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建置 XML 結構描述

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更新： November 2007

System.Xml.Schema 命名空間中的類別會對應至全球資訊網協會 (W3C) XML 結構描述建議事項中定義的結構，並可用於建置記憶體中的 XML 結構描述。

建置 XML 結構描述

在下面的程式碼範例中，會使用 SOM API 建置記憶體中的客戶 XML 結構描述。

建立項目及屬性

程式碼範例會從下往上建置客戶結構描述，首先建立項目子系、屬性及其對應的型別，然後再建立最上層項目。

在下列程式碼範例中，會使用 SOM 的 XmlSchemaElement 及 XmlSchemaAttribute 類別，建立 FirstName 及 LastName 項目，以及客戶結構描述的 CustomerId 屬性。除了 XmlSchemaElement 及 XmlSchemaAttribute 類別的 Name 屬性 (其對應至 XML 結構描述中 <xs:element /> 及 <xs:attribute /> 項目的 name 屬性 (Attribute))，結構描述所允許的所有其他屬性 (defaultValue、fixedValue 及 form 等)，在 XmlSchemaElement 及 XmlSchemaAttribute 類別中都有對應的屬性 (Property)。

' Create the FirstName and LastName elements.
Dim firstNameElement As XmlSchemaElement = New XmlSchemaElement()
firstNameElement.Name = "FirstName"
Dim lastNameElement As XmlSchemaElement = New XmlSchemaElement()
lastNameElement.Name = "LastName"

' Create CustomerId attribute.
Dim idAttribute As XmlSchemaAttribute = New XmlSchemaAttribute()
idAttribute.Name = "CustomerId"
idAttribute.Use = XmlSchemaUse.Required

// Create the FirstName and LastName elements.
XmlSchemaElement firstNameElement = new XmlSchemaElement();
firstNameElement.Name = "FirstName";
XmlSchemaElement lastNameElement = new XmlSchemaElement();
lastNameElement.Name = "LastName";

// Create CustomerId attribute.
XmlSchemaAttribute idAttribute = new XmlSchemaAttribute();
idAttribute.Name = "CustomerId";
idAttribute.Use = XmlSchemaUse.Required;

        // Create the FirstName and LastName elements.
        XmlSchemaElement^ firstNameElement = gcnew XmlSchemaElement();
        firstNameElement->Name = "FirstName";
        XmlSchemaElement^ lastNameElement = gcnew XmlSchemaElement();
        lastNameElement->Name = "LastName";

        // Create CustomerId attribute.
        XmlSchemaAttribute^ idAttribute = gcnew XmlSchemaAttribute();
        idAttribute->Name = "CustomerId";
        idAttribute->Use = XmlSchemaUse::Required;

建立結構描述型別

項目及屬性的內容是由其型別來定義。若要建立其型別為其中一個內建結構描述型別的項目及屬性 (Attribute)，請使用 XmlQualifiedName 類別，以內建型別之對應的限定名稱設定 XmlSchemaElement 或 XmlSchemaAttribute 類別的 SchemaTypeName 屬性 (Property)。若要建立項目及屬性的使用者定義型別，請使用 XmlSchemaSimpleType 或 XmlSchemaComplexType 類別，建立新的簡單或複雜型別。

注意事項：

若要建立做為項目或屬性 (Attribute) 之匿名子系的未命名簡單或複雜型別 (僅簡單型別適用於屬性 (Attribute))，請將 XmlSchemaElement 或 XmlSchemaAttribute 類別的 SchemaType 屬性設為未命名的簡單或複雜型別，而不是 XmlSchemaElement 或 XmlSchemaAttribute 類別的 SchemaTypeName 屬性 (Property)。

XML 結構描述允許匿名及具名簡單型別，利用限制其他簡單型別 (內建的或使用者定義的) 衍生，或建構為其他簡單型別的清單或聯集。XmlSchemaSimpleTypeRestriction 類別可用於藉由限制內建 xs:string 型別，來建立簡單型別。您也可以使用 XmlSchemaSimpleTypeList 或 XmlSchemaSimpleTypeUnion 類別，建立清單或聯集型別。XmlSchemaSimpleType.Content 屬性可表示它是簡單型別限制、清單還是聯集。

