XmlSchemaAttributeGroup Class
Represents the attributeGroup element from the XML Schema as specified by the World Wide Web Consortium (W3C). AttributesGroups provides a mechanism to group a set of attribute declarations so that they can be incorporated as a group into complex type definitions.
Assembly: System.Xml (in System.Xml.dll)
System.Xml.Schema.XmlSchemaObject
System.Xml.Schema.XmlSchemaAnnotated
System.Xml.Schema.XmlSchemaAttributeGroup
| Name | Description | |
|---|---|---|
![]() | XmlSchemaAttributeGroup() | Initializes a new instance of the XmlSchemaAttributeGroup class. |
| Name | Description | |
|---|---|---|
![]() | Annotation | Gets or sets the annotation property.(Inherited from XmlSchemaAnnotated.) |
![]() | AnyAttribute | Gets or sets the XmlSchemaAnyAttribute component of the attribute group. |
![]() | Attributes | Gets the collection of attributes for the attribute group. Contains XmlSchemaAttribute and XmlSchemaAttributeGroupRef elements. |
![]() | 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 group. |
![]() | 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 of the attribute group. |
![]() | RedefinedAttributeGroup | Gets the redefined attribute group property from the XML Schema. |
![]() | 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.) |
| 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 the default hash function. (Inherited from Object.) |
![]() | GetType() | |
![]() | MemberwiseClone() | |
![]() | ToString() | Returns a string that represents the current object.(Inherited from Object.) |
An attribute group can be defined only as a child of the schema element. In this case, the name attribute must be present and contain the attribute, attributeGroup, or anyAttribute elements that make up the attribute group. When a complexType or an attributeGroup element includes an attribute group, the ref attribute must be present and the name attribute is not allowed.
The following example creates the attributeGroup element.
using System; using System.Xml; using System.Xml.Schema; class XMLSchemaExamples { public static void Main() { XmlSchema schema = new XmlSchema(); // <xs:attributeGroup name="myAttributeGroup"> XmlSchemaAttributeGroup myAttributeGroup = new XmlSchemaAttributeGroup(); schema.Items.Add(myAttributeGroup); myAttributeGroup.Name = "myAttributeGroup"; // <xs:attribute name="someattribute1" type="xs:integer"/> XmlSchemaAttribute someattribute1 = new XmlSchemaAttribute(); myAttributeGroup.Attributes.Add(someattribute1); someattribute1.Name = "someattribute1"; someattribute1.SchemaTypeName = new XmlQualifiedName("integer", "http://www.w3.org/2001/XMLSchema"); // <xs:attribute name="someattribute2" type="xs:string"/> XmlSchemaAttribute someattribute2 = new XmlSchemaAttribute(); myAttributeGroup.Attributes.Add(someattribute2); someattribute2.Name = "someattribute2"; someattribute2.SchemaTypeName = new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema"); // <xs:complexType name="myElementType"> XmlSchemaComplexType myElementType = new XmlSchemaComplexType(); schema.Items.Add(myElementType); myElementType.Name = "myElementType"; // <xs:attributeGroup ref="myAttributeGroup"/> XmlSchemaAttributeGroupRef myAttributeGroupRef = new XmlSchemaAttributeGroupRef(); myElementType.Attributes.Add(myAttributeGroupRef); myAttributeGroupRef.RefName = new XmlQualifiedName("myAttributeGroup"); // <xs:attributeGroup name="myAttributeGroupA"> XmlSchemaAttributeGroup myAttributeGroupA = new XmlSchemaAttributeGroup(); schema.Items.Add(myAttributeGroupA); myAttributeGroupA.Name = "myAttributeGroupA"; // <xs:attribute name="someattribute10" type="xs:integer"/> XmlSchemaAttribute someattribute10 = new XmlSchemaAttribute(); myAttributeGroupA.Attributes.Add(someattribute10); someattribute10.Name = "someattribute10"; someattribute10.SchemaTypeName = new XmlQualifiedName("integer", "http://www.w3.org/2001/XMLSchema"); // <xs:attribute name="someattribute11" type="xs:string"/> XmlSchemaAttribute someattribute11 = new XmlSchemaAttribute(); myAttributeGroupA.Attributes.Add(someattribute11); someattribute11.Name = "someattribute11"; someattribute11.SchemaTypeName = new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema"); // <xs:attributeGroup name="myAttributeGroupB"> XmlSchemaAttributeGroup myAttributeGroupB = new XmlSchemaAttributeGroup(); schema.Items.Add(myAttributeGroupB); myAttributeGroupB.Name = "myAttributeGroupB"; // <xs:attribute name="someattribute20" type="xs:date"/> XmlSchemaAttribute someattribute20 = new XmlSchemaAttribute(); myAttributeGroupB.Attributes.Add(someattribute20); someattribute20.Name = "someattribute20"; someattribute20.SchemaTypeName = new XmlQualifiedName("date", "http://www.w3.org/2001/XMLSchema"); // <xs:attributeGroup ref="myAttributeGroupA"/> XmlSchemaAttributeGroupRef myAttributeGroupRefA = new XmlSchemaAttributeGroupRef(); myAttributeGroupB.Attributes.Add(myAttributeGroupRefA); myAttributeGroupRefA.RefName = new XmlQualifiedName("myAttributeGroupA"); 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); } }
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:attributeGroup name="myAttributeGroup"> <xs:attribute name="someattribute1" type="xs:integer"/> <xs:attribute name="someattribute2" type="xs:string"/> </xs:attributeGroup> <xs:complexType name="myElementType"> <xs:attributeGroup ref="myAttributeGroup"/> </xs:complexType> <xs:attributeGroup name="myAttributeGroupA"> <xs:attribute name="someattribute10" type="xs:integer"/> <xs:attribute name="someattribute11" type="xs:string"/> </xs:attributeGroup> <xs:attributeGroup name="myAttributeGroupB"> <xs:attribute name="someattribute20" type="xs:date"/> <xs:attributeGroup ref="myAttributeGroupA"/> </xs:attributeGroup> </xs:schema>
Available since 1.1
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.


