I am new to arcobject i have learned how to add a feature class by specifying its name in code through gxdialogue.

i want to change it so i could directly select the the featureclass instead mentioning its name in coding (i.e. want to remove hardcoding).

can you please suggest what changes i need to do in code.

below is the code:

  IGxDialog gxd = new GxDialogClass();
        gxd.AllowMultiSelect = false;
        gxd.ButtonCaption = "Add featureclass";
        gxd.Title = "Add FeatureClasses";
        gxd.RememberLocation = true;
        IGxObjectFilter gxObjFilter = new GxFilterPersonalGeodatabases();

        gxd.ObjectFilter = gxObjFilter;
        IEnumGxObject gxEnumObj;
        gxd.DoModalOpen(ArcMap.Application.hWnd, out gxEnumObj);
        IGxObject gxObj = gxEnumObj.Next();
        //getting the address of PGDB
        string WSAddress = gxObj.FullName;

        IMxDocument mxdoc = ArcMap.Application.Document as IMxDocument;

        IWorkspaceFactory wsf = new AccessWorkspaceFactoryClass();

        IWorkspace ws = wsf.OpenFromFile(WSAddress, arcMap.Application.hWnd);

        IFeatureWorkspace fws = ws as IFeatureWorkspace;
        IFeatureClass fc = fws.OpenFeatureClass("FetureClassName");

        IFeatureLayer fl = new FeatureLayerClass();
        fl.Name = "Feature";
        fl.FeatureClass = fc;


1 Answer 1


I would do something like this for feature classes:

private IGxDialog getDialog(string title, IGxObjectFilter filter)
    IGxDialog pGxDialog = new GxDialog();
    IGxObjectFilter pGxObjFilter = filter;
    pGxDialog.AllowMultiSelect = true;
    pGxDialog.ObjectFilter = pGxObjFilter;
    pGxDialog.Title = title;
    pGxDialog.ButtonCaption = "OK";

    return pGxDialog;

private void getFeatureClass(string title)
    IEnumGxObject pEnumGxObj = null;
    IGxDialog dialog = getDialog(title, new GxFilterFeatureClasses());

    if (dialog.DoModalOpen(0, out pEnumGxObj))
        IGxObject pGxObj = pEnumGxObj.Next();

        if(pGxObj != null)
            IGxDataset gxDataset = pGxObj as IGxDataset;
            IName name = gxDataset.Dataset.FullName;

            //open your feature class here or later
            IFeatureClass fc = name.Open() as IFeatureClass;

The biggest thing is to turn the IGxObject into an IGxDataset. You can get an idea of all the different objects a IGxObject can represent and when to use them here.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.