使用NPOI库高效导出Excel

创建常用的xls文件

使用Npoi创建一个常用的xls文件
 //创建一个常用的xls文件
        private void button3_Click(object sender, EventArgs e)
        {          
            IWorkbook wb = new HSSFWorkbook();
            //创建表  
            ISheet sh = wb.CreateSheet("zhiyuan");
            //设置单元的宽度  
            sh.SetColumnWidth(0, 15 * 256);
            sh.SetColumnWidth(1, 35 * 256);
            sh.SetColumnWidth(2, 15 * 256);
            sh.SetColumnWidth(3, 10 * 256);
            int i = 0;
            #region 练习合并单元格
            sh.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, 3));

            //CellRangeAddress（）该方法的参数次序是：开始行号，结束行号，开始列号，结束列号。
  
            IRow row0 = sh.CreateRow(0);
            row0.Height = 20 * 20;
            ICell icell1top0 = row0.CreateCell(0);
            icell1top0.CellStyle = Getcellstyle(wb, stylexls.头);
            icell1top0.SetCellValue("标题合并单元");
            #endregion
            i++;
            #region 设置表头
            IRow row1 = sh.CreateRow(1);
            row1.Height = 20 * 20;

            ICell icell1top = row1.CreateCell(0);
            icell1top.CellStyle = Getcellstyle(wb, stylexls.头);
            icell1top.SetCellValue("网站名");

            ICell icell2top = row1.CreateCell(1);
            icell2top.CellStyle = Getcellstyle(wb, stylexls.头);
            icell2top.SetCellValue("网址");

            ICell icell3top = row1.CreateCell(2);
            icell3top.CellStyle = Getcellstyle(wb, stylexls.头);
            icell3top.SetCellValue("百度快照");

            ICell icell4top = row1.CreateCell(3);
            icell4top.CellStyle = Getcellstyle(wb, stylexls.头);
            icell4top.SetCellValue("百度收录");
            #endregion  
  
            using(FileStream stm=File.OpenWrite(@"c:/myMergeCell.xls"))
            {
                wb.Write(stm); 
                MessageBox.Show("提示：创建成功！");
            }
        }



        #region 定义单元格常用到样式的枚举
        public enum stylexls
        {