在下列程式碼範例中，FirstName 項目的型別為內建型別 xs:string，LastName 項目的型別為限制內建型別 xs:string 的具名簡單型別 (MaxLength Facet 值為 20)，而 CustomerId 屬性的型別為內建型別 xs:positiveInteger。Customer 項目為匿名的複雜型別，其物件是 FirstName 及 LastName 項目的序列，而且其屬性包含 CustomerId 屬性。

注意事項：

您也可以將 XmlSchemaChoice 或 XmlSchemaAll 類別做為複雜型別的物件，以複寫 <xs:choice /> 或 <xs:all /> 語意。

 
' Create the simple type for the LastName element.
Dim lastNameType As XmlSchemaSimpleType = New XmlSchemaSimpleType()
lastNameType.Name = "LastNameType"
Dim lastNameRestriction As XmlSchemaSimpleTypeRestriction = _
    New XmlSchemaSimpleTypeRestriction()
lastNameRestriction.BaseTypeName = _
    New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema")
Dim maxLength As XmlSchemaMaxLengthFacet = New XmlSchemaMaxLengthFacet()
maxLength.Value = "20"
lastNameRestriction.Facets.Add(maxLength)
lastNameType.Content = lastNameRestriction

' Associate the elements and attributes with their types.
' Built-in type.
firstNameElement.SchemaTypeName = _
    New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema")
' User-defined type.
lastNameElement.SchemaTypeName = _
    New XmlQualifiedName("LastNameType", "http://www.tempuri.org")
' Built-in type.
idAttribute.SchemaTypeName = New XmlQualifiedName("positiveInteger", _
    "http://www.w3.org/2001/XMLSchema")

' Create the top-level Customer element.
Dim customerElement As XmlSchemaElement = New XmlSchemaElement()
customerElement.Name = "Customer"

' Create an anonymous complex type for the Customer element.
Dim customerType As XmlSchemaComplexType = New XmlSchemaComplexType()
Dim sequence As XmlSchemaSequence = New XmlSchemaSequence()
sequence.Items.Add(firstNameElement)
sequence.Items.Add(lastNameElement)
customerType.Particle = sequence

' Add the CustomerId attribute to the complex type.
customerType.Attributes.Add(idAttribute)

' Set the SchemaType of the Customer element to
' the anonymous complex type created above.
customerElement.SchemaType = customerType

// Create the simple type for the LastName element.
XmlSchemaSimpleType lastNameType = new XmlSchemaSimpleType();
lastNameType.Name = "LastNameType";
XmlSchemaSimpleTypeRestriction lastNameRestriction =
    new XmlSchemaSimpleTypeRestriction();
lastNameRestriction.BaseTypeName =
    new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");
XmlSchemaMaxLengthFacet maxLength = new XmlSchemaMaxLengthFacet();
maxLength.Value = "20";
lastNameRestriction.Facets.Add(maxLength);
lastNameType.Content = lastNameRestriction;

// Associate the elements and attributes with their types.
// Built-in type.
firstNameElement.SchemaTypeName =
    new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");
// User-defined type.
lastNameElement.SchemaTypeName =
    new XmlQualifiedName("LastNameType", "http://www.tempuri.org");
// Built-in type.
idAttribute.SchemaTypeName = new XmlQualifiedName("positiveInteger",
    "http://www.w3.org/2001/XMLSchema");

// Create the top-level Customer element.
XmlSchemaElement customerElement = new XmlSchemaElement();
customerElement.Name = "Customer";

// Create an anonymous complex type for the Customer element.
XmlSchemaComplexType customerType = new XmlSchemaComplexType();
XmlSchemaSequence sequence = new XmlSchemaSequence();
sequence.Items.Add(firstNameElement);
sequence.Items.Add(lastNameElement);
customerType.Particle = sequence;

// Add the CustomerId attribute to the complex type.
customerType.Attributes.Add(idAttribute);

// Set the SchemaType of the Customer element to
// the anonymous complex type created above.
customerElement.SchemaType = customerType;

