c# - 文件流下载-自定义工具

  //需要文件字节流、带后缀的文件名，mine类型
public static void exportFile(byte[] data, string fileName, string mine)
        {
            HttpContext.Current.Response.Clear();
            HttpContext.Current.Response.Charset = "utf-8";
            HttpContext.Current.Response.AddHeader("content-disposition",
                "attachment;  filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
            HttpContext.Current.Response.ContentType = mine;
            HttpContext.Current.Response.BinaryWrite(data);
            HttpContext.Current.Response.Flush();
            HttpContext.Current.Response.End();
        }