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  • ASP.NET实现推送文件到浏览器的方法

    这篇文章主要介绍了ASP.NET实现推送文件到浏览器的方法,可实现将文件推送到浏览器供用户浏览或下载的功能,需要的朋友可以参考下

    本文实例讲述了ASP.NET实现推送文件到浏览器的方法。分享给大家供大家参考。具体分析如下:

    这里主要实现从服务器到浏览器,推送文件,提供用户下载/浏览的功能。

    提示: 在AJAX UpdatePanel里面将无效。如果代码从按钮单击事件中被调用,该按钮需要在 AJAX UpdatePanel的外部。

    /// <summary>
    /// Downloads (pushes) file to the client browser.
    /// **** NOTE **** Cannot be done from inside an AJAX UpdatePanel control.
    /// </summary>
    /// <param name="fullFilePath">The full file path of the file</param>
    protected void DownloadFile(string fullFilePath)
    {
      // Gets the File Name
      string fileName = fullFilePath.Substring(fullFilePath.LastIndexOf('\') + 1);
      byte[] buffer;
      using (FileStream fileStream = new FileStream(fullFilePath, FileMode.Open))
      {
        int fileSize = (int)fileStream.Length;
        buffer = new byte[fileSize];
        // Read file into buffer
        fileStream.Read(buffer, 0, (int)fileSize);
      }
      Response.Clear();
      Response.Buffer = true;
      Response.BufferOutput = true;
      Response.ContentType = "application/x-download";
      Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName);
      Response.CacheControl = "public";
      // writes buffer to OutputStream
      Response.OutputStream.Write(buffer, 0, buffer.Length);
      Response.End();
    }
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  • 原文地址:https://www.cnblogs.com/sjqq/p/6476416.html
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