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XmlSchemaSequence Class

Requires the elements in the group to appear in the specified sequence within the containing element. Represents the World Wide Web Consortium (W3C) sequence (compositor) element.

For a list of all members of this type, see XmlSchemaSequence Members.

System.Object
   System.Xml.Schema.XmlSchemaObject
      System.Xml.Schema.XmlSchemaAnnotated
         System.Xml.Schema.XmlSchemaParticle
            System.Xml.Schema.XmlSchemaGroupBase
               System.Xml.Schema.XmlSchemaSequence

[Visual Basic]
Public Class XmlSchemaSequence
   Inherits XmlSchemaGroupBase
[C#]
public class XmlSchemaSequence : XmlSchemaGroupBase
[C++]
public __gc class XmlSchemaSequence : public XmlSchemaGroupBase
[JScript]
public class XmlSchemaSequence extends XmlSchemaGroupBase

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 shows the XmlSchemaSequence class.

[Visual Basic] 
Option Explicit
Option Strict

Imports System
Imports System.Xml
Imports System.Xml.Schema

Class XMLSchemaExamples
    
    Public Shared Sub Main()
        
        Dim schema As New XmlSchema()
        
        ' <xs:element name="thing1" type="xs:string"/>
        Dim elementThing1 As New XmlSchemaElement()
        schema.Items.Add(elementThing1)
        elementThing1.Name = "thing1"
        elementThing1.SchemaTypeName = New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema")
        
        ' <xs:element name="thing2" type="xs:string"/>
        Dim elementThing2 As New XmlSchemaElement()
        schema.Items.Add(elementThing2)
        elementThing2.Name = "thing2"
        elementThing2.SchemaTypeName = New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema")
        
        ' <xs:element name="thing3" type="xs:string"/>
        Dim elementThing3 As New XmlSchemaElement()
        schema.Items.Add(elementThing3)
        elementThing3.Name = "thing3"
        elementThing3.SchemaTypeName = New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema")
        
        ' <xs:attribute name="myAttribute" type="xs:decimal"/>
        Dim myAttribute As New XmlSchemaAttribute()
        schema.Items.Add(myAttribute)
        myAttribute.Name = "myAttribute"
        myAttribute.SchemaTypeName = New XmlQualifiedName("decimal", "http://www.w3.org/2001/XMLSchema")
        
        ' <xs:group name="myGroupOfThings">
        Dim myGroupOfThings As New XmlSchemaGroup()
        schema.Items.Add(myGroupOfThings)
        myGroupOfThings.Name = "myGroupOfThings"
        
        ' <xs:sequence>
        Dim sequence As New XmlSchemaSequence()
        myGroupOfThings.Particle = sequence
        
        ' <xs:element ref="thing1"/>
        Dim elementThing1Ref As New XmlSchemaElement()
        sequence.Items.Add(elementThing1Ref)
        elementThing1Ref.RefName = New XmlQualifiedName("thing1")
        
        ' <xs:element ref="thing2"/>
        Dim elementThing2Ref As New XmlSchemaElement()
        sequence.Items.Add(elementThing2Ref)
        elementThing2Ref.RefName = New XmlQualifiedName("thing2")
        
        ' <xs:element ref="thing3"/>
        Dim elementThing3Ref As New XmlSchemaElement()
        sequence.Items.Add(elementThing3Ref)
        elementThing3Ref.RefName = New XmlQualifiedName("thing3")
        
        ' <xs:complexType name="myComplexType">
        Dim myComplexType As New XmlSchemaComplexType()
        schema.Items.Add(myComplexType)
        myComplexType.Name = "myComplexType"
        
        ' <xs:group ref="myGroupOfThings"/>
        Dim myGroupOfThingsRef As New XmlSchemaGroupRef()
        myComplexType.Particle = myGroupOfThingsRef
        myGroupOfThingsRef.RefName = New XmlQualifiedName("myGroupOfThings")
        
        ' <xs:attribute ref="myAttribute"/>
        Dim myAttributeRef As New XmlSchemaAttribute()
        myComplexType.Attributes.Add(myAttributeRef)
        myAttributeRef.RefName = New XmlQualifiedName("myAttribute")
        
        schema.Compile(AddressOf ValidationCallbackOne)
        Dim nsmgr As New XmlNamespaceManager(New NameTable())
        nsmgr.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema")
        schema.Write(Console.Out, nsmgr)
    End Sub 'Main
    
