Get Iwrokspace using IFeatureClass in ArcObject C3

By using this function you can get Iworkspace using IFeatureClass.

public IWorkspace getWorkSpace(IFeatureClass fetCls)
{
   IWorkspace res = null;
   try
   {
      IFeatureDataset pFeatDataSet = fetCls.FeatureDataset;
      IDataset pDataSet = pFeatDataSet as IDataset;
      res = pDataSet.Workspace;
   }
   catch (Exception ex)
   {
      return null;

   }

   return res;

}