IO流
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Data; using System.IO; using System.Text; namespace Reorts.HelpClass { public class Class1 { public DataTable Dat(DataTable dt) { DataTable Tables = new DataTable(); Tables.Columns.Add("时间参数"); for (int i = 0; i < 24; i++) { Tables.Columns.Contains(""); Tables.Columns.Add(i + ":00"); } foreach (DataRow item in dt.Rows) { DataRow DR = Tables.NewRow(); // Tables.Rows.Add DR["时间参数"] = new Reorts.Controllers.ReortsController().TAGStr(item["TAG"].ToString()); for (int i = 0; i < 24; i++) { DR[i + ":00"] = item[i.ToString()].ToString(); } Tables.Rows.Add(DR); } return Tables; } public void ExportExcel(DataTable dt,string ExcelName) { //设置导出文件路径 string path = HttpContext.Current.Server.MapPath("Export/"); //设置新建文件路径及名称 // string savePath = path + DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss") + ".xls"; string savePath = "C:\\" + ExcelName + ".xls"; //创建文件 FileStream file = new FileStream(savePath, FileMode.CreateNew, FileAccess.Write); //以指定的字符编码向指定的流写入字符 StreamWriter sw = new StreamWriter(file, Encoding.GetEncoding("GB2312")); StringBuilder strbu = new StringBuilder(); strbu.Append("表头"); strbu.Append(Environment.NewLine); strbu.Append("时间"+DateTime.Now.ToString("yyyy年MM月dd日")); strbu.Append(Environment.NewLine); //写入标题 for (int i = 0; i < dt.Columns.Count; i++) { strbu.Append(dt.Columns[i].ColumnName.ToString() + "\t"); } //加入换行字符串 strbu.Append(Environment.NewLine); //写入内容 for (int i = 0; i < dt.Rows.Count; i++) { for (int j = 0; j < dt.Columns.Count; j++) { strbu.Append(dt.Rows[i][j].ToString() + "\t"); } strbu.Append(Environment.NewLine); } sw.Write(strbu.ToString()); sw.Flush(); file.Flush(); sw.Close(); sw.Dispose(); file.Close(); file.Dispose(); } } }
使用io流的方式导出Excel到浏览器
原文地址:https://www.cnblogs.com/xianyv/p/11949884.html
时间: 2024-10-11 03:58:45