求助，使用NPOI导出EXCEL设置单元格边框的问题
以下是网上找的一个NPOI的类， 在“#region 填充内容”(152行) 设置单元格边框有错。不知要代码怎么改。求助
using System;using System.Collections.Generic;using System.Data;using System.IO;using System.Text;using System.Web;using NPOI;using NPOI.Util;using NPOI.HPSF;using NPOI.HSSF.UserModel;using NPOI.HSSF.Util;using NPOI.POIFS;using NPOI.POIFS.FileSystem;using NPOI.SS.Util;using NPOI.SS.UserModel;namespace PMS.Common{ public class NPOIHelper { /// <summary> /// DataTable导出到Excel文件 /// </summary> /// <param name="dtSource">源DataTable</param> /// <param name="strHeaderText">表头文本</param> /// <param name="strFileName">保存位置</param> public static void Export(DataTable dtSource, string strHeaderText, string strFileName) { using (MemoryStream ms = Export(dtSource, strHeaderText)) { using (FileStream fs = new FileStream(strFileName, FileMode.Create, FileAccess.Write)) { byte[] data = ms.ToArray(); fs.Write(data, 0, data.Length); fs.Flush(); } } } /// <summary> /// DataTable导出到Excel的MemoryStream /// </summary> /// <param name="dtSource">源DataTable</param> /// <param name="strHeaderText">表头文本</param> public static MemoryStream Export(DataTable dtSource, string strHeaderText) { HSSFWorkbook workbook = new HSSFWorkbook(); HSSFSheet sheet = (HSSFSheet)workbook.CreateSheet(); #region 右击文件 属性信息 { DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation(); dsi.Company = "力天科技"; workbook.DocumentSummaryInformation = dsi; SummaryInformation si = PropertySetFactory.CreateSummaryInformation(); //si.Author = "文件作者信息"; //填加xls文件作者信息 //si.ApplicationName = "创建程序信息"; //填加xls文件创建程序信息 //si.LastAuthor = "最后保存者信息"; //填加xls文件最后保存者信息 //si.Comments = "作者信息"; //填加xls文件作者信息 //si.Title = "标题信息"; //填加xls文件标题信息 //si.Subject = "主题信息";//填加文件主题信息 si.CreateDateTime = DateTime.Now; workbook.SummaryInformation = si; } #endregion HSSFCellStyle dateStyle = (HSSFCellStyle)workbook.CreateCellStyle(); HSSFDataFormat format = (HSSFDataFormat)workbook.CreateDataFormat(); dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd"); //取得列宽 int[] arrColWidth = new int[dtSource.Columns.Count]; foreach (DataColumn item in dtSource.Columns) { arrColWidth[item.Ordinal] = Encoding.GetEncoding(936).GetBytes(item.ColumnName.ToString()).Length; } for (int i = 0; i < dtSource.Rows.Count; i++) { for (int j = 0; j < dtSource.Columns.Count; j++) { int intTemp = Encoding.GetEncoding(936).GetBytes(dtSource.Rows[i][j].ToString()).Length; if (intTemp > arrColWidth[j]) { arrColWidth[j] = intTemp; } } } int rowIndex = 0; foreach (DataRow row in dtSource.Rows) { #region 新建表，填充表头，填充列头，样式 if (rowIndex == 65535 || rowIndex == 0) { if (rowIndex != 0) { sheet = (HSSFSheet)workbook.CreateSheet(); } #region 表头及样式 { HSSFRow headerRow = (HSSFRow)sheet.CreateRow(0); headerRow.HeightInPoints = 25; headerRow.CreateCell(0).SetCellValue(strHeaderText); HSSFCellStyle headStyle = (HSSFCellStyle)workbook.CreateCellStyle(); headStyle.Alignment = HorizontalAlignment.CENTER; HSSFFont font = (HSSFFont)workbook.CreateFont(); font.FontHeightInPoints = 20; font.Boldweight = 700; headStyle.SetFont(font); headerRow.GetCell(0).CellStyle = headStyle; sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, dtSource.Columns.Count - 1)); //headerRow.Dispose(); } #endregion #region 列头及样式 { HSSFRow headerRow = (HSSFRow)sheet.CreateRow(1); HSSFCellStyle headStyle = (HSSFCellStyle)workbook.CreateCellStyle(); headStyle.Alignment = HorizontalAlignment.CENTER; HSSFFont font = (HSSFFont)workbook.CreateFont(); //设置单元格边框 headStyle.BorderBottom = CellBorderType.THIN; headStyle.BorderLeft = CellBorderType.THIN; headStyle.BorderRight = CellBorderType.THIN; headStyle.BorderTop = CellBorderType.THIN; font.FontHeightInPoints = 10; font.Boldweight = 700; headStyle.SetFont(font); foreach (DataColumn column in dtSource.Columns) { headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName); headerRow.GetCell(column.Ordinal).CellStyle = headStyle; //设置列宽 sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256); } //headerRow.Dispose(); } #endregion rowIndex = 2; } #endregion #region 填充内容 HSSFRow dataRow = (HSSFRow)sheet.CreateRow(rowIndex); //HSSFCellStyle tdStyle = (HSSFCellStyle)workbook.CreateCellStyle(); ////设置单元格边框 //tdStyle.BorderBottom = CellBorderType.THIN; //tdStyle.BorderLeft = CellBorderType.THIN; //tdStyle.BorderRight = CellBorderType.THIN; //tdStyle.BorderTop = CellBorderType.THIN; foreach (DataColumn column in dtSource.Columns) { HSSFCell newCell = (HSSFCell)dataRow.CreateCell(column.Ordinal); //newCell.CellStyle = tdStyle; string drValue = row[column].ToString(); switch (column.DataType.ToString()) { case "System.String"://字符串类型 newCell.SetCellValue(drValue); break; case "System.DateTime"://日期类型 DateTime dateV; DateTime.TryParse(drValue, out dateV); newCell.SetCellValue(dateV); newCell.CellStyle = dateStyle;//格式化显示 break; case "System.Boolean"://布尔型 bool boolV = false; bool.TryParse(drValue, out boolV); newCell.SetCellValue(boolV); break; case "System.Int16"://整型 case "System.Int32": case "System.Int64": case "System.Byte": int intV = 0; int.TryParse(drValue, out intV); newCell.SetCellValue(intV); break; case "System.Decimal"://浮点型 case "System.Double": double doubV = 0; double.TryParse(drValue, out doubV); newCell.SetCellValue(doubV); break; case "System.DBNull"://空值处理 newCell.SetCellValue(""); break; default: newCell.SetCellValue(""); break; } } #endregion rowIndex++; } using (MemoryStream ms = new MemoryStream()) { workbook.Write(ms); ms.Flush(); ms.Position = 0; sheet.Dispose(); //workbook.Dispose();//一般只用写这一个就OK了，他会遍历并释放所有资源，但当前版本有问题所以只释放sheet return ms; } } }