刷新视图——清除绘制的Element并刷新视图

        /// <summary>
        /// 清除绘制的Element
        /// </summary>
        /// <param name="axMapControl">地图控件</param>
        static public void ClearElement(AxMapControl axMapControl)
        {
            //  清除绘制的Element
            IGraphicsContainer pGraphicsContainer = axMapControl.Map as IGraphicsContainer;
            pGraphicsContainer.DeleteAllElements();

            //  刷新视图
            axMapControl.Refresh();

        }