Question

可能重复：
Parse XML Elements with LINQ

我有一个XML文档，如下所示：

<?xml version="1.0" encoding="utf-8" ?>
<TestDataset xmlns="http://tempuri.org/TestDataset.xsd">
  <TaxRate>
    <Code>GST</Code>
    <Rate>0.05</Rate>
    <LastModified>2010-03-31T17:03:24.063-04:00</LastModified>
    <Deleted>0</Deleted>
    <AbbreviationEN>GST</AbbreviationEN>
    <AbbreviationFR>GST</AbbreviationFR>
    <GLSubCode>GST</GLSubCode>
  </TaxRate>
  <TaxRate>
    <Code>PST</Code>
    <Rate>0.08</Rate>
    <LastModified>2010-03-31T17:03:24.063-04:00</LastModified>
    <Deleted>0</Deleted>
    <AbbreviationEN>PST</AbbreviationEN>
    <AbbreviationFR>PST</AbbreviationFR>
    <GLSubCode>PST</GLSubCode>
  </TaxRate>
</TestDataset>

我正在尝试使用以下查询选择它的内容：

XDocument data = LoadTestData("TaxRate.xml");
var taxdata = (from x in data.Elements("TaxRate")
              select new
              {
                  Code = x.Element("Code").Value,
                  Rate = x.Element("Rate").Value,
                  AbbreviationEN = x.Element("AbbreviationEN").Value,
                  AbbreviationFR = x.Element("AbbreviationFR").Value,
                  GLSubCode = x.Element("GLSubCode").Value
               }).ToList();

但是我一直没有得到任何结果，LoadTestData正在加载XML文档。

Answer 1

您忘记包含命名空间：

XNamespace ns = "http://tempuri.org/TestDataset.xsd";
XDocument data = LoadTestData("TaxRate.xml");
var taxdata = (from x in data.Descendants(ns + "TaxRate")
              select new
              {
                  Code = x.Element(ns + "Code").Value,
                  Rate = x.Element(ns + "Rate").Value,
                  AbbreviationEN = x.Element(ns + "AbbreviationEN").Value,
                  AbbreviationFR = x.Element(ns + "AbbreviationFR").Value,
                  GLSubCode = x.Element(ns + "GLSubCode").Value
               }).ToList();

虽然XML文件中的命名空间是默认命名空间，但您仍需要将其包含在查询中。

Answer 2

您必须尊重命名空间：

XNamespace ns = "http://tempuri.org/TestDataset.xsd";
var taxdata = (from x in data.Elements(ns+"TaxRate")
          select new
          {
              Code = x.Element(ns+"Code").Value,
              Rate = x.Element(ns+"Rate").Value,
              AbbreviationEN = x.Element(ns+"AbbreviationEN").Value,
              AbbreviationFR = x.Element(ns+"AbbreviationFR").Value,
              GLSubCode = x.Element(ns+"GLSubCode").Value
           }).ToList();

LINQ to XML Select语句 - 无结果

2 个答案: