次の方法で共有


AssociationAttribute Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Designates a property to represent a database association, such as a foreign key relationship.

Inheritance Hierarchy

System.Object
  System.Attribute
    System.Data.Linq.Mapping.DataAttribute
      System.Data.Linq.Mapping.AssociationAttribute

Namespace:  System.Data.Linq.Mapping
Assembly:  System.Data.Linq (in System.Data.Linq.dll)

Syntax

'Declaration
<AttributeUsageAttribute(AttributeTargets.Property Or AttributeTargets.Field, AllowMultiple := False)> _
Public NotInheritable Class AssociationAttribute _
    Inherits DataAttribute
[AttributeUsageAttribute(AttributeTargets.Property|AttributeTargets.Field, AllowMultiple = false)]
public sealed class AssociationAttribute : DataAttribute

The AssociationAttribute type exposes the following members.

Constructors

  Name Description
Public methodSupported by Silverlight for Windows Phone AssociationAttribute Initializes a new instance of the AssociationAttribute class.

Top

Properties

  Name Description
Public propertySupported by Silverlight for Windows Phone DeleteOnNull When placed on a 1:1 association whose foreign key members are all non-nullable, deletes the object when the association is set to null.
Public propertySupported by Silverlight for Windows Phone DeleteRule Gets or sets delete behavior for an association.
Public propertySupported by Silverlight for Windows Phone IsForeignKey Gets or sets the member as the foreign key in an association representing a database relationship.
Public propertySupported by Silverlight for Windows Phone IsUnique Gets or sets the indication of a uniqueness constraint on the foreign key.
Public propertySupported by Silverlight for Windows Phone Name Gets or sets the name of a column. (Inherited from DataAttribute.)
Public propertySupported by Silverlight for Windows Phone OtherKey Gets or sets one or more members of the target entity class as key values on the other side of the association.
Public propertySupported by Silverlight for Windows Phone Storage Gets or sets a private storage field to hold the value from a column. (Inherited from DataAttribute.)
Public propertySupported by Silverlight for Windows Phone ThisKey Gets or sets members of this entity class to represent the key values on this side of the association.

Top

Methods

  Name Description
Public methodSupported by Silverlight for Windows Phone Equals Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Protected methodSupported by Silverlight for Windows Phone Finalize Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodSupported by Silverlight for Windows Phone GetHashCode Returns the hash code for this instance. (Inherited from Attribute.)
Public methodSupported by Silverlight for Windows Phone GetType Gets the Type of the current instance. (Inherited from Object.)
Public methodSupported by Silverlight for Windows Phone Match When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected methodSupported by Silverlight for Windows Phone MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public methodSupported by Silverlight for Windows Phone ToString Returns a string that represents the current object. (Inherited from Object.)

Top

Remarks

Use this attribute to represent an association in a database, such as the relationship between a foreign key and a primary key.

Version Information

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.