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Used to specify merge behavior when a fetchData request to the server returns entities which are already being tracked for changes by the DataContext.
Namespace: Sys.Data
Inherits: None
var a = Sys.Data.MergeOption.appendOnly;
var b = Sys.Data.MergeOption.overwriteChanges;
Members
Member name |
Description |
|---|---|
appendOnly |
The integer 0 that indicates that the appendOnly mode is used for adding new items. This option preserves any unsaved changes to the current item, rather than overwriting with values obtained from the server. |
overwriteChanges |
The integer 1 that indicates that the overwriteChanges mode is used for adding new items. This option will overwrite any unsaved changes to the current item, with the values obtained from the server. |
Example
The following is an example of how to use Sys.Data.MergeOption Enumeration.
<script type="text/javascript">
var imagesDC = new Sys.Data.AdoNetDataContext();
imagesDC.set_serviceUri("../Services/ImagesDataService.svc");
imagesDC.set_mergeOption(Sys.Data.MergeOption.appendOnly);
imagesDC.initialize();
</script>