一个关于xmlReaderSettings类的问题

beautiful_melody 2010-11-19 11:13:12

窗口中有两个控件 richTextBox1 和button5 单击button5程序出现异常，程序目的是用books.xsd文件
来验证books.xml的内容是否合乎规格。



private void button5_Click(object sender, EventArgs e)

        {

            richTextBox1.Clear();

            XmlReaderSettings settings = new XmlReaderSettings();

            settings.Schemas.Add(null, @"C:\123\books.xsd");

            settings.ValidationType=ValidationType.Schema;

            settings.ValidationFlags = XmlSchemaValidationFlags.ProcessInlineSchema;

            settings.ValidationEventHandler += new System.Xml.Schema.ValidationEventHandler(settings_ValidationEventHander);

            XmlReader rdr = XmlReader.Create(@"C:\123\books.xml", settings);

            while (rdr.Read())

            {

                if (rdr.NodeType == XmlNodeType.Text)

                    richTextBox1.AppendText(rdr.Value + "\r\n");

            }

        }

        private void settings_ValidationEventHander(object sender, System.Xml.Schema.ValidationEventArgs e)

        {

            MessageBox.Show(e.Message);

        }

books.xml为如下:



<?xml version="1.0" encoding="utf-8"?>

<books>

  <book>

    <title>魔兽世界</title>

    <author>Aresars</author>

    <code>7582</code>

  </book>

  <book>

    <title>C#入门经典</title>

    <author>史密斯</author>

    <code>7043</code>

  </book>

</books>

books.xsd验证文件为:



<schema xmlns="http://www.w3.org/2001/XMLSchema">

  <element name="books">

    <complexType>

      <choice maxOccurs="unbounded">

        <element name="book">

          <complexType>

            <sequence>

              <element name="title" />

              <element name="author" />

              <element name="code" />

            </sequence>

          </complexType>

        </element>

      </choice>

      <attribute name="schemalocation" />

    </complexType>

  </element>

</schema>

设置断点问题提示为 while (rdr.Read())行在运行若干次循环后开始出错并提示
"未处理 System.InvalidOperationException
Message="尚未验证完所有元素时，不能调用“EndValidation”方法。可能会缺少与“ValidateElement”调用相应的“ValidateEndElement”调用。"
Source="System.Xml"
StackTrace:
----省略----

...全文