SuperMap.WindowsPhone.Actions.Edit.changeLineSegment C# (CSharp) Method

        private void changeLineSegment(Point2D newPnt)
        {
            int index = (int)draggingVertex.Attributes["Index"];
            int _partIndex = (int)draggingVertex.Attributes["PartIndex"];
            foreach (Feature item in hoverLayer.Features)
            {
                if (item.Attributes.ContainsKey("PartIndex") && (int)item.Attributes["PartIndex"] == _partIndex)
                {
                    if (item.Geometry is GeoLine)
                    {
                        int index0 = (int)item.Attributes["Index0"];
                        int index1 = (int)item.Attributes["Index1"];

                        if (index0 == index)
                        {
                            ( ( item.Geometry ) as GeoLine ).Parts[0][0] = newPnt;
                        }
                        else if (index1 == index)
                        {
                            ( ( item.Geometry ) as GeoLine ).Parts[0][1] = newPnt;
                        }
                    }
                }
            }
        }