War diese Seite hilfreich?
Ihr Feedback ist uns wichtig. Teilen Sie uns Ihre Meinung mit.
Weiteres Feedback?
1500 verbleibende Zeichen
MSDN Library
EN
Dieser Inhalt ist in Ihrer Sprache leider nicht verfügbar. Im Folgenden finden Sie die englische Version.

ITableEntity Interface

 

Updated: May 15, 2014

An interface required for table entity types. The ITableEntity interface declares getter and setter methods for the mandatory entity properties, and ReadEntity and WriteEntity methods for serialization and de-serialization of all entity properties using a property dictionary. Create classes implementing ITableEntity to customize property storage, retrieval, serialization and de-serialization, and to provide additional custom logic for a table entity.

Namespace:   Microsoft.WindowsAzure.Storage.Table
Assembly:  Microsoft.WindowsAzure.Storage (in Microsoft.WindowsAzure.Storage.dll)

public interface ITableEntity

NameDescription
System_CAPS_pubpropertyETag

Gets or sets the entity's current ETag. Set this value to '*' in order to blindly overwrite an entity as part of an update operation.

System_CAPS_pubpropertyPartitionKey

Gets or sets the entity's partition key.

System_CAPS_pubpropertyRowKey

Gets or sets the entity's row key.

System_CAPS_pubpropertyTimestamp

Gets or sets the entity's timestamp.

NameDescription
System_CAPS_pubmethodReadEntity(IDictionary<String, EntityProperty>, OperationContext)

Populates the entity's properties from the EntityProperty data values in the properties dictionary.

System_CAPS_pubmethodWriteEntity(OperationContext)

Serializes the IDictionary<TKey, TValue> of property names mapped to EntityProperty data values from the entity instance.

The storage client library includes two implementations of ITableEntity that provide for simple property access and serialization:

DynamicTableEntity implements ITableEntity and provides a simple property dictionary to store and retrieve properties. Use a DynamicTableEntity for simple access to entity properties when only a subset of properties are returned (for example, by a select clause in a query), or for scenarios where your query can return multiple entity types with different properties. You can also use this type to perform bulk table updates of heterogeneous entities without losing property information.

TableEntity is an implementation of ITableEntity that uses reflection-based serialization and de-serialization behavior in its ReadEntity and WriteEntity methods. TableEntity-derived classes with methods that follow a convention for types and naming are serialized and deserialized automatically. TableEntity-derived classes must also provide a get-able and set-able public property of a type that is supported by the Microsoft Azure Table service.

Return to top
Anzeigen:
© 2015 Microsoft