    
    Public Shared Sub ValidationCallbackOne(sender As Object, 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() {
 
        XmlSchema schema = new XmlSchema();

        // <xs:element name="thing1" type="xs:string"/>
        XmlSchemaElement elementThing1 = new XmlSchemaElement();
        schema.Items.Add(elementThing1);
        elementThing1.Name = "thing1";
        elementThing1.SchemaTypeName = new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");
        
        // <xs:element name="thing2" type="xs:string"/>
        XmlSchemaElement elementThing2 = new XmlSchemaElement();
        schema.Items.Add(elementThing2);
        elementThing2.Name = "thing2";
        elementThing2.SchemaTypeName = new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");

        // <xs:element name="thing3" type="xs:string"/>
        XmlSchemaElement elementThing3 = new XmlSchemaElement();
        schema.Items.Add(elementThing3);
        elementThing3.Name = "thing3";
        elementThing3.SchemaTypeName = new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");
        
        // <xs:attribute name="myAttribute" type="xs:decimal"/>
        XmlSchemaAttribute myAttribute = new XmlSchemaAttribute();
        schema.Items.Add(myAttribute);
        myAttribute.Name = "myAttribute";
        myAttribute.SchemaTypeName = new XmlQualifiedName("decimal", "http://www.w3.org/2001/XMLSchema");
        
        // <xs:group name="myGroupOfThings">
        XmlSchemaGroup myGroupOfThings = new XmlSchemaGroup();
        schema.Items.Add(myGroupOfThings);
        myGroupOfThings.Name = "myGroupOfThings";
        
        // <xs:sequence>
        XmlSchemaSequence sequence = new XmlSchemaSequence();
        myGroupOfThings.Particle = sequence;

        // <xs:element ref="thing1"/>
        XmlSchemaElement elementThing1Ref = new XmlSchemaElement();
        sequence.Items.Add(elementThing1Ref);
        elementThing1Ref.RefName = new XmlQualifiedName("thing1");
        
        // <xs:element ref="thing2"/>
        XmlSchemaElement elementThing2Ref = new XmlSchemaElement();
        sequence.Items.Add(elementThing2Ref);
        elementThing2Ref.RefName = new XmlQualifiedName("thing2");

        // <xs:element ref="thing3"/>
        XmlSchemaElement elementThing3Ref = new XmlSchemaElement();
        sequence.Items.Add(elementThing3Ref);
        elementThing3Ref.RefName = new XmlQualifiedName("thing3");

        // <xs:complexType name="myComplexType">
        XmlSchemaComplexType myComplexType = new XmlSchemaComplexType();
        schema.Items.Add(myComplexType);
        myComplexType.Name = "myComplexType";
        
        // <xs:group ref="myGroupOfThings"/>
        XmlSchemaGroupRef myGroupOfThingsRef = new XmlSchemaGroupRef();
        myComplexType.Particle = myGroupOfThingsRef;
        myGroupOfThingsRef.RefName = new XmlQualifiedName("myGroupOfThings");

        // <xs:attribute ref="myAttribute"/>
        XmlSchemaAttribute myAttributeRef = new XmlSchemaAttribute();
        myComplexType.Attributes.Add(myAttributeRef);
        myAttributeRef.RefName = new XmlQualifiedName("myAttribute");

        schema.Compile(new ValidationEventHandler(ValidationCallbackOne));
     XmlNamespaceManager nsmgr = new XmlNamespaceManager(new NameTable());
        nsmgr.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema");
        schema.Write(Console.Out, nsmgr);
    }

    public static void ValidationCallbackOne(object sender, ValidationEventArgs args) {

        Console.WriteLine(args.Message);
    }
}

[C++] 
#using <mscorlib.dll>
#using <System.Xml.dll>
using namespace System;
using namespace System::Xml;  
using namespace System::Xml::Schema;

__gc class XMLSchemaExamples {
public:
    static void main() {
 
        XmlSchema* schema = new XmlSchema();

        // <xs:element name="thing1" type="xs:string"/>
        XmlSchemaElement* elementThing1 = new XmlSchemaElement();
        schema->Items->Add(elementThing1);
        elementThing1->Name = S"thing1";
        elementThing1->SchemaTypeName = new XmlQualifiedName(S"string", S"http://www.w3.org/2001/XMLSchema");
        
