IWorkspaceFactory, IWorkspace how to open feature class?

Question

Hello everyone,

I  am currently opening an SDE feature class  using "OpenFeatureClassFromString"

pathOutput = "C:\SDEConnections\EditingDatabase.sde\FeatureDataset\FeatureClass"

Dim pFeatureClass As IFeatureClass

pFeatureClass = gputilities.OpenFeatureClassFromString(pathOutput)

I would like to open a IWorkspaceFactory and a IWorkSpace and then open the feature class from the workspace.

Dim WorkspaceFactory As IWorkspaceFactory = New WorkspaceFactory()

Dim Workspace As IWorkspace = WorkspaceFactory.OpenFromFile(pathWorkspaceOutput, 0)

????

Thanks

JoseSanchez · Answer

i Frank,

This is how I did it:

Dim muWorkspaceEdit As IMultiuserWorkspaceEdit = CType(pFeatureWorkspace, IMultiuserWorkspaceEdit)

Dim pworkspaceEdit As IWorkspaceEdit = CType(pFeatureWorkspace, IWorkspaceEdit)

FrankHellwich1 · Answer

Hello Jose, I'm no vb.net-guru but I think casting in vb.net is done by using DirectCast/TryCast: 1. if you're sure that casting will succeed (otherwise it throws an exception so use an exception handler) use DirectCast: Dim pFWsp as IFeatureWorkspace= DirectCast(mySdeWorkspace, IFeatureWorkspace) Dim pFClass as IFeatureClass = pFWsp.OpenFeatureClass(name) ‍‍‍ 2. if you're not sure - use TryCast Dim pFWsp as IFeatureWorkspace= TryCast(mySdeWorkspace, IFeatureWorkspace) if pFWsp IsNot Nothing then Dim pFClass as IFeatureClass = pFWsp.OpenFeatureClass(name) ... End if‍‍‍‍‍

JoseSanchez · Answer

How do you write this line in vb.net:

IFeatureClass pFClass = ((IFeatureWorkspace)mySdeWorkspace).OpenFeatureClass(name);