topic Re: IFeatureLayer and IFeatureCursor in ArcObjects SDK Questions

IFeatureLayer and IFeatureCursor

Anonymous User — Mon, 31 May 2010 08:50:14 GMT

Original User: newbyproger

I have some features in FeatureCursor from FutureLayer (by searching in FeatureClass). How can i get features IDs from FutureLayer which are different from features IDs in FutureCursor? (like switching selection) There are a lot of features, that is why simple double loop with comparing IDs is not suitable (it takes a lot of time).

Re: IFeatureLayer and IFeatureCursor

JonathanBailey — Mon, 31 May 2010 14:16:21 GMT

Can you modify your QueryFilter to apply the NOT operator to your WhereClause?

Re: IFeatureLayer and IFeatureCursor

Anonymous User — Tue, 01 Jun 2010 01:39:09 GMT

Original User: newbyproger

in what way? I use ISpatialFilter and collect features in FeatureCursor with geometry.

Re: IFeatureLayer and IFeatureCursor

JonathanBailey — Tue, 01 Jun 2010 21:23:19 GMT

In this case, maybe try using the SelectionSet class. You could try something like this:

Get a SelectionSet of the features you've selected from the FeatureLayer using the IFeatureSelection.SelectionSet property.

Use the ISelectionSet.Combine method to create a new SelectionSet containing the features that are unselected. You'll need to create a new SelectionSet with your FeatureLayer's FeatureClass as the target, and another to contain the results of the combine operation. You might have to experiment with which SelectionSet to call the Combine method on to get the correct result.

Apply the resulting SelectionSet to your FeatureLayer using the IFeatureSelection.SelectionSet property.