XmlSchemaObject Class

Definition

public ref class XmlSchemaObject abstract

public abstract class XmlSchemaObject

type XmlSchemaObject = class

Public MustInherit Class XmlSchemaObject

Inheritance

Object

XmlSchemaObject

Derived

System.Xml.Schema.XmlSchema

System.Xml.Schema.XmlSchemaAnnotated

System.Xml.Schema.XmlSchemaAnnotation

System.Xml.Schema.XmlSchemaAppInfo

System.Xml.Schema.XmlSchemaDocumentation

More…

Examples

The following example displays each schema object.

using System;
using System.Xml;
using System.Xml.Schema;
using System.IO;
using System.Reflection;

public class ValidXSD
{
 public static int Main()
 {

 string xsd = "example.xsd";

 FileStream fs;
 XmlSchema schema;
 try
 {
 fs = new FileStream(xsd, FileMode.Open);
 schema = XmlSchema.Read(fs, new ValidationEventHandler(ShowCompileError));

 XmlSchemaSet schemaSet = new XmlSchemaSet();
 schemaSet.ValidationEventHandler += new ValidationEventHandler(ShowCompileError);
 schemaSet.Add(schema);
 schemaSet.Compile();

 XmlSchema compiledSchema = null;

 foreach (XmlSchema schema1 in schemaSet.Schemas())
 {
 compiledSchema = schema1;
 }

 schema = compiledSchema;

 if (schema.IsCompiled)
 {
 DisplayObjects(schema);
 }
 return 0;
 }
 catch (XmlSchemaException e)
 {
 Console.WriteLine("LineNumber = {0}", e.LineNumber);
 Console.WriteLine("LinePosition = {0}", e.LinePosition);
 Console.WriteLine("Message = {0}", e.Message);
 Console.WriteLine("Source = {0}", e.Source);
 return -1;
 }
 }

 private static void DisplayObjects(object o)
 {
 DisplayObjects(o, "");
 }
 private static void DisplayObjects(object o, string indent)
 {
 Console.WriteLine("{0}{1}", indent, o);

 foreach (PropertyInfo property in o.GetType().GetProperties())
 {
 if (property.PropertyType.FullName == "System.Xml.Schema.XmlSchemaObjectCollection")
 {

 XmlSchemaObjectCollection childObjectCollection = (XmlSchemaObjectCollection)property.GetValue(o, null);

 foreach (XmlSchemaObject schemaObject in childObjectCollection)
 {
 DisplayObjects(schemaObject, indent + "\t");
 }
 }
 }
 }
 private static void ShowCompileError(object sender, ValidationEventArgs e)
 {
 Console.WriteLine("Validation Error: {0}", e.Message);
 }
}

Option Strict On
Option Explicit On

Imports System.Xml
Imports System.Xml.Schema
Imports System.IO
Imports System.Reflection

Public Class ValidXSD

 Public Shared Sub Main()

 Dim xsd As String = "example.xsd"

 Dim fs As FileStream
 Dim schema As XmlSchema
 Try
 fs = New FileStream(xsd, FileMode.Open)
 schema = XmlSchema.Read(fs, New ValidationEventHandler(AddressOf ShowCompileError))

 Dim schemaSet As New XmlSchemaSet()
 AddHandler schemaSet.ValidationEventHandler, AddressOf ShowCompileError

 schemaSet.Add(schema)
 schemaSet.Compile()

 Dim compiledSchema As XmlSchema = Nothing

 For Each schema1 As XmlSchema In schemaSet.Schemas()
 compiledSchema = schema1
 Next

 schema = compiledSchema

 If schema.IsCompiled Then
 DisplayObjects(schema)
 End If

 Catch e As XmlSchemaException
 Console.WriteLine("LineNumber = {0}", e.LineNumber)
 Console.WriteLine("LinePosition = {0}", e.LinePosition)
 Console.WriteLine("Message = {0}", e.Message)
 Console.WriteLine("Source = {0}", e.Source)

 End Try
 End Sub


 Private Overloads Shared Sub DisplayObjects(ByVal o As Object)
 DisplayObjects(o, "")
 End Sub

 Private Overloads Shared Sub DisplayObjects(ByVal o As Object, ByVal indent As String)
 Console.WriteLine("{0}{1}", indent, o)

 Dim property1 As PropertyInfo
 For Each property1 In o.GetType().GetProperties()
 If property1.PropertyType.FullName = "System.Xml.Schema.XmlSchemaObjectCollection" Then

 Dim childObjectCollection As XmlSchemaObjectCollection = CType(property1.GetValue(o, Nothing), XmlSchemaObjectCollection)

 Dim schemaObject As XmlSchemaObject
 For Each schemaObject In childObjectCollection
 DisplayObjects(schemaObject, indent + ControlChars.Tab)
 Next schemaObject
 End If
 Next property1
 End Sub

 Private Shared Sub ShowCompileError(ByVal sender As Object, ByVal e As ValidationEventArgs)
 Console.WriteLine("Validation Error: {0}", e.Message)
 End Sub
End Class

The example uses the example.xsd file as input.

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
 <xs:group name="testGroup">
 <xs:choice>
 <xs:any namespace="##any"/>
 </xs:choice>
 </xs:group>
 <xs:element name="myElement" >
 <xs:complexType>
 <xs:choice maxOccurs="unbounded">
 <xs:group ref="testGroup" />
 </xs:choice>
 </xs:complexType>
 </xs:element>
</xs:schema>