各种格式流文件下载

  

        private void btn_down3_Click(object sender, System.EventArgs e)
        {
            DownLoad("审查材料说明文档","CLSMLX","CLSM");
        }
        /**//// <summary>
        /// 下载流文件方法
        /// </summary>
        /// <param name="downName">另存为名称</param>
        /// <param name="downExten">后缀名</param> 
        /// <param name="downContent">内容</param>
        void DownLoad(string downName,string downExten,string downContent)
        {
            OracleDataReader dr = bcy.ShowDefByid(tablena,keyword,word);
            if(dr.Read())
            {
                Response.Clear();
                Response.ContentType="application/octet-stream";
                Response.AppendHeader("Connection","keep-alive");
                string sbcl = System.Web.HttpUtility.UrlEncode(System.Text.Encoding.UTF8.GetBytes(downName));
                Response.AppendHeader("Content-Disposition","attachment;filename="+sbcl+dr[downExten]);
                Response.BinaryWrite((byte[])dr[downContent]);
                Response.End();
            }
            dr.Close();
        }