EntityRef<TEntity> Structure
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Provides for deferred loading and relationship maintenance for the singleton side of a one-to-many relationship in a LINQ to SQL application.
Namespace: System.Data.Linq
Assembly: System.Data.Linq (in System.Data.Linq.dll)
Syntax
'Declaration
Public Structure EntityRef(Of TEntity As Class)
public struct EntityRef<TEntity>
where TEntity : class
Type Parameters
- TEntity
The type of the target entity.
The EntityRef<TEntity> type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
.gif "Public method") .gif "Supported by Silverlight for Windows Phone") |
EntityRef<TEntity>(TEntity) | Initializes a new instance of the EntityRef<TEntity> class by specifying the target entity. |
|
EntityRef<TEntity>(EntityRef<TEntity>) | Initializes a new instance of the EntityRef<TEntity> class by referencing the target entity. |
|
EntityRef<TEntity>(IEnumerable<TEntity>) | Initializes a new instance of the EntityRef<TEntity> class by specifying the source. |
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Properties
| Name | Description | |
|---|---|---|
.gif "Public property") |
Entity | Gets or sets the target entity. |
|
HasLoadedOrAssignedValue | Gets a value that indicates whether the target has been loaded or assigned. |
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Methods
| Name | Description | |
|---|---|---|
|
Equals | Indicates whether this instance and a specified object are equal. (Inherited from ValueType.) |
.gif "Protected method") |
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.) |
|
GetHashCode | Returns the hash code for this instance. (Inherited from ValueType.) |
|
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 the fully qualified type name of this instance. (Inherited from ValueType.) |
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Remarks
This class is used in combination with EntitySet<TEntity>.
| Topic | Location |
|---|---|
| How to: Map Database Relationships (LINQ to SQL) | LINQ to SQL |
| Object States and Change-Tracking (LINQ to SQL) | LINQ to SQL |
| How to: Map Database Relationships (LINQ to SQL) | LINQ to SQL |
| Object States and Change-Tracking (LINQ to SQL) | LINQ to SQL |
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.