topic Re: Editing Guid fields in ArcGIS API for Silverlight Questions

Editing Guid fields

WilliamKimrey — Tue, 21 Sep 2010 16:56:03 GMT

Hello all,

I'm hoping that I'm just doing this wrong, but I can't seem to change a GUID field's value with a FeatureDataGrid. I think this is the way to do it:

FeatureDataGrid.BeginEdit();
FeatureDataGrid.SelectedGraphics[0].Attributes["NAME_GUID"] = newGUID;
FeatureDataGrid.CommitEdit();

If I check the attribute before and after this code is executed the GUIDs are different. However, this change does not persist.

So, am I just doing this wrong, or is there a problem with editing GUIDs?

Thanks,
Will

Re: Editing Guid fields

AliMirzabeigi — Tue, 21 Sep 2010 17:38:48 GMT

Like the ObjectID fields GUID (GlobalID) fields are automatically assigned by the server and cannot be modified by users.

Re: Editing Guid fields

WilliamKimrey — Tue, 21 Sep 2010 18:28:07 GMT

Thanks for the heads up. Just to clarify, I can't edit ANY Guid field? Or can i just not edit GlobalID fields. I don't have GlobalIDs for this featureclass so I just want to make sure that it's a limitation on the GUID type rather than specific field names.

Re: Editing Guid fields

AliMirzabeigi — Tue, 21 Sep 2010 18:43:29 GMT

GUID fields are identified as type of esriFieldTypeGlobalID (this is what I meant by GlobalID fields in my previous post) and they cannot be edited (assigned by the server) regardless of their field names.

Re: Editing Guid fields

WilliamKimrey — Tue, 21 Sep 2010 18:46:55 GMT

Ok, thanks for the clarification. Guess I'll have to figure out something else.