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。
具体代码如下:
- /// <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();
- }
希望本文所述对大家的asp.net程序设计有所帮助。
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