//导出到Excel --- 全部导出，可以设置一些隐藏进行导出

protected void btnExport_Click(object sender, EventArgs e)

    {

        div_table.InnerHtml = hfdHtml.Value;//将页面内容重新放回去，因为后台按钮会冲掉已经生成的页面

        btnExport.Visible = false;//导出按钮设置为不可见

        string strFileName = DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls";

        System.Web.HttpContext.Current.Response.Clear();

        System.Web.HttpContext.Current.Response.ClearHeaders();

        System.Web.HttpContext.Current.Response.Buffer = false;

        System.Web.HttpContext.Current.Response.ContentType = "application/octet-stream";

        System.Web.HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + strFileName);

    }

//导出word操作，本实例可以导出html样式

protected void btnExport_Click(object sender, EventArgs e)    {        divAdd.Visible = false;//需要隐藏的div        string strFileName = DateTime.Now.ToString("yyyyMMddHHmmss") + ".doc";        Response.Buffer = true;        System.Web.HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + strFileName);        Response.ContentType = "application/ms-word";        HttpContext.Current.Response.Charset = "UTF-8";        this.EnableViewState = false;//初始化HtmlWriter        System.IO.StringWriter writer = new System.IO.StringWriter();        System.Web.UI.HtmlTextWriter htmlWriter = new System.Web.UI.HtmlTextWriter(writer);        this.RenderControl(htmlWriter);//输出        HttpContext.Current.Response.Write(writer.ToString());         HttpContext.Current.Response.End();    }

另外在前台要加上  ValidateRequest="false" EnableEventValidation="false"

注意：在导出时，出现图片不能显示，记得要改为绝对路径