ArcMap retains fields of removed Table.

DuncanHornby — Thu, 14 Mar 2013 16:37:52 GMT

All,

I have developed an AddIn for ArcMap 10.1 using VB .net 2010.

My tool writes data it creates to a dBase file which gets loaded into the TOC. During processing the tool can create up to 25 fields.

Sometimes a user will need to rebuild this table with its initial set of 3 fields (by selecting a button on toolbar).

When the user clicks on the create table button my code searches for the table in the TOC and removes it with the following code:

 pStandAloneTableCollection.RemoveStandaloneTable(pStandAloneTable) pMXDocument.UpdateContents()

The code then continues by deleting the existing dBase file and then recreates with the default set of 3 fields. This all works fine. The table is loaded back into the TOC with the following code:

pStandAloneTable = New StandaloneTableClass pStandAloneTable.Table = pTable pStandAloneTable.Name = Me.TextBox1.Text pStandAloneTableCollection.AddStandaloneTable(pStandAloneTable) pMXDocument.UpdateContents()

If I then go to the Table in ArcMap and open it I see all the previous fields (with zero values) and not an attribute table with just 3 fields. It's as if ArcMap has held onto the schema of the table it had removed, any ideas on how to force a refresh?

Duncan

It was how I was deleting the table.

DuncanHornby — Fri, 15 Mar 2013 15:45:52 GMT

All,

FYI I resolved the problem, it appears to be with the way I was deleting the dBase file. Originally I was deleting the table using the following code:

My.Computer.FileSystem.DeleteFile(sFullPath)

I changed this to the more verbose method using ArcObjects:

Dim pWorkspaceFactory As IWorkspaceFactory pWorkspaceFactory = New ShapefileWorkspaceFactoryClass Dim pFeatureWorkspace As IFeatureWorkspace pFeatureWorkspace = pWorkspaceFactory.OpenFromFile(sPath, 0) pTable = pFeatureWorkspace.OpenTable(Me.TextBox1.Text) Dim pDataset As IDataset pDataset = DirectCast(pTable, IDataset) If pDataset.CanDelete Then     ' Delete and clean up     pDataset.Delete()     pTable = Nothing     pTable = Nothing     pFeatureWorkspace = Nothing     pWorkspaceFactory = Nothing End If

This has resolved my problem.

topic ArcMap retains fields of removed Table. in ArcObjects SDK Questions

ArcMap retains fields of removed Table.

It was how I was deleting the table.