ArcMapAddinDistanceAndDirection.ViewModels.TabBaseViewModel.ClearTempGraphics C# (CSharp) Метод

        internal void ClearTempGraphics()
        {
            var mxdoc = ArcMap.Application.Document as IMxDocument;
            if (mxdoc == null)
                return;
            var av = mxdoc.FocusMap as IActiveView;
            if (av == null)
                return;
            var gc = av as IGraphicsContainer;
            if (gc == null)
                return;

            RemoveGraphics(gc, true);

            av.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
            RaisePropertyChanged(() => HasMapGraphics);
        }