ESRI.ArcGIS.Location.IDatabaseLocatorWorkspace vs. IFeatureWorkspace

[ShaningYu]

The IFeatureWorkspace has the methods like that: OpenFeatureClass(), OpenTable(), ...
The ESRI.ArcGIS.Location.IDatabaseLocatorWorkspace does not have this kind of methods.  In order to open a LocatorClass in the ESRI.ArcGIS.Location.IDatabaseLocatorWorkspace, how can it be done?
I wish ESRI's Linear Reference group or some ArcObjects professionals can help me for this issue.  Thanks.

[ShaningYu · Accepted solution]

Did some researches again but got nothing really helpful.  Since  I have adapted an alternative approach to code (http://forums.arcgis.com/threads/93553-Get-the-point-along-a-curve).  This instance is to be closed.