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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

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.

AlfredBaldenweck_1-1764724058216.png

Hornbydd

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.

TanuHoque_0-1764717090476.png

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

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