL_AUTH id="20327340035">
            <STUDENT_LEVEL></STUDENT_LEVEL>
            <FACULTY_NAME></FACULTY_NAME>
            <FNAME>S. K. </FNAME>
            <MNAME></MNAME>
            <LNAME>Wong</LNAME>
            <INSTITUTION></INSTITUTION>
        </INTEL_AUTH>
        <PUBLISHER>RSUE</PUBLISHER>
        <PUBCTYST></PUBCTYST>


    <PUBCNTRY></PUBCNTRY>
    -01-01</PUB_START>
        <PUB_END>2004-12-31</PUB_END>
    </INTEL>
</Record>
 </Data>

我添加了部分加载到doc.Load（响应）部分的XML。请检查并

我添加了部分加载到doc.Load（响应）部分的XML。请检查并

我添加了部分加载到doc.Load（响应）部分的XML。请检查并

3 个答案:

答案 0 :(得分：4)

你确定外壳是正确的，因为我确定XDocument是区分大小写的，在你的代码示例中你有“Intel”，你在下面的评论中有“INTEL”吗？

修改

好的，它可能是另一件事，这让我在过去就是命名空间声明。

检查此question的答案，看看是否有帮助。

修改

使用您的XML我可以执行以下操作：

 XDocument doc = XDocument.Load(@"C:\Temp\Test.xml");
 XName name = XName.Get("INTEL", "http://www.TestWebsite.com/schema/data");
 var nodes = doc.Root.Descendants(name);
 foreach (var node in nodes)
 {
       Console.WriteLine(node.Value);
 }
 Console.ReadLine();

并打印每个“INTEL”节点的值。但是，我确实需要修改xml以使其工作，我猜测因为你的XML实际上相当大，所以关闭标签有一些问题所以我关闭了那些然后XDocument可以加载文件。

如果你使用类似的代码返回后代，我不太清楚为什么你没有得到任何结果，看来你原来的问题文本已经消失了：（。

答案 1 :(得分：1)

//List<string> books = docs.Descendants("INTEL")

XNamespace ns = @"http://www.TestWebsite.com/schema/data";
List<string> books = docs.Descendants(ns + "INTEL")

答案 2 :(得分：1)

您问题中的代码不使用命名空间。你说你现在已经尝试过了，但是由于你没有用新代码更新问题，所以你已经尝试了什么。

我更喜欢使用XNamespace类型和+运算符，而不是调用XName.Get，但基本上两种方式都应该有效。这是一个简短但完整的程序显示工作：

using System;
using System.Linq;
using System.Xml.Linq;

class Program
{
    static void Main(string[] args)
    {
        XDocument doc = XDocument.Load("test.xml");
        XNamespace ns = "http://www.TestWebsite.com/schema/data";
        var query = doc.Descendants(ns + "INTEL");
        Console.WriteLine(query.Count()); // Prints 1
    }
}

XML（只是问题内容的缩减版）：

<Data xmlns="http://www.TestWebsite.com/schema/data" 
    xmlns:dmd="http://www.TestWebsite.com/schema/data-metadata" 
    dmd:date="2012-03-12">
 <Record userId="62972" username="j23" termId="99" dmd:surveyId="2144185">
   <dmd:IndexEntry indexKey="COLLEGE" entryKey="Business" text="Business">
   </dmd:IndexEntry>

   <INTEL id="20" dmd:lastModified="2012-02-09T13:01:09" />
 </Record>
</Data>
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