NPOI画线踩坑

    应报表需要，图标需要用线链接，在连线时，发现线条的坐标比较坑，其中  CreateAnchor中的col1，row1参数本以为是起始单元格的位置，踩坑过程中发现col1仅仅代表一个列的的位置，并不和row1一起，且必须 col1小于col2，row1小于row2 否则生成的excel打开时会报错！！！！！

 图形类型：ShapeTypes.Line 为下划线    ShapeTypes.LineInv 为上划线

        /// <summary>
        /// 画线
        /// </summary>
        /// <param name="sheet"></param>
        /// <param name="x1"></param>
        /// <param name="y1"></param>
        /// <param name="x2"></param>
        /// <param name="y2"></param>
        /// <param name="c1"></param>
        /// <param name="r1"></param>
        /// <param name="c2"></param>
        /// <param name="r2"></param>
        private static void DrawWire(ISheet sheet, int c1 = 4, int r1 = 8, int c2 = 5, int r2 = 9, ShapeTypes shapeType = ShapeTypes.Line)
        {
            XSSFDrawing drawing = (XSSFDrawing)sheet.CreateDrawingPatriarch();
            XSSFClientAnchor anchor = (XSSFClientAnchor)drawing.CreateAnchor(480000, 455000, 320000, 340000, c1, r1, c2, r2);
            XSSFSimpleShape wire = drawing.CreateSimpleShape(anchor);
            ////设置边框颜色
            wire.ShapeType = (int)shapeType;
           
            wire.SetLineStyleColor(0, 0, 0);
        }

        /// <summary>
        /// 画图形
        /// </summary>
        /// <param name="sheet"></param>
        /// <param name="i"></param>
        /// <param name="type"></param>
        private static void DrawGraph(ISheet sheet, int i, int col, int type)
        {
            XSSFDrawing drawing = (XSSFDrawing)sheet.CreateDrawingPatriarch();
            XSSFClientAnchor anchor = (XSSFClientAnchor)drawing.CreateAnchor( 323850, 269875,542290, 498475, col, 8 + i,col,8 + i);
            XSSFSimpleShape xss = drawing.CreateSimpleShape(anchor);
            xss.ShapeType = type;
            ////设置边框颜色
            xss.SetLineStyleColor(0, 0, 0);

        }