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:
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/// <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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希望本文所述对大家的asp.net程序设计有所帮助。