C#把DataTable导出到Excel(中文)

/// <summary>
        /// 把DataTable内容导出excel并返回客户端
　　　　/// </summary>
　　　　/// <param name="dgData">待导出的DataTable</param>
        public static void ExportExcel(System.Data.DataTable dtData) {
            System.Web.UI.WebControls.DataGrid dgExport = null;
            // 当前对话
            System.Web.HttpContext curContext = System.Web.HttpContext.Current;
            // IO用于导出并返回excel文件
            System.IO.StringWriter strWriter = null;
            System.Web.UI.HtmlTextWriter htmlWriter = null;

            if (dtData != null) {
                // 设置编码和附件格式
                //curContext.Response.ContentType = "application/vnd.ms-excel";
                //curContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
                //curContext.Response.Charset = "";

                curContext.Response.Charset = "utf-8";
                curContext.Response.AppendHeader("Content-Disposition", "attachment;filename=ganbuxinxi.xls");
                curContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
                curContext.Response.ContentType = "application/ms-excel"; 
                // 导出excel文件
                strWriter = new System.IO.StringWriter();
                htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);

                // 为了解决dgData中可能进行了分页的情况，需要重新定义一个无分页的DataGrid
                dgExport = new System.Web.UI.WebControls.DataGrid();
                dgExport.DataSource = dtData.DefaultView;
                dgExport.AllowPaging = false;
                dgExport.DataBind();

                // 返回客户端
                dgExport.RenderControl(htmlWriter);
                curContext.Response.Write(strWriter.ToString());
                curContext.Response.End();
            }
        }