XmlSchemaAttribute Class
Represents the attribute element from the XML Schema as specified by the . Attributes provide additional information for other document elements. The attribute tag is nested between the tags of a document's element for the schema. The XML document displays attributes as named items in the opening tag of an element.
System.Xml.Schema::XmlSchemaObject
System.Xml.Schema::XmlSchemaAnnotated
System.Xml.Schema::XmlSchemaAttribute
Assembly: System.Xml (in System.Xml.dll)
The XmlSchemaAttribute type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() | Annotation | Gets or sets the annotation property. (Inherited from XmlSchemaAnnotated.) |
![]() ![]() | AttributeSchemaType | Gets an XmlSchemaSimpleType object representing the type of the attribute based on the SchemaType or SchemaTypeName of the attribute. |
![]() ![]() | AttributeType | Obsolete. Gets the common language runtime (CLR) object based on the SchemaType or SchemaTypeName of the attribute that holds the post-compilation value of the AttributeType property. |
![]() ![]() | DefaultValue | Gets or sets the default value for the attribute. |
![]() ![]() | FixedValue | Gets or sets the fixed value for the attribute. |
![]() ![]() | Form | Gets or sets the form for the attribute. |
![]() ![]() | Id | Gets or sets the string id. (Inherited from XmlSchemaAnnotated.) |
![]() ![]() | LineNumber | Gets or sets the line number in the file to which the schema element refers. (Inherited from XmlSchemaObject.) |
![]() ![]() | LinePosition | Gets or sets the line position in the file to which the schema element refers. (Inherited from XmlSchemaObject.) |
![]() ![]() | Name | Gets or sets the name of the attribute. |
![]() ![]() | Namespaces | Gets or sets the XmlSerializerNamespaces to use with this schema object. (Inherited from XmlSchemaObject.) |
![]() ![]() | Parent | Gets or sets the parent of this XmlSchemaObject. (Inherited from XmlSchemaObject.) |
![]() ![]() | QualifiedName | Gets the qualified name for the attribute. |
![]() ![]() | RefName | Gets or sets the name of an attribute declared in this schema (or another schema indicated by the specified namespace). |
![]() ![]() | SchemaType | Gets or sets the attribute type to a simple type. |
![]() ![]() | SchemaTypeName | Gets or sets the name of the simple type defined in this schema (or another schema indicated by the specified namespace). |
![]() ![]() | SourceUri | Gets or sets the source location for the file that loaded the schema. (Inherited from XmlSchemaObject.) |
![]() ![]() | UnhandledAttributes | Gets or sets the qualified attributes that do not belong to the current schema's target namespace. (Inherited from XmlSchemaAnnotated.) |
![]() ![]() | Use | Gets or sets information about how the attribute is used. |
| Name | Description | |
|---|---|---|
![]() ![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() ![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() ![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() ![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() ![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() ![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
Attribute declarations can be present as child elements of the schema element (having global scope) or within complex type definitions. For complex types, attribute declarations can be present as local declarations or references to attributes with global scope. Both global and local attribute declarations have the optional type attribute that refers to an existing simple type. If the optional type attribute is not used, the attribute declaration (global or local) must define a local simple type.
The following example creates the attribute element.
#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:attribute name="mybaseattribute"> XmlSchemaAttribute^ attributeBase = gcnew XmlSchemaAttribute(); schema->Items->Add(attributeBase); attributeBase->Name = "mybaseattribute"; // <xs:simpleType> XmlSchemaSimpleType^ simpleType = gcnew XmlSchemaSimpleType(); attributeBase->SchemaType = simpleType; // <xs:restriction base="integer"> XmlSchemaSimpleTypeRestriction^ restriction = gcnew XmlSchemaSimpleTypeRestriction(); simpleType->Content = restriction; restriction->BaseTypeName = gcnew XmlQualifiedName("integer", "http://www.w3.org/2001/XMLSchema"); // <xs:maxInclusive value="1000"/> XmlSchemaMaxInclusiveFacet^ maxInclusive = gcnew XmlSchemaMaxInclusiveFacet(); restriction->Facets->Add(maxInclusive); maxInclusive->Value = "1000"; // <xs:complexType name="myComplexType"> XmlSchemaComplexType^ complexType = gcnew XmlSchemaComplexType(); schema->Items->Add(complexType); complexType->Name = "myComplexType"; // <xs:attribute ref="mybaseattribute"/> XmlSchemaAttribute^ attributeBaseRef = gcnew XmlSchemaAttribute(); complexType->Attributes->Add(attributeBaseRef); attributeBaseRef->RefName = gcnew XmlQualifiedName("mybaseattribute"); 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; };
The following XML file is generated for the preceding code example.
<?xml version="1.0" encoding="IBM437"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:attribute name="mybaseattribute">
<xs:simpleType>
<xs:restriction base="xs:integer">
<xs:maxInclusive value="1000" />
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:complexType name="myComplexType">
<xs:attribute ref="mybaseattribute" />
</xs:complexType>
</xs:schema>
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
