XmlSchemaSequence Classe

Riferimento

Definizione

Spazio dei nomi:: System.Xml.Schema

Assembly:: System.Xml.ReaderWriter.dll

Assembly:: System.Xml.dll

Assembly:: netstandard.dll

Importante

Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.

Rappresenta l'elemento sequence (compositor) di XML Schema come specificato dal World Wide Web Consortium (W3C). L'elemento sequence richiede che gli elementi del gruppo appaiano nella sequenza specificata all'interno dell'elemento contenitore.

public ref class XmlSchemaSequence : System::Xml::Schema::XmlSchemaGroupBase

public class XmlSchemaSequence : System.Xml.Schema.XmlSchemaGroupBase

type XmlSchemaSequence = class
    inherit XmlSchemaGroupBase

Public Class XmlSchemaSequence
Inherits XmlSchemaGroupBase

Ereditarietà: Object

XmlSchemaObject

XmlSchemaAnnotated

XmlSchemaParticle

XmlSchemaGroupBase
XmlSchemaSequence

Esempio

L'esempio seguente illustra la classe XmlSchemaSequence.

#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()
    {
        XmlSchema^ schema = gcnew XmlSchema();

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

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

        // <xs:element name="thing3" type="xs:string"/>
        XmlSchemaElement^ elementThing3 = gcnew XmlSchemaElement();
        schema->Items->Add(elementThing3);
        elementThing3->Name = "thing3";
        elementThing3->SchemaTypeName = gcnew XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");

        // <xs:attribute name="myAttribute" type="xs:decimal"/>
        XmlSchemaAttribute^ myAttribute = gcnew XmlSchemaAttribute();
        schema->Items->Add(myAttribute);
        myAttribute->Name = "myAttribute";
        myAttribute->SchemaTypeName = gcnew XmlQualifiedName("decimal", "http://www.w3.org/2001/XMLSchema");

        // <xs:group name="myGroupOfThings">
        XmlSchemaGroup^ myGroupOfThings = gcnew XmlSchemaGroup();
        schema->Items->Add(myGroupOfThings);
        myGroupOfThings->Name = "myGroupOfThings";

        // <xs:sequence>
        XmlSchemaSequence^ sequence = gcnew XmlSchemaSequence();
        myGroupOfThings->Particle = sequence;

        // <xs:element ref="thing1"/>
        XmlSchemaElement^ elementThing1Ref = gcnew XmlSchemaElement();
        sequence->Items->Add(elementThing1Ref);
        elementThing1Ref->RefName = gcnew XmlQualifiedName("thing1");

        // <xs:element ref="thing2"/>
        XmlSchemaElement^ elementThing2Ref = gcnew XmlSchemaElement();
        sequence->Items->Add(elementThing2Ref);
        elementThing2Ref->RefName = gcnew XmlQualifiedName("thing2");

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

        // <xs:complexType name="myComplexType">
        XmlSchemaComplexType^ myComplexType = gcnew XmlSchemaComplexType();
        schema->Items->Add(myComplexType);
        myComplexType->Name = "myComplexType";

        // <xs:group ref="myGroupOfThings"/>
        XmlSchemaGroupRef^ myGroupOfThingsRef = gcnew XmlSchemaGroupRef();
        myComplexType->Particle = myGroupOfThingsRef;
        myGroupOfThingsRef->RefName = gcnew XmlQualifiedName("myGroupOfThings");

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

        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;
        }

        XmlNamespaceManager^ nsmgr = gcnew XmlNamespaceManager(gcnew NameTable());
        nsmgr->AddNamespace("xs", "http://www.w3.org/2001/XMLSchema");
        compiledSchema->Write(Console::Out, nsmgr);
    }

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

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

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");

        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;
        }

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

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

        Console.WriteLine(args.Message);
    }
}

Option Explicit On
Option Strict On

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")

        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 nsmgr As New XmlNamespaceManager(New NameTable())
        nsmgr.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema")
        compiledSchema.Write(Console.Out, nsmgr)
    End Sub


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

Il file XML seguente viene usato per l'esempio di codice precedente.


<?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>

Costruttori

XmlSchemaSequence()

Inizializza una nuova istanza della classe XmlSchemaSequence.

Proprietà

Annotation	Ottiene o imposta la proprietà `annotation`. (Ereditato da XmlSchemaAnnotated)
Id	Ottiene o imposta l'ID di stringa. (Ereditato da XmlSchemaAnnotated)
Items	Elementi contenuti nel filtro Compositor. Insieme di XmlSchemaElement, XmlSchemaGroupRef, XmlSchemaChoice, XmlSchemaSequence o XmlSchemaAny.
LineNumber	Ottiene o imposta il numero di riga nel file a cui l'elemento `schema` fa riferimento. (Ereditato da XmlSchemaObject)
LinePosition	Ottiene o imposta la posizione di riga nel file a cui l'elemento `schema` fa riferimento. (Ereditato da XmlSchemaObject)
MaxOccurs	Ottiene o imposta il numero massimo delle occorrenze possibili di una particella. (Ereditato da XmlSchemaParticle)
MaxOccursString	Ottiene o imposta il numero come valore stringa. Numero massimo delle occorrenze possibili della particella. (Ereditato da XmlSchemaParticle)
MinOccurs	Ottiene o imposta il numero minimo delle occorrenze possibili della particella. (Ereditato da XmlSchemaParticle)
MinOccursString	Ottiene o imposta il numero come valore stringa. Numero minimo delle occorrenze possibili della particella. (Ereditato da XmlSchemaParticle)
Namespaces	Ottiene o imposta l'oggetto XmlSerializerNamespaces da utilizzare con questo oggetto schema. (Ereditato da XmlSchemaObject)
Parent	Ottiene o imposta la classe padre della classe XmlSchemaObject. (Ereditato da XmlSchemaObject)
SourceUri	Ottiene o imposta la posizione di origine per il file che ha caricato lo schema. (Ereditato da XmlSchemaObject)
UnhandledAttributes	Ottiene o imposta gli attributi qualificati che non appartengono allo spazio dei nomi di destinazione dello schema corrente. (Ereditato da XmlSchemaAnnotated)

Metodi

Equals(Object)	Determina se l'oggetto specificato è uguale all'oggetto corrente. (Ereditato da Object)
GetHashCode()	Funge da funzione hash predefinita. (Ereditato da Object)
GetType()	Ottiene l'oggetto Type dell'istanza corrente. (Ereditato da Object)
MemberwiseClone()	Crea una copia superficiale dell'oggetto Object corrente. (Ereditato da Object)
ToString()	Restituisce una stringa che rappresenta l'oggetto corrente. (Ereditato da Object)

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