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How to instantiate IWorkspace

StevenMumby

Hi guys

I'm writing an ArcMap class library. This will add a menu item to ArcMap. Once the menu option is clicked, I need to set my ArcMaps document into edit mode. I've found a sample piece of code to help me accomplish this, but need to pass in a reference to an object of type IWorkspace. This is being written with ArcObjects 9.3. I currently have access to instances of IApplication and IMaps in my solution. How can I accomplish this?

Tks

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Accepted answers

Hornbydd

pFeatureLayer is the pointer to a layer. So you would get a handle on a layer in a map through IMap.Layer. This returns a ILayer pointer. You would typically cast that into an IFeatureLayer which gives you access to many other properties such as the FeatureClass.

Duncan

All comments

Hornbydd

You can get a handle on the Workspace of a layer in the map document through IDataset. So something like:

Dim pDS as IDataset
pDS = pFeaturelayer
Dim pWS as IWorkspace
pWS = pDS.Workspace

Duncan

StevenMumby

Thanks Duncan. Sorry for additional question, but what is pFeatureLayer? I'm a web developer primarily and this is my first go at woring with arcGIS.

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Hornbydd

StevenMumby

Ah, it was the casting that was throwing me off. This seems to work:

            // set the map into edit mode//
            IMap mMap = mMaps.get_Item(0);
            ILayer mLayer = mMap.get_Layer(0);
            IFeatureLayer mFeatureLater = (IFeatureLayer)mLayer;
            IDataset mDataSet = mFeatureLater.FeatureClass.FeatureDataset;
            IWorkspace mWorkSpace = mDataSet.Workspace;
            startEditing(mWorkSpace);

Tks for the help, Duncan. Much appreciated.

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