System.Data.Linq Namespace

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

The System.Data.Linq namespace contains classes that support interaction with a local database in Windows Phone applications.

For information about using a local database in your Windows Phone application, see Local database for Windows Phone 8.

Classes

Class Description
Binary Represents an immutable block of binary data.
ChangeConflictCollection Returns a collection of objects involved in concurrency conflicts.
ChangeConflictException Thrown when an update fails because database values have been updated since the client last read them.
ChangeSet Provides a container to hold changes.
CompiledQuery Provides for compilation and caching of queries for reuse.
DataContext The data context is an object representing the database, a proxy, containing Table objects that represent the tables in the database.
DataLoadOptions Provides for immediate loading and filtering of related data.
DBConvert Infrastructure. Used internally to convert one type to another.
DuplicateKeyException Thrown when an attempt is made to add an object to the identity cache by using a key that is already being used.
EntitySet<(Of <(TEntity>)>) Provides for deferred loading and relationship maintenance for the collection side of one-to-many and one-to-one relationships in a LINQ to SQL applications.
ForeignKeyReferenceAlreadyHasValueException Represents errors that occur when an attempt is made to change a foreign key when the entity is already loaded.
MemberChangeConflict Represents a situation in which an attempted update fails because member values have been updated since the client last read them.
ObjectChangeConflict Represents an update attempt with one or more optimistic concurrency conflicts.
Table<(Of <(TEntity>)>) Represents a table for a particular type in the underlying database.

Structures

Structure Description
EntityRef<(Of <(TEntity>)>) Provides for deferred loading and relationship maintenance for the singleton side of a one-to-many relationship in a LINQ to SQL application.
Link<(Of <(T>)>) Used to enable deferred loading of individual properties (similar to EntityRef<(Of <(TEntity>)>)).
ModifiedMemberInfo Holds values of members that have been modified in LINQ to SQL applications.

Interfaces

Interface Description
ITable Used for weakly typed query scenarios.
ITable<(Of <(TEntity>)>) Represents a table for a particular type in the underlying database.

Enumerations

Enumeration Description
ChangeAction Describes the type of change the entity will undergo when changes are submitted to the database.
ConflictMode Specifies when concurrency conflicts should be reported.
RefreshMode Defines how the Refresh method handles optimistic concurrency conflicts.