Editing Guid fields

[WilliamKimrey]

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

[AliMirzabeigi]

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

[WilliamKimrey]

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.

[AliMirzabeigi]

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.

[WilliamKimrey]

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