System.Xml.Schema.XmlSchemaIdentityConstraint Class

Summary

Class for the identity constraints: key, keyref, and unique elements.

C# Syntax:

public class XmlSchemaIdentityConstraint : XmlSchemaAnnotated

An association between a name and one of several varieties of identity constraint related to uniqueness and reference.

See XmlSchemaUnique for an example using this class.

System.Xml.Schema Namespace

System.Xml.Schema.XmlSchemaIdentityConstraint Member List:

Public Constructors

ctor #1

Default constructor. This constructor is called by derived class constructors to initialize state in this type.

Public Properties

Annotation (inherited from System.Xml.Schema.XmlSchemaAnnotated)	Read-write See base class member description: System.Xml.Schema.XmlSchemaAnnotated.Annotation Gets or sets the annotation property.
Fields	Read-only Gets the collection of fields that apply as children for the XML Path Language (XPath) expression selector.
Id (inherited from System.Xml.Schema.XmlSchemaAnnotated)	Read-write See base class member description: System.Xml.Schema.XmlSchemaAnnotated.Id Gets or sets the string id.
LineNumber (inherited from System.Xml.Schema.XmlSchemaObject)	Read-write See base class member description: System.Xml.Schema.XmlSchemaObject.LineNumber Gets or sets the line number in the file to which the schema element refers.
LinePosition (inherited from System.Xml.Schema.XmlSchemaObject)	Read-write See base class member description: System.Xml.Schema.XmlSchemaObject.LinePosition Gets or sets the line position in the file to which the schema element refers.
Name	Read-write Gets or sets the name of the identity constraint.
Namespaces (inherited from System.Xml.Schema.XmlSchemaObject)	Read-write See base class member description: System.Xml.Schema.XmlSchemaObject.Namespaces
QualifiedName	Read-only Gets the qualified name of the identity constraint which holds the post-compilation value of the QualifiedName property.
Selector	Read-write Gets or sets the XML Path Language (XPath) expression selector element.
SourceUri (inherited from System.Xml.Schema.XmlSchemaObject)	Read-write See base class member description: System.Xml.Schema.XmlSchemaObject.SourceUri Gets or sets the source location for the file that loaded the schema.
UnhandledAttributes (inherited from System.Xml.Schema.XmlSchemaAnnotated)	Read-write See base class member description: System.Xml.Schema.XmlSchemaAnnotated.UnhandledAttributes Gets or sets the qualified attributes that do not belong to the schema target namespace.

Public Methods

Equals (inherited from System.Object)	See base class member description: System.Object.Equals Derived from System.Object, the primary base class for all objects.
GetHashCode (inherited from System.Object)	See base class member description: System.Object.GetHashCode Derived from System.Object, the primary base class for all objects.
GetType (inherited from System.Object)	See base class member description: System.Object.GetType Derived from System.Object, the primary base class for all objects.
ToString (inherited from System.Object)	See base class member description: System.Object.ToString Derived from System.Object, the primary base class for all objects.

Protected Methods

Finalize (inherited from System.Object)	See base class member description: System.Object.Finalize Derived from System.Object, the primary base class for all objects.
MemberwiseClone (inherited from System.Object)	See base class member description: System.Object.MemberwiseClone Derived from System.Object, the primary base class for all objects.

Hierarchy:

• System.Object
• System.Xml.Schema.XmlSchemaObject
• System.Xml.Schema.XmlSchemaAnnotated
• System.Xml.Schema.XmlSchemaIdentityConstraint
  • System.Xml.Schema.XmlSchemaKey
  • System.Xml.Schema.XmlSchemaKeyref
  • System.Xml.Schema.XmlSchemaUnique

System.Xml.Schema.XmlSchemaIdentityConstraint Member Details

Summary:

Default constructor. This constructor is called by derived class constructors to initialize state in this type.

C# Syntax:

public XmlSchemaIdentityConstraint();

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Inherited
See base class member description: System.Xml.Schema.XmlSchemaAnnotated.Annotation

Summary

Gets or sets the annotation property.

C# Syntax:

public XmlSchemaAnnotation Annotation {get; set;}

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Summary

Gets the collection of fields that apply as children for the XML Path Language (XPath) expression selector.

C# Syntax:

public XmlSchemaObjectCollection Fields {get;}

The collection of fields that apply as children. Each field in the collection specifies the node set under the context element that the identity constraint applies to.

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Inherited
See base class member description: System.Xml.Schema.XmlSchemaAnnotated.Id

Summary

Gets or sets the string id.

C# Syntax:

public string Id {get; set;}

The id value must be of type ID and be unique within the document containing this element.

Optional.

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Inherited
See base class member description: System.Xml.Schema.XmlSchemaObject.LineNumber

Summary

Gets or sets the line number in the file to which the schema element refers.

C# Syntax:

public int LineNumber {get; set;}

LineNumber is used to store the line number when a schema is read from a file. This is reported through XmlSchemaException for error handling.

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Inherited
See base class member description: System.Xml.Schema.XmlSchemaObject.LinePosition

Summary

Gets or sets the line position in the file to which the schema element refers.

C# Syntax:

public int LinePosition {get; set;}

This is used to store the line position when a schema is read from a file. This is reported through XmlSchemaException for error handling.

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Summary

Gets or sets the name of the identity constraint.

C# Syntax:

public string Name {get; set;}

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Inherited
See base class member description: System.Xml.Schema.XmlSchemaObject.Namespaces

C# Syntax:

public XmlSerializerNamespaces Namespaces {get; set;}

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Summary

Gets the qualified name of the identity constraint which holds the post-compilation value of the QualifiedName property.

C# Syntax:

public XmlQualifiedName QualifiedName {get;}

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Summary

Gets or sets the XML Path Language (XPath) expression selector element.

C# Syntax:

public XmlSchemaXPath Selector {get; set;}

An XPath expression that is relative to the element being declared. This expression identifies the node set under the context element that the identity constraint applies to.

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Inherited
See base class member description: System.Xml.Schema.XmlSchemaObject.SourceUri

Summary

Gets or sets the source location for the file that loaded the schema.

C# Syntax:

public string SourceUri {get; set;}

Provides information for exception handling.

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Inherited
See base class member description: System.Xml.Schema.XmlSchemaAnnotated.UnhandledAttributes

Summary

Gets or sets the qualified attributes that do not belong to the schema target namespace.

C# Syntax:

public XmlAttribute[] UnhandledAttributes {get; set;}

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Inherited
See base class member description: System.Object.Equals

C# Syntax:

public virtual bool Equals(    object obj );

For more information on members inherited from System.Object click on the link above.

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Inherited
See base class member description: System.Object.Finalize

C# Syntax:

~XmlSchemaIdentityConstraint();

For more information on members inherited from System.Object click on the link above.

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Inherited
See base class member description: System.Object.GetHashCode

C# Syntax:

public virtual int GetHashCode();

For more information on members inherited from System.Object click on the link above.

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Inherited
See base class member description: System.Object.GetType

C# Syntax:

public Type GetType();

For more information on members inherited from System.Object click on the link above.

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Inherited
See base class member description: System.Object.MemberwiseClone

C# Syntax:

protected object MemberwiseClone();

For more information on members inherited from System.Object click on the link above.

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Inherited
See base class member description: System.Object.ToString

C# Syntax:

public virtual string ToString();

For more information on members inherited from System.Object click on the link above.

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