// Create the simple type for the LastName element.
XmlSchemaSimpleType^ lastNameType = gcnew XmlSchemaSimpleType();
lastNameType->Name = "LastNameType";
XmlSchemaSimpleTypeRestriction^ lastNameRestriction =
    gcnew XmlSchemaSimpleTypeRestriction();
lastNameRestriction->BaseTypeName =
    gcnew XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");
XmlSchemaMaxLengthFacet^ maxLength = gcnew XmlSchemaMaxLengthFacet();
maxLength->Value = "20";
lastNameRestriction->Facets->Add(maxLength);
lastNameType->Content = lastNameRestriction;

// Associate the elements and attributes with their types.
// Built-in type.
firstNameElement->SchemaTypeName =
    gcnew XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");
// User-defined type.
lastNameElement->SchemaTypeName =
    gcnew XmlQualifiedName("LastNameType", "http://www.tempuri.org");
// Built-in type.
idAttribute->SchemaTypeName = gcnew XmlQualifiedName("positiveInteger",
    "http://www.w3.org/2001/XMLSchema");

// Create the top-level Customer element.
XmlSchemaElement^ customerElement = gcnew XmlSchemaElement();
customerElement->Name = "Customer";

// Create an anonymous complex type for the Customer element.
XmlSchemaComplexType^ customerType = gcnew XmlSchemaComplexType();
XmlSchemaSequence^ sequence = gcnew XmlSchemaSequence();
sequence->Items->Add(firstNameElement);
sequence->Items->Add(lastNameElement);
customerType->Particle = sequence;

// Add the CustomerId attribute to the complex type.
customerType->Attributes->Add(idAttribute);

// Set the SchemaType of the Customer element to
// the anonymous complex type created above.
customerElement->SchemaType = customerType;

建立及編譯結構描述

此時，已使用 SOM API 在記憶體中建立項目子系及屬性、其對應的型別，以及最上層 Customer 項目。在下列程式碼範例中，會使用 XmlSchema 類別建立結構描述項目，使用 XmlSchema.Items 屬性將最上層項目及型別加入其中，並使用 XmlSchemaSet 類別編譯完整的結構描述，然後寫入主控台。

' Create an empty schema.
Dim customerSchema As XmlSchema = New XmlSchema()
customerSchema.TargetNamespace = "http://www.tempuri.org"

' Add all top-level element and types to the schema
customerSchema.Items.Add(customerElement)
customerSchema.Items.Add(lastNameType)

' Create an XmlSchemaSet to compile the customer schema.
Dim schemaSet As XmlSchemaSet = New XmlSchemaSet()
AddHandler schemaSet.ValidationEventHandler, AddressOf ValidationCallback
schemaSet.Add(customerSchema)
schemaSet.Compile()

For Each schema As XmlSchema In schemaSet.Schemas()
    customerSchema = schema
Next

' Write the complete schema to the Console.
customerSchema.Write(Console.Out)

// Create an empty schema.
XmlSchema customerSchema = new XmlSchema();
customerSchema.TargetNamespace = "http://www.tempuri.org";

// Add all top-level element and types to the schema
customerSchema.Items.Add(customerElement);
customerSchema.Items.Add(lastNameType);

// Create an XmlSchemaSet to compile the customer schema.
XmlSchemaSet schemaSet = new XmlSchemaSet();
schemaSet.ValidationEventHandler += new ValidationEventHandler(ValidationCallback);
schemaSet.Add(customerSchema);
schemaSet.Compile();

foreach (XmlSchema schema in schemaSet.Schemas())
{
    customerSchema = schema;
}

// Write the complete schema to the Console.
customerSchema.Write(Console.Out);

// Create an empty schema.
XmlSchema^ customerSchema = gcnew XmlSchema();
customerSchema->TargetNamespace = "http://www.tempuri.org";

// Add all top-level element and types to the schema
customerSchema->Items->Add(customerElement);
customerSchema->Items->Add(lastNameType);

// Create an XmlSchemaSet to compile the customer schema.
XmlSchemaSet^ schemaSet = gcnew XmlSchemaSet();
schemaSet->ValidationEventHandler += gcnew ValidationEventHandler(ValidationCallback);
schemaSet->Add(customerSchema);
schemaSet->Compile();

for each (XmlSchema^ schema in schemaSet->Schemas())
{
    customerSchema = schema;
}

