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MergeOption Enumeration

Determines the synchronization option for sending or receiving entities to or from a data service.

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

public enum MergeOption

Member nameDescription
AppendOnlyAppend new entities only. Existing entities or their original values will not be modified. No client-side changes are lost in this merge. This is the default behavior.
OverwriteChangesAll current values on the client are overwritten with current values from the data service regardless of whether they have been changed on the client.
PreserveChangesCurrent values that have been changed on the client are not modified, but any unchanged values are updated with current values from the data service. No client-side changes are lost in this merge.
NoTrackingObjects are always loaded from the data source. Any property changes made to objects in the object context are overwritten by the data source values.

This value is used when materializing objects. Set this property to the appropriate materialization option before executing any queries or updates to the data service. The default value is MergeOption.AppendOnly.

Silverlight

Supported in: 5, 4, 3

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

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