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DataServiceContext.BeginSaveChanges Method (SaveChangesOptions, AsyncCallback, Object)

Asynchronously submits the pending changes to the data service collected by the DataServiceContext since the last time changes were saved.

Namespace:  System.Data.Services.Client
Assembly:  System.Data.Services.Client (in System.Data.Services.Client.dll)

public IAsyncResult BeginSaveChanges(
	SaveChangesOptions options,
	AsyncCallback callback,
	Object state
)

Parameters

options
Type: System.Data.Services.Client.SaveChangesOptions
The options for how the client can save the pending set of changes.
callback
Type: System.AsyncCallback
The delegate to call when the operation is completed.
state
Type: System.Object
The user-defined state object that is used to pass context data to the callback method.

Return Value

Type: System.IAsyncResult
An IAsyncResult that represents the status of the asynchronous operation.

Changes are added to the DataServiceContext by calling the AddObject, AddLink, AttachTo, AttachLink, DeleteObject, DeleteLink, Detach, or DetachLink.

If Batch is set, all pending changes are included in a single change set in a batch and submitted to the data service in a single HTTP request. This requires that the target service supports batching.

If Batch is not set:

  • Changes are sent to the data service such as in the SaveChanges() method: one operation to one HTTP request.

  • The StatusCode is always 200.

  • The Headers property returns an empty collection.

If ContinueOnError is set:

  • If an error occurs processing an operation in a change set, the subsequent operations in the change set will not be tried; however, the data service will continue to process the next change set in the batch.

  • This option cannot be set when Batch is set because when batching is enabled, all operations are positioned in a single change set.

If ContinueOnError is not set:

  • If an error occurs while processing an operation, no additional operations are processed by the data service.

A response is generated telling the client which operations were executed, their results, and what operations were not tried because of the error.

.NET Framework

Supported in: 4, 3.5 SP1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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