// Write the complete schema to the Console.
customerSchema->Write(Console::Out);

XmlSchemaSet.Compile 方法會根據 XML 結構描述的規則，驗證客戶結構描述，並使 Post-Schema-Compilation 屬性可用。

注意事項：

SOM API 中的所有 Post-Schema-Compilation 屬性都與 Post-Schema-Validation-Infoset 不同。

加入 XmlSchemaSet 的 ValidationEventHandler 是一種委派屬性，它會呼叫回呼方法 ValidationCallback，以處理結構描述驗證警告及錯誤。

以下是完整的程式碼範例，以及寫入主控台的客戶結構描述。

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

Class XmlSchemaCreateExample

    Shared Sub Main()

        ' Create the FirstName and LastName elements.
        Dim firstNameElement As XmlSchemaElement = New XmlSchemaElement()
        firstNameElement.Name = "FirstName"
        Dim lastNameElement As XmlSchemaElement = New XmlSchemaElement()
        lastNameElement.Name = "LastName"

        ' Create CustomerId attribute.
        Dim idAttribute As XmlSchemaAttribute = New XmlSchemaAttribute()
        idAttribute.Name = "CustomerId"
        idAttribute.Use = XmlSchemaUse.Required

        ' Create the simple type for the LastName element.
        Dim lastNameType As XmlSchemaSimpleType = New XmlSchemaSimpleType()
        lastNameType.Name = "LastNameType"
        Dim lastNameRestriction As XmlSchemaSimpleTypeRestriction = _
            New XmlSchemaSimpleTypeRestriction()
        lastNameRestriction.BaseTypeName = _
            New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema")
        Dim maxLength As XmlSchemaMaxLengthFacet = New XmlSchemaMaxLengthFacet()
        maxLength.Value = "20"
        lastNameRestriction.Facets.Add(maxLength)
        lastNameType.Content = lastNameRestriction

        ' Associate the elements and attributes with their types.
        ' Built-in type.
        firstNameElement.SchemaTypeName = _
            New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema")
        ' User-defined type.
        lastNameElement.SchemaTypeName = _
            New XmlQualifiedName("LastNameType", "http://www.tempuri.org")
        ' Built-in type.
        idAttribute.SchemaTypeName = New XmlQualifiedName("positiveInteger", _
            "http://www.w3.org/2001/XMLSchema")

        ' Create the top-level Customer element.
        Dim customerElement As XmlSchemaElement = New XmlSchemaElement()
        customerElement.Name = "Customer"

        ' Create an anonymous complex type for the Customer element.
        Dim customerType As XmlSchemaComplexType = New XmlSchemaComplexType()
        Dim sequence As XmlSchemaSequence = New XmlSchemaSequence()
        sequence.Items.Add(firstNameElement)
        sequence.Items.Add(lastNameElement)
        customerType.Particle = sequence

        ' Add the CustomerId attribute to the complex type.
        customerType.Attributes.Add(idAttribute)

        ' Set the SchemaType of the Customer element to
        ' the anonymous complex type created above.
        customerElement.SchemaType = customerType

        ' Create an empty schema.
        Dim customerSchema As XmlSchema = New XmlSchema()
        customerSchema.TargetNamespace = "http://www.tempuri.org"

        ' Add all top-level element and types to the schema
        customerSchema.Items.Add(customerElement)
        customerSchema.Items.Add(lastNameType)

        ' Create an XmlSchemaSet to compile the customer schema.
        Dim schemaSet As XmlSchemaSet = New XmlSchemaSet()
        AddHandler schemaSet.ValidationEventHandler, AddressOf ValidationCallback
        schemaSet.Add(customerSchema)
        schemaSet.Compile()

        For Each schema As XmlSchema In schemaSet.Schemas()
            customerSchema = schema
        Next

        ' Write the complete schema to the Console.
        customerSchema.Write(Console.Out)
    End Sub

