topic Creating a list of features from a RowCursor in ArcGIS Pro SDK Questions

Creating a list of features from a RowCursor

EricPfirman — Wed, 13 Dec 2023 12:59:19 GMT

I am using a RowCursor to build a List of Features. In the While loop, my debug statement returns OBJECTIDs 1 and 2, but in the For loop after the RowCursor, the OBJECTIDs are 2 and 2. Why?

Dim mm as MapMember Dim pPointFeatures As List(Of Feature) = New List(Of Feature) Dim qf as ArcGIS.Core.Data.QueryFilter qf.WhereClause = "OBJECTID IN (1, 2)" Using c As RowCursor = CType(mm, BasicFeatureLayer).Search(qf) While c.MoveNext Debug.Print(CType(c.Current, Feature).Item("OBJECTID").ToString()) ' Prints 1 and 2 pPointFeatures.Add(CType(c.Current, Feature)) End While End Using For Each p In pPointFeatures Debug.Print(p("OBJECTID").ToString()) ' Prints 2 and 2 Next

Re: Creating a list of features from a RowCursor

KenBuja — Wed, 13 Dec 2023 13:44:10 GMT

Your code is using a recycling cursor (the default method). You have set the useRecyclingCursor parameter to false when using the Search method.

Using c As RowCursor = CType(mm, BasicFeatureLayer).Search(qf, false)

Read a little more about recycling cursors here

Re: Creating a list of features from a RowCursor

EricPfirman — Wed, 13 Dec 2023 14:04:45 GMT

Wow! Thanks! I never knew. Small note, I had to add GetTable() so I could use the Table Search and then it worked.

Using c As RowCursor = CType(mm, BasicFeatureLayer).GetTable().Search(qf, False)