将数据导出成EXCEL格式

(1)gridview导出

 protected void Page_Load(object sender, EventArgs e)
        {
            GridViewBind("");
        }

        private void ToExcel(string FileType, string FileName)
        {
            Response.Charset = "utf-8";
            Response.ContentEncoding = System.Text.Encoding.UTF8;
            Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
            Response.ContentType = FileType;
            this.EnableViewState = false;
            StringWriter tw = new StringWriter();
            HtmlTextWriter hw = new HtmlTextWriter(tw);
            GridView1.RenderControl(hw);
            Response.Write(tw.ToString());
            Response.Flush();
            Response.End();
        }

        //页面加载
        public void GridViewBind(string str)
        {
            conn = new SqlConnection(@"server=.\;database=ktjx;uid=sa;pwd=118114");
            SqlCommand sd = new SqlCommand("select * from User_Info", conn);
            SqlDataAdapter sda = new SqlDataAdapter();
            sda.SelectCommand = sd;
            ds = new DataSet();
            sda.Fill(ds);
            GridView1.DataSource = ds;
            GridView1.DataBind();
            //List<Student> Items = new List<Student>();
            //for (int i = 0; i < 100; i++)
            //{
            //    Items.Add(new Student() { Id = 100 + i, Name = "Peter杨" + i });
            //}
            //GridView1.DataSource = Items;
            //GridView1.DataBind();
        }

        //实现GridView分页
        protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            GridView1.PageIndex = e.NewPageIndex;
            GridViewBind("");
        }


        public override void VerifyRenderingInServerForm(Control control)
        {
        }

        protected void bt_ExportExcel_Click(object sender, EventArgs e)
        {
            GridView1.AllowPaging = false;
            GridViewBind("");
            ToExcel("application/ms-excel", "用户表.xls");
            GridView1.AllowPaging = true;
            GridViewBind("");
            CreateExcelds(ds, "1", "用户名.xls");

        }

 这种方法不适用于List集合的绑定，导出来的只要是中文全是乱码！希望有大牛指点一二！

(2)List<>导出

        static List<Student> Items;
        protected void Page_Load(object sender, EventArgs e)
        {
            Bind();
        }

        private void Bind()
        {
            Items = new List<Student>();
            for (int i = 0; i < 100; i++)
            {
                Student Model = new Student() { Id = 100 + i, Name = "Peter杨" + i };
                Items.Add(Model);
            }
            GridView1.DataSource = Items.ToList();
            GridView1.DataBind();
        }

        protected void bt_ExportExcel_Click(object sender, EventArgs e)
        {
            CreateExcelList<Student>(Items, "用户表.xls");
        }

 /// <summary>
        /// 由List导出excel
        /// </summary>
        /// <param name="ds"></param>
        /// <param name="typeid"></param>
        /// <param name="FileName"></param>
        public void CreateExcelList<T>(List<T> Items, string FileName)
        {
            Type t = typeof(T);
            HttpResponse resp;
            resp = Page.Response;
            resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
            resp.AppendHeader("Content-Disposition", "attachment;filename=" + FileName);
            string colHeaders = "", ls_item = "";
            int i = 0;
            //取得数据表各列标题，各标题之间以 分割，最后一个列标题后加回车符
            for (i = 0; i < t.GetProperties().Count(); i++)
            {
                if (i != t.GetProperties().Count() - 1)
                {
                    colHeaders += t.GetProperties()[i].Name + "\t";
                }
                else
                {
                    colHeaders += t.GetProperties()[i].Name + "\n";
                }
            }
            //向HTTP输出流中写入取得的数据信息
            resp.Write(colHeaders);
            //逐行处理数据
            foreach (var item in Items)
            {
                var ps = t.GetProperties();
                for (int x = 0; x < ps.Count(); x++)
                {
                    if (x != t.GetProperties().Count() - 1)
                    {
                        ls_item += (ps[x].GetValue(item, null) ?? "").ToString() + "\t";
                    }
                    else
                    {
                        ls_item += (ps[x].GetValue(item, null) ?? "").ToString() + "\n";
                    }
                }

                //当前行数据写入HTTP输出流，并且置空ls_item以便下行数据
                resp.Write(ls_item);
                ls_item = "";
            }
            //写缓冲区中的数据到HTTP头文件中
            resp.End();
        }