    Shared Sub ValidationCallback(ByVal sender As Object, ByVal args As ValidationEventArgs)
        If args.Severity = XmlSeverityType.Warning Then
            Console.Write("WARNING: ")
        Else
            If args.Severity = XmlSeverityType.Error Then
                Console.Write("ERROR: ")
            End If
        End If
        Console.WriteLine(args.Message)
    End Sub
End Class

using System;
using System.Xml;
using System.Xml.Schema;

class XmlSchemaCreateExample
{
    static void Main(string[] args)
    {
        // Create the FirstName and LastName elements.
        XmlSchemaElement firstNameElement = new XmlSchemaElement();
        firstNameElement.Name = "FirstName";
        XmlSchemaElement lastNameElement = new XmlSchemaElement();
        lastNameElement.Name = "LastName";

        // Create CustomerId attribute.
        XmlSchemaAttribute idAttribute = new XmlSchemaAttribute();
        idAttribute.Name = "CustomerId";
        idAttribute.Use = XmlSchemaUse.Required;

        // Create the simple type for the LastName element.
        XmlSchemaSimpleType lastNameType = new XmlSchemaSimpleType();
        lastNameType.Name = "LastNameType";
        XmlSchemaSimpleTypeRestriction lastNameRestriction =
            new XmlSchemaSimpleTypeRestriction();
        lastNameRestriction.BaseTypeName =
            new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");
        XmlSchemaMaxLengthFacet maxLength = new XmlSchemaMaxLengthFacet();
        maxLength.Value = "20";
        lastNameRestriction.Facets.Add(maxLength);
        lastNameType.Content = lastNameRestriction;

        // Associate the elements and attributes with their types.
        // Built-in type.
        firstNameElement.SchemaTypeName =
            new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");
        // User-defined type.
        lastNameElement.SchemaTypeName =
            new XmlQualifiedName("LastNameType", "http://www.tempuri.org");
        // Built-in type.
        idAttribute.SchemaTypeName = new XmlQualifiedName("positiveInteger",
            "http://www.w3.org/2001/XMLSchema");

        // Create the top-level Customer element.
        XmlSchemaElement customerElement = new XmlSchemaElement();
        customerElement.Name = "Customer";

        // Create an anonymous complex type for the Customer element.
        XmlSchemaComplexType customerType = new XmlSchemaComplexType();
        XmlSchemaSequence sequence = new XmlSchemaSequence();
        sequence.Items.Add(firstNameElement);
        sequence.Items.Add(lastNameElement);
        customerType.Particle = sequence;

        // Add the CustomerId attribute to the complex type.
        customerType.Attributes.Add(idAttribute);

        // Set the SchemaType of the Customer element to
        // the anonymous complex type created above.
        customerElement.SchemaType = customerType;

        // Create an empty schema.
        XmlSchema customerSchema = new XmlSchema();
        customerSchema.TargetNamespace = "http://www.tempuri.org";

        // Add all top-level element and types to the schema
        customerSchema.Items.Add(customerElement);
        customerSchema.Items.Add(lastNameType);

        // Create an XmlSchemaSet to compile the customer schema.
        XmlSchemaSet schemaSet = new XmlSchemaSet();
        schemaSet.ValidationEventHandler += new ValidationEventHandler(ValidationCallback);
        schemaSet.Add(customerSchema);
        schemaSet.Compile();

        foreach (XmlSchema schema in schemaSet.Schemas())
        {
            customerSchema = schema;
        }

        // Write the complete schema to the Console.
        customerSchema.Write(Console.Out);
    }

    static void ValidationCallback(object sender, ValidationEventArgs args)
    {
        if (args.Severity == XmlSeverityType.Warning)
            Console.Write("WARNING: ");
        else if (args.Severity == XmlSeverityType.Error)
            Console.Write("ERROR: ");

        Console.WriteLine(args.Message);
    }
}

#using <System.Xml.dll>

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

ref class XmlSchemaCreateExample
{
public:

    static void Main()
    {
        // Create the FirstName and LastName elements.
        XmlSchemaElement^ firstNameElement = gcnew XmlSchemaElement();
        firstNameElement->Name = "FirstName";
        XmlSchemaElement^ lastNameElement = gcnew XmlSchemaElement();
        lastNameElement->Name = "LastName";

