Csharp/C Sharp/XML LINQ/Schema Validating
Содержание
Creating an XSD Schema by Inferring Itfrom an XML Document
<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.Schema; using System.Xml.Linq; public class MainClass {
public static void Main() { XDocument xDocument = new XDocument( new XElement("Books", new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "A"), new XElement("LastName", "B")), new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "C"), new XElement("LastName", "D")))); Console.WriteLine(xDocument); xDocument.Save("bookparticipants.xml"); XmlSchemaInference infer = new XmlSchemaInference(); XmlSchemaSet schemaSet = infer.InferSchema(new XmlTextReader("bookparticipants.xml")); XmlWriter w = XmlWriter.Create("bookparticipants.xsd"); foreach (XmlSchema schema in schemaSet.Schemas()) { schema.Write(w); } w.Close(); XDocument newDocument = XDocument.Load("bookparticipants.xsd"); Console.WriteLine(newDocument); }
}
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Successfully Validating an XML Element
<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.Schema; using System.Xml.Linq; using System.IO; public class MainClass {
public static void Main() { string schema = @"<?xml version="1.0" encoding="utf-8"?> <xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:element name="Books"> <xs:complexType> <xs:sequence> <xs:element maxOccurs="unbounded" name="Book"> <xs:complexType> <xs:sequence> <xs:element name="FirstName" type="xs:string" /> <xs:element minOccurs="0" name="MiddleInitial" type="xs:string" /> <xs:element name="LastName" type="xs:string" /> </xs:sequence> <xs:attribute name="type" type="xs:string" use="required" /> </xs:complexType> </xs:element> </xs:sequence> </xs:complexType> </xs:element> </xs:schema>"; XmlSchemaSet schemaSet = new XmlSchemaSet(); schemaSet.Add("", XmlReader.Create(new StringReader(schema))); }
}
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Validating an XML Document
<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.Schema; using System.Xml.Linq; public class MainClass {
public static void Main() { XDocument xDocument = new XDocument( new XElement("Books", new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "A"), new XElement("MiddleName", "Carson"), new XElement("LastName", "B")), new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "C"), new XElement("LastName", "D")))); Console.WriteLine(xDocument); XmlSchemaSet schemaSet = new XmlSchemaSet(); schemaSet.Add(null, "bookparticipants.xsd"); xDocument.Validate(schemaSet, (o, vea) => { Console.WriteLine(o.GetType().Name); Console.WriteLine(vea.Message); },true); foreach (XElement element in xDocument.Descendants()) { Console.WriteLine("Element {0} is {1}", element.Name, element.GetSchemaInfo().Validity); XmlSchemaElement se = element.GetSchemaInfo().SchemaElement; if (se != null) { Console.WriteLine( "Schema element {0} must have MinOccurs = {1} and MaxOccurs = {2}{3}", se.Name, se.MinOccurs, se.MaxOccurs, System.Environment.NewLine); } else { Console.WriteLine(); } } }
}
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Validating an XML Document with a Lambda Expression
<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.Schema; using System.Xml.Linq; public class MainClass {
public static void Main() { XDocument xDocument = new XDocument( new XElement("Books", new XElement("Book", new XAttribute("type", "Author"), new XAttribute("language", "English"), new XElement("FirstName", "A"), new XElement("LastName", "B")), new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "C"), new XElement("LastName", "D")))); Console.WriteLine(xDocument); XmlSchemaSet schemaSet = new XmlSchemaSet(); schemaSet.Add(null, "bookparticipants.xsd"); try { xDocument.Validate(schemaSet, (o, vea) => { Console.WriteLine(o.GetType().Name); Console.WriteLine(vea.Message); throw (new Exception(vea.Message)); }); } catch (Exception ex) { Console.WriteLine("Exception occurred: {0}", ex.Message); } }
}
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Validating an XML Document with Default Validation Event Handling
<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.Schema; using System.Xml.Linq; public class MainClass {
public static void Main() { XDocument xDocument = new XDocument( new XElement("Books", new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "A"), new XElement("MiddleInitial", "C"), new XElement("LastName", "B")), new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "C"), new XElement("LastName", "D")))); Console.WriteLine(xDocument); XmlSchemaSet schemaSet = new XmlSchemaSet(); schemaSet.Add(null, "bookparticipants.xsd"); try { xDocument.Validate(schemaSet, null); } catch (XmlSchemaValidationException ex) { Console.WriteLine("Exception occurred: {0}", ex.Message); } }
}
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