General Excel export operation

Background export data, summarize their export experience for MVC project:

Problems encountered, Firefox and non-Firefox browsers, we have to deal with it:

The figure is Firefox garbage problem:

            Dt = DataTable new new DataTable ( " user login statistical management " );
            DataColumn dc1 = new DataColumn("登录用户", Type.GetType("System.String"));
            DataColumn dc2 = new DataColumn("真实姓名", Type.GetType("System.String"));
            DC3 DataColumn = new new DataColumn ( " partner name " , Type.GetType ( " System.String " ));
            DataColumn dc4 = new DataColumn("所在区域", Type.GetType("System.String"));
            DataColumn dc5 = new DataColumn("所属区域", Type.GetType("System.String"));
            DataColumn dc6 = new DataColumn("联系人", Type.GetType("System.String"));
            DataColumn dc7 = new DataColumn("家庭地址", Type.GetType("System.String"));
            DataColumn dc8 = new DataColumn("详细地址", Type.GetType("System.String"));
            DataColumn dc9 = new DataColumn("用户角色", Type.GetType("System.String"));
            DataColumn dc10 = new DataColumn("登录时间", Type.GetType("System.String"));
            DataColumn dc11 = new DataColumn("登录次数", Type.GetType("System.String"));
            dt.Columns.Add(dc1);
            dt.Columns.Add(dc2);
            dt.Columns.Add(dc3);
            dt.Columns.Add(dc4);
            dt.Columns.Add(dc5);
            dt.Columns.Add(dc6);
            dt.Columns.Add(dc7);
            dt.Columns.Add(dc8);
            dt.Columns.Add(dc9);
            dt.Columns.Add(dc10);
            dt.Columns.Add(dc11);

            foreach (User_Statistics model in list)
            {
                string[] arr = model.LoginDate.Split("".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
                string strArea = model.AgentProvince + ">" + model.AgentCity + ">" + model.AgentArea;
                string strArea1 = model.Province + "-" + model.City + "-" + model.Area;
                string[] strArr = strArea.Split('>');
                string[] strArr1 = strArea1.Split('-');
                string strAreaJoin = strArea.Length < 3 ? "未知" : strArea;
                string strAreaJoin1 = strArea1.Length < 3 ? "未知" : strArea1;

                string resultArea = String.Empty;
                string strProvince = model.AgentProvince;
                dict.TryGetValue(strProvince, out resultArea);

                DataRow dr = dt.NewRow();
                DR [ " Login User " ] = model.UserName;
                dr [ " real name " ] = String ? .IsNullOrEmpty (model.RealName) " Unknown " : model.RealName;
                dr [ " partner name " ] = model.AgentName;
                DR [ " Area " ] = strAreaJoin;
                DR [ " ordinary area " ] = String ? .IsNullOrEmpty (resultArea) " Unknown " : resultArea;
                DR [ " Contacts " ] = model.AgentContact;
                dr [ " home address " ] = strAreaJoin1;
                dr [ " Address " ] = String ? .IsNullOrEmpty (model.Address) " Unknown " : model.Address;
                dr["用户角色"] = (model.UserRole == null) || (model.UserRole == "0") || (model.UserRole == "") ? "未知" : Web.Helper.ViewHelper.GetUserRoleName(model.UserRole);
                DR [ " login time " ] = ARR [ 2 ] + " - " + ARR [ 0 ] + " - " + ARR [ . 1 ];
                DR [ " log number " ] model.LoginCount ?? = "" ;

                dt.Rows.Add(dr);
            }
            string selRoleName = userRole == "" ? "全部用户" : Web.Helper.ViewHelper.GetUserRoleName(userRole);
            string ExcelFileName = selRoleName + "-日志" + "-" + DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss") + ".xls";

            // Firefox 
            IF (the BrowserType == " Firefox " )
            {
                // attachment download operation 
                String contentType = " file application / X-XLS " ;
                 byte [] = byteArr new new Web.Helper.ExportExcelOprate () ExportExcelDT (dt).;
                FileContentResult fcResult = new FileContentResult(byteArr, contentType);
                fcResult.FileDownloadName = ExcelFileName;
                fcResult.ExecuteResult(this.ControllerContext);
            }
            // non-Firefox browsers 
            the else 
            { 
                // attachment downloads
                Response.ContentType = "application/x-xls";
                Response.ContentEncoding = System.Text.Encoding.GetEncoding ( " UTF-8 " );
                 String encodFileName = HttpUtility.UrlEncode (System.Text.Encoding.UTF8.GetBytes (ExcelFileName)); // solve Chinese name, the garbage problem
                Response.AppendHeader("Content-Disposition", "attachment;filename=" + encodFileName);
                Response.Write(System.Text.Encoding.UTF8.GetString(new Web.Helper.ExportExcelOprate().ExportExcelDT(dt)));
            }

 

ExportExcelOprate General Method class:

// Created: Liwei
     // Created: 2012/10/25 
    public  class ExportExcelOprate
    {
        ///  <the Summary> 
        /// Export Excel Datatable version
         ///  </ the Summary> 
        ///  <param name = "dt"> Export of Datatable </ param> 
        ///  <param name = "ExcelName"> Export EXCEL the name does not need to have an extension _xls </ param> 
        public  byte [] ExportExcelDT (the DataTable dt)
        {
            System.Text.StringBuilder sbStr = new System.Text.StringBuilder();

            string colHeaders = "", ls_item = "";
            The DataRow [] myRow = dt.Select (); // can similarly dt.Select ( "id> 10") in the form of data to achieve the purpose of screening 
            int I = 0 ;
             int Cl = dt.Columns.Count;
             // obtain the data table each column headings, t is divided between the headline, a column header added after the last carriage 
            sbStr.Append ( " <HTML> <head> <Meta HTTP-equiv = \" the Content-the Type \ "Content = \" text / html; charset = utf-8 \ "/> </ head> <body> <table border = 1> <tr style = \" color: Black; border: Gray 1px solid; text-align: center; \ "> " );
             for (I = 0 ; I <Cl; I ++ )
            {
                colHeaders += "<th>" + dt.Columns[i].Caption.ToString() + "</th>";
            }
            sbStr.Append (colheaders + " </ TR> " );
             // write data acquired information to the HTTP output stream
             // processed line data 
            the foreach (the DataRow Row in myRow)
            {
                // current line data is written to the HTTP output stream, and for downlink data blanking ls_item   
                ls_item = " <TR style = 'text-align = left: Center; Color: Black; font-size: 15px;'> " ;
                 for (I = 0 ; I <Cl; I ++ )
                {
                    IF (I == (Cl - . 1 )) // the last column, add n- 
                    {
                        ls_item += "<td>" + row[i].ToString() + "</td></tr>";
                    }
                    else
                    {
                        ls_item += "<td>" + row[i].ToString() + "</td>";
                    }
                }
                sbStr.Append(ls_item);
            }
            sbStr.Append("</table></body></html>");
            return System.Text.Encoding.UTF8.GetBytes(sbStr.ToString());
        }
    }

 

 

 

Reproduced in: https: //www.cnblogs.com/Kummy/archive/2013/04/03/2957243.html