ASP.NET实现推送文件到浏览器的方法

本文实例讲述了ASP.NET实现推送文件到浏览器的方法。。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。