我正在尝试使用 XSD 架构验证 XML 文件,并且我想确定使用 XmlReaderSettings 及其 ValidationEventHandler 存在特定属性。
这是我正在尝试做的一个例子。每个元素都有两个属性,“this”和“that”。如果缺少或拼写错误,我想提出一个例外。目前,ValidationEventHandler 仅在元素名称无效时引发异常。
XML 文件:
<Addresses>
<Address this="fu1" that="bar" />
<Address this="fu2" />
<Address thiss="fu3" that="bar" />
</Addresses>
XSD 文件:
<?xml version="1.0" encoding="iso-8859-1" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:attribute name="this" type="xs:string"/>
<xs:attribute name="that" type="xs:string"/>
<xs:element name="Address">
<xs:complexType>
<xs:attribute ref="this" use="required"></xs:attribute>
<xs:attribute ref="that" use="required"></xs:attribute>
</xs:complexType>
</xs:element>
<xs:element name="Addresses">
<xs:complexType>
<xs:sequence>
<xs:element name="Address" maxOccurs="unbounded">
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
C#代码:
using System.Xml;
using System.Xml.Schema;
namespace test_validation
{
class Program
{
static void Main(string[] args)
{
string xsdpath = @"test.xsd";
string xmlpath = @"test.xml";
XmlReaderSettings settings = new XmlReaderSettings();
settings.Schemas.Add(null, xsdpath);
settings.ValidationType = ValidationType.Schema;
settings.ValidationEventHandler += new ValidationEventHandler(settingsValidationEventHandler);
XmlReader reader = XmlReader.Create(xmlpath, settings);
while (reader.Read()) { }
}
static void settingsValidationEventHandler(object sender, ValidationEventArgs e)
{
Console.WriteLine(e.Message);
}
}
}