System.Web.HttpResponse.BinaryWrite C# (CSharp) Method

		public void BinaryWrite (byte [] buffer)
		{
			output_stream.Write (buffer, 0, buffer.Length);
		}

 /// <summary>
 /// 发送PDF文件回浏览器端
 /// </summary>
 /// <param name="fileName"></param>
 /// <param name="ms"></param>
 /// <param name="encoding"></param>
 public static void SendFile(string fileName, MemoryStream ms, Encoding encoding = null)
 {
     fileName = (fileName + "").Replace(" ", "");
     encoding = encoding ?? Encoding.UTF8;
     if (ms != null && !string.IsNullOrEmpty(fileName))
     {
         System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
         response.Clear();
         response.Charset = encoding.BodyName;// "utf-8";
         if (!HttpContext.Current.Request.UserAgent.Contains("Firefox") && !HttpContext.Current.Request.UserAgent.Contains("Chrome"))
         {
             fileName = HttpUtility.UrlEncode(fileName, encoding);
         }
         response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
         //为了解决打开，导出NPOI生成的xlsx文件时，提示发现不可读取内容。
         if (!(fileName + "").ToLower().EndsWith(".xlsx"))
         {
             response.AddHeader("Content-Type", "application/octet-stream");
             response.BinaryWrite(ms.GetBuffer());
         }
         else
         {
             response.BinaryWrite(ms.ToArray());
         }
         ms.Close();
         ms = null;
         response.Flush();
         response.End();
     }
 }