In-memory workspace: how to check the existance of feature layer and tables?

SuiHuang

Hi Everybody:

    I am developing an ArcMap 10 (service pack 4) customize tool. I want to use in-memory workspace to hold some temporary data, but found that the in-memory workspace I created does not support IWorkspace2 interface such that I cannot use IWorkspace2.NameExists to check whether table or feature class is already created. Following is the screenshot of the Watch window showing this fact:
[ATTACH=CONFIG]16477[/ATTACH]

   Is there any alternative to check the existance of objects in the in-memory workspace?
   Thank you!

InMemoryWorkspace.PNG

Runtime_Performance.png

kenbuja

How about looping through the datasets in the workspace and seeing if the name ("YourFClass") is in there? I've tested this with an In-memory workspace.

Dim pEnumDS As ESRI.ArcGIS.Geodatabase.IEnumDataset Dim pDataset As ESRI.ArcGIS.Geodatabase.IDataset  pEnumDS = pWorkspace.Datasets(ESRI.ArcGIS.Geodatabase.esriDatasetType.esriDTAny)  Do Until pDataset Is Nothing     If pDataset.Name = "YourFClass" then         System.Windows.Forms.MessageBox.Show("Exists")         Exit Do     pDataset = pEnumDS.Next Loop