I have a polygon layer (pLayer) in a project that is created with a Definition Query to a FeatureClass within a FeatureDataset in a Personal Geodatabase (.mdb). I am trying to use ArcObjects (9.2, Visual Studio 2005) to create a 1 mile buffer around the features in the layer. I'm having a problem with the following code:
If the code is run as you see it now, it cycles through all of the features in the source featureclass, not just those defined by the definition query. If I try to use the definition query as a query filter (uncomment the 3 lines of code and change the search parameter from Nothing to pQF), it errors out on the Search with the message
'Create a union-ed geometry of all of the features in the layer
Dim pFL2 As IFeatureLayer2 = pLayer
Dim pFClass As IFeatureClass = pFL2.FeatureClass
'Dim pFLD As IFeatureLayerDefinition = pFL2
'Dim pQF As IQueryFilter = New QueryFilter
'pQF.WhereClause = pFLD.DefinitionExpression
Dim pFCursor As IFeatureCursor = pFClass.Search(Nothing, True) 'Replace Nothing with pQF
Dim pFeature As IFeature = pFCursor.NextFeature
Dim pBag As IGeometryCollection = New GeometryBag
Do Until pFeature Is Nothing
pBag.AddGeometry(pFeature.Shape, , 0)
pFeature = pFCursor.NextFeature
Any hints would be appreciated.
A first chance exception of type 'System.Runtime.InteropServices.COMException' occurred...