XmlSchemaDatatype Class (System.Xml.Schema)

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.NET Framework Class Library
XmlSchemaDatatype Class

The XmlSchemaDatatype class is an abstract class for mapping XML Schema definition language (XSD) types to Common Language Runtime (CLR) types.

Namespace:  System.Xml.Schema
Assembly:  System.Xml (in System.Xml.dll)
Syntax

Visual Basic (Declaration)
Public MustInherit Class XmlSchemaDatatype
Visual Basic (Usage)
Dim instance As XmlSchemaDatatype
C#
public abstract class XmlSchemaDatatype
Visual C++
public ref class XmlSchemaDatatype abstract
JScript
public abstract class XmlSchemaDatatype
Examples

The following example shows use of the XmlSchemaDatatype class.

Visual Basic
Imports System
Imports System.Xml
Imports System.Xml.Schema

 _

Class XMLSchemaExamples

    Public Shared Sub Main()
        Dim xtr As New XmlTextReader("example.xsd")
        Dim schema As XmlSchema = XmlSchema.Read(xtr, New ValidationEventHandler(AddressOf ValidationCallbackOne))

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

        schemaSet.Add(schema)
        schemaSet.Compile()

        Dim compiledSchema As XmlSchema = Nothing

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

        Dim schemaObject As XmlSchemaObject
        For Each schemaObject In compiledSchema.Items
            If schemaObject.GetType() Is GetType(XmlSchemaSimpleType) Then
                Dim simpleType As XmlSchemaSimpleType = CType(schemaObject, XmlSchemaSimpleType)
                Console.WriteLine("{0} {1}", simpleType.Name, simpleType.Datatype.ValueType)
            End If
            If schemaObject.GetType() Is GetType(XmlSchemaComplexType) Then
                Dim complexType As XmlSchemaComplexType = CType(schemaObject, XmlSchemaComplexType)
                Console.WriteLine("{0} {1}", complexType.Name, complexType.Datatype.ValueType)
            End If
        Next schemaObject
        xtr.Close()
    End Sub 'Main


    Public Shared Sub ValidationCallbackOne(ByVal sender As Object, ByVal args As ValidationEventArgs)
        Console.WriteLine(args.Message)
    End Sub 'ValidationCallbackOne
End Class 'XMLSchemaExamples


C#
using System;
using System.Xml;
using System.Xml.Schema;

class XMLSchemaExamples
{
    public static void Main()
    {
        XmlTextReader xtr = new XmlTextReader("example.xsd");
        XmlSchema schema = XmlSchema.Read(xtr, new ValidationEventHandler(ValidationCallbackOne));

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

        XmlSchema compiledSchema = null;

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



        foreach (XmlSchemaObject schemaObject in compiledSchema.Items)
        {
            if (schemaObject.GetType() == typeof(XmlSchemaSimpleType))
            {
                XmlSchemaSimpleType simpleType = (XmlSchemaSimpleType)schemaObject;
                Console.WriteLine("{0} {1}", simpleType.Name, simpleType.Datatype.ValueType);
            }
            if (schemaObject.GetType() == typeof(XmlSchemaComplexType))
            {
                XmlSchemaComplexType complexType = (XmlSchemaComplexType)schemaObject;
                Console.WriteLine("{0} {1}", complexType.Name, complexType.Datatype.ValueType);
            }
        }
        xtr.Close();
    }

    public static void ValidationCallbackOne(object sender, ValidationEventArgs args)
    {
        Console.WriteLine(args.Message);
    }
}


Visual C++
#using <mscorlib.dll>
#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
using namespace System::Xml::Schema;

class XmlSchemaExamples
{
public:

    static void Main()
    {
        XmlTextReader^ xtr = gcnew XmlTextReader("example.xsd");
		XmlSchema^ schema = XmlSchema::Read(xtr, gcnew ValidationEventHandler(ValidationCallbackOne));

        XmlSchemaSet^ schemaSet = gcnew XmlSchemaSet();
        schemaSet->ValidationEventHandler += gcnew ValidationEventHandler(ValidationCallbackOne);
        schemaSet->Add(schema);
        schemaSet->Compile();

        XmlSchema^ compiledSchema;

        for each (XmlSchema^ schema1 in schemaSet->Schemas())
        {
            compiledSchema = schema1;
        }

        for each (XmlSchemaObject^ schemaObject in compiledSchema->Items)
        {
			if (schemaObject->GetType() == XmlSchemaSimpleType::typeid)
            {
                XmlSchemaSimpleType^ simpleType = dynamic_cast<XmlSchemaSimpleType^>(schemaObject);
				Console::WriteLine("{0} {1}", simpleType->Name, simpleType->Datatype->ValueType);
            }
			if (schemaObject->GetType() == XmlSchemaComplexType::typeid)
            {
                XmlSchemaComplexType^ complexType = dynamic_cast<XmlSchemaComplexType^>(schemaObject);
				Console::WriteLine("{0} {1}", complexType->Name, complexType->Datatype->ValueType);
            }
        }
        xtr->Close();
    }

    static void ValidationCallbackOne(Object^ sender, ValidationEventArgs^ args)
    {
		Console::WriteLine(args->Message);
    }
};

int main()
{
	XmlSchemaExamples::Main();
    return 0;
};


The following XML file is used for the preceding code example.

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:simpleType name="LotteryNumber">
        <xs:restriction base="xs:int">
            <xs:minInclusive value="1"/>
            <xs:maxInclusive value="99"/>
        </xs:restriction>
    </xs:simpleType>
</xs:schema>


Inheritance Hierarchy

System.Object
  System.Xml.Schema.XmlSchemaDatatype
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.
Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
See Also

Reference