- //读取临时文件
- GYYW.DA.Common.Base_SqlDataBase daBZDM = new GYYW.DA.Common.Base_SqlDataBase();
- DataSet dsBZDM = daBZDM.GetDataSetBySql("select QCDM,MC,GG from WG_BZDM where QCDM like '02%'");
- //同时将虚拟目录下的Data作为临时文件目录。
- string urlPath = HttpContext.Current.Request.ApplicationPath + "/Data/";
- string physicPath = HttpContext.Current.Server.MapPath(urlPath);
- //string fileName = Guid.NewGuid() + ".Xls";
- string fileName ="DownLoad.Xls";
- string connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + physicPath + fileName +";Extended Properties=Excel 8.0;";
- OleDbConnection objConn = new OleDbConnection(connString);
- OleDbCommand objCmd = new OleDbCommand();
- objCmd.Connection = objConn;
- objCmd.Connection.Open();
- //建立表结构
- objCmd.CommandText = @"CREATE TABLE Sheet1(器材代码 varchar,名称 varchar, 规格 varchar)";
- objCmd.ExecuteNonQuery();
- //建立插入动作的Command
- objCmd.CommandText = "INSERT INTO Sheet1(器材代码, 名称,规格) VALUES (@QCDM, @MC, @GG)";
- objCmd.Parameters.Clear();
- objCmd.Parameters.Add(new OleDbParameter("@QCDM", OleDbType.VarChar));
- objCmd.Parameters.Add(new OleDbParameter("@MC", OleDbType.VarChar));
- objCmd.Parameters.Add(new OleDbParameter("@GG",OleDbType.VarChar));
- //遍历DataSet将数据插入新建的Excel文件中
- foreach (DataRow row in dsBZDM.Tables[0].Rows)
- {
- for (int i=0; i<objCmd.Parameters.Count; i++)
- {
- objCmd.Parameters[i].Value = row[i];
- }
- objCmd.ExecuteNonQuery();
- }
- objCmd.Connection.Close();
- //提供下载
- //清除临时文件
- HttpResponse response = HttpContext.Current.Response;
- response.Clear();
- //为输出作准备
- response.WriteFile(urlPath + fileName);
- string httpHeader="attachment;filename=KCMX.Xls";
- response.AppendHeader("Content-Disposition", httpHeader);
- response.Flush();
- //输出完毕后清除临时文件
- string strSaveDir = "../Data/";
- string strFile = Server.MapPath(strSaveDir + fileName).ToString();
- //string sss = urlPath + fileName;
- System.IO.File.Delete(strFile);//删除临时文件
- response.End();
- //该片段来自于http://www.codesnippet.cn/detail/2508201513546.html
来源: http://www.codesnippet.cn/detail/2508201513546.html