Excel导出通用操作方式

后台导出数据，自己的总结导出经验，适合MVC项目：

遇到的问题是，火狐和非火狐的浏览器，我们必须要处理一下：

下图是火狐乱码问题：

            DataTable dt = new DataTable("用户登陆统计管理");

            DataColumn dc1 = new DataColumn("登录用户", Type.GetType("System.String"));

            DataColumn dc2 = new DataColumn("真实姓名", Type.GetType("System.String"));

            DataColumn dc3 = new DataColumn("合作商名字", 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["登录用户"] = model.UserName;

                dr["真实姓名"] = string.IsNullOrEmpty(model.RealName) ? "未知" : model.RealName;

                dr["合作商名字"] = model.AgentName;

                dr["所在区域"] = strAreaJoin;

                dr["所属区域"] = string.IsNullOrEmpty(resultArea) ? "未知" : resultArea;

                dr["联系人"] = model.AgentContact;

                dr["家庭地址"] = strAreaJoin1;

                dr["详细地址"] = string.IsNullOrEmpty(model.Address) ? "未知" : model.Address;

                dr["用户角色"] = (model.UserRole == null) || (model.UserRole == "0") || (model.UserRole == "") ? "未知" : Web.Helper.ViewHelper.GetUserRoleName(model.UserRole);

                dr["登录时间"] = arr[2] + "-" + arr[0] + "-" + arr[1];

                dr["登录次数"] = 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";



            //火狐浏览器

            if (browserType == "Firefox")

            {

                //附件下载操作

                string contentType = "application/x-xls";

                byte[] byteArr = new Web.Helper.ExportExcelOprate().ExportExcelDT(dt);

                FileContentResult fcResult = new FileContentResult(byteArr, contentType);

                fcResult.FileDownloadName = ExcelFileName;

                fcResult.ExecuteResult(this.ControllerContext);

            }

            //非火狐浏览器

            else

            {
                //附件下载

                Response.ContentType = "application/x-xls";

                Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");

                string encodFileName = HttpUtility.UrlEncode(System.Text.Encoding.UTF8.GetBytes(ExcelFileName));//解决中文名，乱码问题

                Response.AppendHeader("Content-Disposition", "attachment;filename=" + encodFileName);

                Response.Write(System.Text.Encoding.UTF8.GetString(new Web.Helper.ExportExcelOprate().ExportExcelDT(dt)));

            }

 

ExportExcelOprate类的通用方法：

//创建人：liwei

    //创建时间：2012/10/25

    public class ExportExcelOprate

    {

        /// <summary>

        /// 导出Excel Datatable版本

        /// </summary>

        /// <param name="dt">导出的Datatable</param>

        /// <param name="ExcelName">导出EXCEL的名称 不需要要带有扩展名_xls</param>

        public byte[] ExportExcelDT(DataTable dt)

        {

            System.Text.StringBuilder sbStr = new System.Text.StringBuilder();



            string colHeaders = "", ls_item = "";

            DataRow[] myRow = dt.Select();//可以类似dt.Select("id>10")之形式达到数据筛选目的

            int i = 0;

            int cl = dt.Columns.Count;

            //取得数据表各列标题，各标题之间以t分割，最后一个列标题后加回车符

            sbStr.Append("<html><head><meta http-equiv=\"Content-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>");

            //向HTTP输出流中写入取得的数据信息

            //逐行处理数据

            foreach (DataRow row in myRow)

            {

                //当前行数据写入HTTP输出流，并且置空ls_item以便下行数据  

                ls_item = "<tr style='text-align:center;Color:Black;font-size:15px;'>";

                for (i = 0; i < cl; i++)

                {

                    if (i == (cl - 1))//最后一列，加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());

        }

    }