        // Create CustomerId attribute.
        XmlSchemaAttribute^ idAttribute = gcnew XmlSchemaAttribute();
        idAttribute->Name = "CustomerId";
        idAttribute->Use = XmlSchemaUse::Required;

        // Create the simple type for the LastName element.
        XmlSchemaSimpleType^ lastNameType = gcnew XmlSchemaSimpleType();
        lastNameType->Name = "LastNameType";
        XmlSchemaSimpleTypeRestriction^ lastNameRestriction =
            gcnew XmlSchemaSimpleTypeRestriction();
        lastNameRestriction->BaseTypeName =
            gcnew XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");
        XmlSchemaMaxLengthFacet^ maxLength = gcnew XmlSchemaMaxLengthFacet();
        maxLength->Value = "20";
        lastNameRestriction->Facets->Add(maxLength);
        lastNameType->Content = lastNameRestriction;

        // Associate the elements and attributes with their types.
        // Built-in type.
        firstNameElement->SchemaTypeName =
            gcnew XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");
        // User-defined type.
        lastNameElement->SchemaTypeName =
            gcnew XmlQualifiedName("LastNameType", "http://www.tempuri.org");
        // Built-in type.
        idAttribute->SchemaTypeName = gcnew XmlQualifiedName("positiveInteger",
            "http://www.w3.org/2001/XMLSchema");

        // Create the top-level Customer element.
        XmlSchemaElement^ customerElement = gcnew XmlSchemaElement();
        customerElement->Name = "Customer";

        // Create an anonymous complex type for the Customer element.
        XmlSchemaComplexType^ customerType = gcnew XmlSchemaComplexType();
        XmlSchemaSequence^ sequence = gcnew XmlSchemaSequence();
        sequence->Items->Add(firstNameElement);
        sequence->Items->Add(lastNameElement);
        customerType->Particle = sequence;

        // Add the CustomerId attribute to the complex type.
        customerType->Attributes->Add(idAttribute);

        // Set the SchemaType of the Customer element to
        // the anonymous complex type created above.
        customerElement->SchemaType = customerType;

        // Create an empty schema.
        XmlSchema^ customerSchema = gcnew XmlSchema();
        customerSchema->TargetNamespace = "http://www.tempuri.org";

        // Add all top-level element and types to the schema
        customerSchema->Items->Add(customerElement);
        customerSchema->Items->Add(lastNameType);

        // Create an XmlSchemaSet to compile the customer schema.
        XmlSchemaSet^ schemaSet = gcnew XmlSchemaSet();
        schemaSet->ValidationEventHandler += gcnew ValidationEventHandler(ValidationCallback);
        schemaSet->Add(customerSchema);
        schemaSet->Compile();

        for each (XmlSchema^ schema in schemaSet->Schemas())
        {
            customerSchema = schema;
        }

        // Write the complete schema to the Console.
        customerSchema->Write(Console::Out);
    }

    static void ValidationCallback(Object^ sender, ValidationEventArgs^ args)
    {
        if (args->Severity == XmlSeverityType::Warning)
            Console::Write("WARNING: ");
        else if (args->Severity == XmlSeverityType::Error)
            Console::Write("ERROR: ");

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

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

<?xml version="1.0" encoding="utf-8"?>
<xs:schema xmlns:tns="http://www.tempuri.org" targetNamespace="http://www.tempuri.org" xmlns:xs="http://www.w3.org/2001/XMLSchema">
   <xs:element name="Customer">
      <xs:complexType>
         <xs:sequence>
            <xs:element name="FirstName" type="xs:string" />
            <xs:element name="LastName" type="tns:LastNameType" />
         </xs:sequence>
         <xs:attribute name="CustomerId" type="xs:positiveInteger" use="required" />
      </xs:complexType>
   </xs:element>
   <xs:simpleType name="LastNameType">
      <xs:restriction base="xs:string">
         <xs:maxLength value="20" />
      </xs:restriction>
   </xs:simpleType>
</xs:schema>

請參閱

概念

XML 結構描述物件模型概觀

讀取及寫入 XML 結構描述

周遊 XML 結構描述

編輯 XML 結構描述

併入或匯入 XML 結構描述

用於結構描述編譯的 XmlSchemaSet

Post-Schema-Compilation Infoset