NX二次开发C#--设置过滤器

            //设置选择过滤
           Selection.SelectionAction action = Selection.SelectionAction.ClearAndEnableSpecific;      
            Selection.MaskTriple[] maskTriples = new Selection.MaskTriple[2];
            //过滤器设置为只能选择圆弧面
            maskTriples[0] = new Selection.MaskTriple(UFConstants.UF_solid_type, UFConstants.UF_all_subtype, UFConstants.UF_UI_SEL_FEATURE_CYLINDRICAL_FACE);
            selection0.GetProperties().SetSelectionFilter("SelectionFilter", action, maskTriples);