XmlSchemaObject 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 la classe radice per la gerarchia del modello a oggetti dello schema XML e funge da classe base per le classi come XmlSchema.

public ref class XmlSchemaObject abstract

public abstract class XmlSchemaObject

type XmlSchemaObject = class

Public MustInherit Class XmlSchemaObject

Ereditarietà: Object
XmlSchemaObject

Derivato: System.Xml.Schema.XmlSchema

System.Xml.Schema.XmlSchemaAnnotated

System.Xml.Schema.XmlSchemaAnnotation

System.Xml.Schema.XmlSchemaAppInfo

System.Xml.Schema.XmlSchemaDocumentation

Altro…

Esempio

Nell'esempio seguente viene visualizzato ogni oggetto schema.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Reflection;
using namespace System::Xml;
using namespace System::Xml::Schema;

ref class ValidXSD
{
private:
    static void DisplayObjects(Object^ o)
    {
        DisplayObjects(o, "");
    }

    static void DisplayObjects(Object^ o, String^ indent)
    {
        Console::WriteLine("{0}{1}", indent, o);

        for each (PropertyInfo^ property1 in o->GetType()->GetProperties())
        {
            if (property1->PropertyType->FullName == "System.Xml.Schema.XmlSchemaObjectCollection")
            {
                XmlSchemaObjectCollection^ childObjectCollection = dynamic_cast<XmlSchemaObjectCollection^>(property1->GetValue(o, nullptr));

                for each (XmlSchemaObject^ schemaObject in childObjectCollection)
                {
                    DisplayObjects(schemaObject, indent + "\t");
                }
            }
        }
    }

    static void ShowCompileError(Object^ sender, ValidationEventArgs^ e)
    {
        Console::WriteLine("Validation Error: {0}", e->Message);
    }

public:
    static int Main()
    {
        String^ xsd = "example.xsd";

        FileStream^ fs;
        XmlSchema^ schema;
        try
        {
            fs = gcnew FileStream(xsd, FileMode::Open);
            schema = XmlSchema::Read(fs, gcnew ValidationEventHandler(ShowCompileError));

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

            XmlSchema^ compiledSchema = nullptr;

            for each (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;
        }
    }
};

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

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

Nell'esempio viene utilizzato il file example.xsd come 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>

Costruttori

XmlSchemaObject()

Inizializza una nuova istanza della classe XmlSchemaObject.

Proprietà

LineNumber	Ottiene o imposta il numero di riga nel file a cui l'elemento `schema` fa riferimento.
LinePosition	Ottiene o imposta la posizione di riga nel file a cui l'elemento `schema` fa riferimento.
Namespaces	Ottiene o imposta l'oggetto XmlSerializerNamespaces da utilizzare con questo oggetto schema.
Parent	Ottiene o imposta la classe padre della classe XmlSchemaObject.
SourceUri	Ottiene o imposta la posizione di origine per il file che ha caricato lo schema.

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)

Si applica a