xml validate does not catch tag mismatch between open and close tags

[vihrao]

I am using xml validation of a file with schema. I cannot catch mismatch between open and close tags.

 

Here is the c# code:

XmlSchema xmlSchema = XmlSchema.Read(new XmlTextReader("XMLSchema1.xsd"), new ValidationEventHandler(booksSettingsValidationEventHandler));

XmlReaderSettings xmlReaderSettings = new XmlReaderSettings();

xmlReaderSettings.ValidationType = ValidationType.Schema;

xmlReaderSettings.Schemas.Add(xmlSchema);

xmlReaderSettings.ValidationEventHandler += new ValidationEventHandler(booksSettingsValidationEventHandler);

using (XmlReader xmlReader = XmlReader.Create(new XmlTextReader("XMLFile1.xml"), xmlReaderSettings))

while (xmlReader.Read()) ;

 

Here is the validator:

static void booksSettingsValidationEventHandler(object sender, ValidationEventArgs e)

{

if (e.Severity == XmlSeverityType.Warning)

{

Console.Write("WARNING: ");

Console.WriteLine(e.Message);

}

else if (e.Severity == XmlSeverityType.Error)

{

Console.Write("ERROR: ");

Console.WriteLine(e.Message);

}

}

Here is the XMLSchema1.xsd schema:

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

<!--Created with Liquid XML Studio Developer Edition (Trial) (http://www.liquid-technologies.com)-->

<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.contoso.com/books" xmlns:xs="http://www.w3.org/2001/XMLSchema">

<xs:element name="bookstore">

<xs:complexType>

<xs:sequence>

<xs:element maxOccurs="unbounded" name="book">

<xs:complexType>

<xs:sequence>

<xs:element name="title" type="xs:string" />

<xs:element name="author">

<xs:complexType>

<xs:sequence>

<xs:element minOccurs="0" name="name" type="xs:string" />

<xs:element minOccurs="0" name="first-name" type="xs:string" />

<xs:element minOccurs="0" name="last-name" type="xs:string" />

</xs:sequence>

</xs:complexType>

</xs:element>

<xs:element name="price" type="xs:decimal" />

</xs:sequence>

<xs:attribute name="genre" type="xs:string" use="required" />

<xs:attribute name="publicationdate" type="xs:unsignedShort" use="required" />

<xs:attribute name="ISBN" type="xs:string" use="required" />

</xs:complexType>

</xs:element>

</xs:sequence>

</xs:complexType>

</xs:element>

</xs:schema>

 

Here is the XMLFile1.xml file:

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

<bookstore xmlns="http://www.contoso.com/books">

<book genre="autobiography" publicationdate="1981" ISBN="1-861003-11-0">

<title>The Autobiography of Benjamin Franklin</title>

<author>

<first-name>Benjamin</first-name>

<last-name>Franklin</last-name>

</author>

<price>8.99</price>

</book>

<book genre="novel" publicationdate="1967" ISBN="0-201-63361-2">

<title>The Confidence Man</title>

<author>

<first-name>Herman</first-name>

<last-name>Melville</last-name>

</author>

<price>11.99</price>

</book>

<book genre="philosophy" publicationdate="1991" ISBN="1-861001-57-6">

<title>The Gorgias</title>

<author>

<name>Plato</name>

</author>

<price>9.99</price>

</book>

</bookstore>

 

If I change one of the xml file elements from first-name to fname, the validator cataches the error.

However, I keep the opening tag in xml file as <book> but change the closing tag from </book> to </bk> The validator is never fired.

Instead it crashes with exception in while (xmlReader.Read()) ;

 

Can someone please tell me how to catch mismatch in closing and opening tags.