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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();
}
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希望本文所述对大家的asp.net程序设计有所帮助。
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