Why I mustRefresh instead of partial refresh when trying to unselect feature?

Discussion created by kjulistened on Nov 1, 2013
Latest reply on Nov 4, 2013 by kjulistened
Hi friends,I am new to the arc object and the engine.
    Using 'IMapControlDefault.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, null);' or 'IMapControlDefault.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null);' does not work at all.
    using 'IMapControlDefault.Refresh();' or 'IMapControlDefault.ActiveView.Refresh();' instead will work.
    I have searched informations on the esri help document,but it seems none suit or can explain why.