topic Re: ISelectionSet2 automation Error? in ArcObjects SDK Questions

ISelectionSet2 automation Error?

MattFancher — Thu, 14 Apr 2011 18:59:04 GMT

The following code produces an error:

Public Sub Failure()

    Dim pMxDoc As IMxDocument
    Set pMxDoc = ThisDocument
    Dim pFeatureLayer As IFeatureLayer
    Set pFeatureLayer = pMxDoc.FocusMap.Layer(0)

    MsgBox pFeatureLayer.Name 'displays correct layer name

    Dim pFeatureSelection As IFeatureSelection
    Set pFeatureSelection = pFeatureLayer
    Dim pSelectionSet As ISelectionSet2
    Set pSelectionSet = pFeatureSelection.SelectionSet

    MsgBox pSelectionSet.Count 'displays correct count

    Dim pFeatureCursor As IFeatureCursor
    pSelectionSet.Update Nothing, True, pFeatureCursor 'this line produces an automation error
    Dim pFeature As IFeature
    Set pFeature = pFeatureCursor.NextFeature

    MsgBox pFeature.Value(2)

End Sub

The exact error message is:

Run-time error '-2147467259 (800040005)':

Automation error
Unspecified error

Any advice on what I'm doing wrong? I'm working in ArcGIS 9.3.1.

Re: ISelectionSet2 automation Error?

DuncanHornby — Fri, 15 Apr 2011 15:31:28 GMT

Try setting this line:

pSelectionSet.Update Nothing, True, pFeatureCursor

to:

pSelectionSet.Update Nothing, False, pFeatureCursor

Also help file says:

All edits to features that participate in a Topology or Geometric Network must be bracketed within an edit operation.

Re: ISelectionSet2 automation Error?

MattFancher — Fri, 15 Apr 2011 17:27:40 GMT

Duncan,

Thank you for the reply. Unfortunately, I still get the error after making the substitution you suggested. Also, no features in the map participate in a topology or a geometric network.

Matt

Re: ISelectionSet2 automation Error?

DuncanHornby — Fri, 15 Apr 2011 23:11:00 GMT

Matt,

What is the format of your data? I tried your code on some random shapefile I have and it worked. Your data isn't some sort of compressed (hence read only) dataset?

Duncan