        // <xs:element name="thing2" type="xs:string"/>
        XmlSchemaElement* elementThing2 = new XmlSchemaElement();
        schema->Items->Add(elementThing2);
        elementThing2->Name = S"thing2";
        elementThing2->SchemaTypeName = new XmlQualifiedName(S"string", S"http://www.w3.org/2001/XMLSchema");

        // <xs:element name="thing3" type="xs:string"/>
        XmlSchemaElement* elementThing3 = new XmlSchemaElement();
        schema->Items->Add(elementThing3);
        elementThing3->Name = S"thing3";
        elementThing3->SchemaTypeName = new XmlQualifiedName(S"string", S"http://www.w3.org/2001/XMLSchema");
        
        // <xs:attribute name="myAttribute" type="xs:decimal"/>
        XmlSchemaAttribute* myAttribute = new XmlSchemaAttribute();
        schema->Items->Add(myAttribute);
        myAttribute->Name = S"myAttribute";
        myAttribute->SchemaTypeName = new XmlQualifiedName(S"decimal", S"http://www.w3.org/2001/XMLSchema");
        
        // <xs:group name="myGroupOfThings">
        XmlSchemaGroup* myGroupOfThings = new XmlSchemaGroup();
        schema->Items->Add(myGroupOfThings);
        myGroupOfThings->Name = S"myGroupOfThings";
        
        // <xs:sequence>
        XmlSchemaSequence* sequence = new XmlSchemaSequence();
        myGroupOfThings->Particle = sequence;

        // <xs:element ref="thing1"/>
        XmlSchemaElement* elementThing1Ref = new XmlSchemaElement();
        sequence->Items->Add(elementThing1Ref);
        elementThing1Ref->RefName = new XmlQualifiedName(S"thing1");
        
        // <xs:element ref="thing2"/>
        XmlSchemaElement* elementThing2Ref = new XmlSchemaElement();
        sequence->Items->Add(elementThing2Ref);
        elementThing2Ref->RefName = new XmlQualifiedName(S"thing2");

        // <xs:element ref="thing3"/>
        XmlSchemaElement* elementThing3Ref = new XmlSchemaElement();
        sequence->Items->Add(elementThing3Ref);
        elementThing3Ref->RefName = new XmlQualifiedName(S"thing3");

        // <xs:complexType name="myComplexType">
        XmlSchemaComplexType* myComplexType = new XmlSchemaComplexType();
        schema->Items->Add(myComplexType);
        myComplexType->Name = S"myComplexType";
        
        // <xs:group ref="myGroupOfThings"/>
        XmlSchemaGroupRef* myGroupOfThingsRef = new XmlSchemaGroupRef();
        myComplexType->Particle = myGroupOfThingsRef;
        myGroupOfThingsRef->RefName = new XmlQualifiedName(S"myGroupOfThings");

        // <xs:attribute ref="myAttribute"/>
        XmlSchemaAttribute* myAttributeRef = new XmlSchemaAttribute();
        myComplexType->Attributes->Add(myAttributeRef);
        myAttributeRef->RefName = new XmlQualifiedName(S"myAttribute");

        schema->Compile(new ValidationEventHandler(0, ValidationCallbackOne));
     XmlNamespaceManager* nsmgr = new XmlNamespaceManager(new NameTable());
        nsmgr->AddNamespace(S"xs", S"http://www.w3.org/2001/XMLSchema");
        schema->Write(Console::Out,nsmgr);
    }

    static void ValidationCallbackOne(Object* /*sender*/, ValidationEventArgs* args) {

        Console::WriteLine(args->Message);
    }
};

int main()
{
    XMLSchemaExamples::main();
}

[Visual Basic, C#, C++] The following XML file is used for the preceding code example.

<?xml version="1.0" encoding="IBM437"?>
<xs:schema  xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:element name="thing1" type="xs:string"/>
    <xs:element name="thing2" type="xs:string"/>
    <xs:element name="thing3" type="xs:string"/>

    <xs:attribute name="myAttribute" type="xs:decimal"/>

    <xs:group name="myGroupOfThings">
     <xs:sequence>
      <xs:element ref="thing1"/>
      <xs:element ref="thing2"/>
      <xs:element ref="thing3"/>
     </xs:sequence>
    </xs:group>

    <xs:complexType name="myComplexType">
        <xs:group ref="myGroupOfThings"/>
        <xs:attribute ref="myAttribute"/>
    </xs:complexType>
</xs:schema>

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter 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

Assembly: System.Xml (in System.Xml.dll)

See Also

XmlSchemaSequence Members | System.Xml.Schema Namespace

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