XmlSchemaObject Class
Creates an empty schema.
For a list of all members of this type, see XmlSchemaObject Members.
System.Object
System.Xml.Schema.XmlSchemaObject
Derived classes
[Visual Basic] MustInherit Public Class XmlSchemaObject [C#] public abstract class XmlSchemaObject [C++] public __gc __abstract class XmlSchemaObject [JScript] public abstract class XmlSchemaObject
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Example
[Visual Basic, C#, C++] The following example displays each schema object.
[Visual Basic] Option Strict Option Explicit Imports System Imports System.Xml Imports System.Xml.Schema Imports System.IO Imports System.Reflection Imports Microsoft.VisualBasic 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)) schema.Compile(AddressOf ShowCompileError) 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 'Main Overloads Private Shared Sub DisplayObjects(o As Object) DisplayObjects(o, "") End Sub 'DisplayObjects Overloads Private Shared Sub DisplayObjects(o As Object, 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 'DisplayObjects Private Shared Sub ShowCompileError(sender As Object, e As ValidationEventArgs) Console.WriteLine("Validation Error: {0}", e.Message) End Sub 'ShowCompileError End Class 'ValidXSD [C#] 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)); schema.Compile(new ValidationEventHandler(ShowCompileError)); 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); } } [C++] #using <mscorlib.dll> #using <System.Xml.dll> using namespace System; using namespace System::Xml; using namespace System::Xml::Schema; using namespace System::IO; using namespace System::Reflection; public __gc class ValidXSD { public: static int main() { String* xsd = S"example.xsd"; FileStream* fs; XmlSchema* schema; try { fs = new FileStream(xsd, FileMode::Open); schema = XmlSchema::Read(fs, new ValidationEventHandler(0, ShowCompileError)); schema->Compile(new ValidationEventHandler(0, ShowCompileError)); if (schema->IsCompiled) { DisplayObjects(schema); } return 0; } catch (XmlSchemaException* e) { Console::WriteLine(S"LineNumber = {0}", __box(e->LineNumber)); Console::WriteLine(S"LinePosition = {0}", __box(e->LinePosition)); Console::WriteLine(S"Message = {0}",e->Message); Console::WriteLine(S"Source = {0}",e->Source); return -1; } } private: static void DisplayObjects(Object* o) { DisplayObjects(o, S""); } static void DisplayObjects(Object* o, String* indent) { Console::WriteLine(S"{0}{1}",indent,o); System::Collections::IEnumerator* myEnum = o->GetType()->GetProperties()->GetEnumerator(); while (myEnum->MoveNext()) { PropertyInfo* property = __try_cast<PropertyInfo*>(myEnum->Current); if (property->PropertyType->FullName->Equals(S"System.Xml.Schema.XmlSchemaObjectCollection")) { XmlSchemaObjectCollection* childObjectCollection = dynamic_cast<XmlSchemaObjectCollection*> (property->GetValue(o, 0)); System::Collections::IEnumerator* myEnum1 = childObjectCollection->GetEnumerator(); while (myEnum1->MoveNext()) { XmlSchemaObject* schemaObject = __try_cast<XmlSchemaObject*>(myEnum1->Current); DisplayObjects(schemaObject, String::Concat( indent, S"\t" )); } } } } static void ShowCompileError(Object* /*sender*/, ValidationEventArgs* e) { Console::WriteLine(S"Validation Error: {0}",e->Message); } }; int main() { ValidXSD::main(); }
[Visual Basic, C#, C++] 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>
[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button
in the upper-left corner of the page.
Requirements
Namespace: System.Xml.Schema
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework
Assembly: System.Xml (in System.Xml.dll)