Detailed introduction to code sharing using xsd to verify xml

Xsd

XMLStructure Definition(XML Schemas Definition)
XML Schemais a replacement forDTD.XML SchemaThe language is alsoXSD.
XML Schemadescribes the structure of theXMLdocument. You can validate aXMLdocument against a specifiedXML Schemato check thatXMLWhether the document meets its requirements.
Document designers can specify the allowed structure and content of anXMLdocument throughXML Schema, and can check accordingly Whether anXMLdocument is valid.XML Schemaitself is aXMLdocument, which conforms to theXMLsyntax structure.
It can be parsed with the generalXMLparser.
AXML Schemawill define: elements that appear in the document, attributes that appear in the document, sub-elements, sub-elements The number of elements, the order of child elements, whether the element is empty, the data type of elements and attributes, the default and fixed values of elements or attributes.

The suffix name of the XSDfile is.xsd.

In the following code example, the above schema is added to theXmlReaderSettingsobject'sXmlSchemaSetSchemasproperty.XmlReaderSettingsTheValidationTypeproperty of the object is set toSchema
, forced to pass the
XmlReaderobject'sCreateMethodValidationXMLDocument.AddValidationEventHandlerto theXmlReaderSettingsobject to handle anyWarning raised by errors found duringXMLdocument and schema validationorErrorevent.
Below is an example:

using System; using System.Xml; using System.Xml.Schema; using System.IO; using System.Xml.Serialization; using System.Text; public class XmlSchemaSetExample { static void Main() { XmlReaderSettings booksSettings = new XmlReaderSettings(); booksSettings.Schemas.Add("http://www.contoso.com/books", "contosoBooks.xsd"); booksSettings.ValidationType = ValidationType.Schema; booksSettings.ValidationEventHandler += new ValidationEventHandler(booksSettingsValidationEventHandler); MemoryStream ms = new MemoryStream();//定义一个数据流对象 XmlDocument doc = new XmlDocument(); doc.Load("contosoBooks.xml"); doc.Save(ms); ms.Position = 0; //修改指针的位置 XmlReader books = XmlReader.Create(ms,booksSettings); while (books.Read()) { } } static void booksSettingsValidationEventHandler(object sender, ValidationEventArgs e) { if (e.Severity == XmlSeverityType.Warning) { Console.Write("WARNING: "); Console.WriteLine(e.Message); Console.Read(); } else if (e.Severity == XmlSeverityType.Error) { Console.Write("ERROR: "); Console.WriteLine(e.Message); Console.Read(); } } }

contosoBooks.xml

##

     Benjamin Franklin  8.99     Herman Melville  11.99     Plato  9.99  

StreamReader,XmlSchema,XmlSchemaSet

Stream stream = new MemoryStream(); //When an object of a class cannot be initialized, you can consider using itsinheritancekind.
## FileStream fs = File.Open("117.xml", FileMode.OpenOrCreate, FileAccess.ReadWrite);

123.xml");##     TextReader tr2= new StringReader("asdfsadfsdf");

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