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MergeOption Enumeration

July 26, 2012

Determines the synchronization option for sending or receiving entities to or from an Open Data Protocol (OData) service.

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

Syntax

public enum MergeOption

XAML Attribute Usage

<object property="enumerationValue" .../>

Members

	Member name	Description
	AppendOnly	Append 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.
	OverwriteChanges	All current values on the client are overwritten with current values from the Open Data Protocol (OData) service regardless of whether they have been changed on the client.
	PreserveChanges	Current values that have been changed on the client are not modified, but any unchanged values are updated with current values from the Open Data Protocol (OData) service. No client-side changes are lost in this merge.
	NoTracking	Objects are always loaded from the data source. Any property changes made to objects in the object context are overwritten by the data source values.

Remarks

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

Version Information

Windows Phone OS

Supported in: 7.1

Platforms

Windows Phone

Reference

System.Data.Services.Client Namespace

Other Resources

Object Materialization (WCF Data Services)

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