c# - 如何从 xml 引用 xsd 文件

Question

1) pls.xsd 文件

我在同一文件夹的 xml.xsd 中包含了 pls.xsd

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<!-- Externals changed by QTAssistant (http://www.paschidev.com) -->

<!--
  This is a draft schema for the XML language defined in the 
  Pronunciation Lexicon Specification 
  (latest version at <http://www.w3.org/TR/pronunciation-lexicon/>)
  At the time of writing, the specification as well as this schema are
  subject to change, and no guarantee is made on their accuracy or the fact
  that they are in sync.
  Last modified: $Date: 2007/12/11 12:08:40 $

  Copyright û 2006 World Wide Web Consortium, (Massachusetts Institute
  of Technology, ERCIM, Keio University). All Rights Reserved. See
    http://www.w3.org/Consortium/Legal/.
-->
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:p="http://www.w3.org/2005/01/pronunciation-lexicon"
targetNamespace="http://www.w3.org/2005/01/pronunciation-lexicon"
elementFormDefault="qualified" version="1.0">
<xs:annotation>
    <xs:documentation>Importing dependent namespaces</xs:documentation>
</xs:annotation>
<xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="xml.xsd" />

 ...
</xs:schema>

2)我的XML文件 我从这个文件中引用 pls.xsd

<?xml version="1.0" encoding="utf-8"?> 
<lexicon version="1.0"
xmlns="http://www.w3.org/2005/01/pronunciation-lexicon"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.w3.org/2005/01/pronunciation-lexicon
file://C:/xsdforproject/pls.xsd" 
alphabet="x-microsoft-ups" xml:lang="en-IN">
    <lexeme>

    </lexeme>
</lexicon>

我有以上两个代码，这些代码在我的 XML 和我的 pls.xsd 文件中都出现了错误， 打开外部“DTD”时发生错误

我正在使用“Visual Studio 2010”。

如何解决这个问题？

Answer 1

您正在使用的内容似乎引用了 XMLSchema.dtd，那么您是否尝试下载它并将其放在您的 xsdforproject 文件夹中？

http://www.w3.org/2009/XMLSchema/XMLSchema.dtd