1、添加引用NPOI.dll
2、cs文件头部添加
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using NPOI.HSSF.UserModel;using NPOI.SS.UserModel;using System.IO; |
3、代码如下：
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using System;using System.Collections.Generic;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.Configuration;using WSC.Framework;using System.Data;using WSC.Common;using NPOI.HSSF.UserModel;using NPOI.SS.UserModel;using System.IO;public partial class WorkManage_SMT_SMTMaintain : WSC.FramePage{ SQLHelper sql = new SQLHelper(ConfigurationManager.AppSettings["LocalConnectionString"].ToString()); protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { } } protected void btnReport_Click(object sender, EventArgs e) { string strSql = string.Format(@" select smtpicsmdl.model,smtmdl.submodel,pcbapn,PrdType,cycle,cast((12*3600/cycle) as int) as 'rate',onlineMan,offlineMan,reserve3,ptype_desc,minsqg,maxsqg from smtmdl left join smtpicsmdl on smtpicsmdl.submodel=smtmdl.submodel where pcbapn = '{0}' order by smtpicsmdl.model asc,smtpicsmdl.submodel asc,PrdType asc", this.txtMdmitem.Text.Trim()); DataTable dt = sql.Query(strSql); string strFileName = "SMT机种信息" + DateTime.Now.ToString("yyyyMMddHHmmss"); ExportExcel(dt, strFileName, "SMT机种信息"); } /// <summary> /// DataTable导出Excel /// </summary> /// <param name="dt">datatable数据源</param> /// <param name="strFileName">文件名</param> /// <param name="strSheetName">工作簿名</param> public void ExportExcel(DataTable dt, string strFileName, string strSheetName) { HSSFWorkbook book = new HSSFWorkbook(); ISheet sheet = book.CreateSheet(strSheetName); IRow headerrow = sheet.CreateRow(0); ICellStyle style = book.CreateCellStyle(); style.Alignment = HorizontalAlignment.Center; style.VerticalAlignment = VerticalAlignment.Center; HSSFRow dataRow = (HSSFRow)sheet.CreateRow(0); string strColumns = "主机种,子机种,5E料号,产线类型,CT（S）,rate/12H,线上人力,线外人力,总人力,面别,刮刀下限,刮刀上限"; string[] strArry = strColumns.Split(','); for (int i = 0; i < strArry.Length; i++) { dataRow.CreateCell(i).SetCellValue(strArry[i]); dataRow.GetCell(i).CellStyle = style; } for (int i = 0; i < dt.Rows.Count; i++) { dataRow = (HSSFRow)sheet.CreateRow(i + 1); for (int j = 0; j < dt.Columns.Count; j++) { string ValueType = ""; string Value = ""; if (dt.Rows[i][j].ToString() != null) { ValueType = dt.Rows[i][j].GetType().ToString(); Value = dt.Rows[i][j].ToString(); } switch (ValueType) { case "System.String"://字符串类型 dataRow.CreateCell(j).SetCellValue(Value); break; case "System.DateTime"://日期类型 System.DateTime dateV; System.DateTime.TryParse(Value, out dateV); dataRow.CreateCell(j).SetCellValue(dateV); break; case "System.Boolean"://布尔型 bool boolV = false; bool.TryParse(Value, out boolV); dataRow.CreateCell(j).SetCellValue(boolV); break; case "System.Int16"://整型 case "System.Int32": case "System.Int64": case "System.Byte": int intV = 0; int.TryParse(Value, out intV); dataRow.CreateCell(j).SetCellValue(intV); break; case "System.Decimal"://浮点型 case "System.Double": double doubV = 0; double.TryParse(Value, out doubV); dataRow.CreateCell(j).SetCellValue(doubV); break; case "System.DBNull"://空值处理 dataRow.CreateCell(j).SetCellValue(""); break; default: dataRow.CreateCell(j).SetCellValue(""); break; } dataRow.GetCell(j).CellStyle = style; //设置宽度 sheet.SetColumnWidth(j, (Value.Length + 10) * 256); } } MemoryStream ms = new MemoryStream(); book.Write(ms); Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}.xls", HttpUtility.UrlEncode(strFileName, System.Text.Encoding.UTF8))); Response.BinaryWrite(ms.ToArray()); Response.End(); book = null; ms.Close(); ms.Dispose(); }} |
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原文链接：http://www.cnblogs.com/lengzhan/p/6042911.html
