我想点击一个buttom,下载网站中其中一个指定文件,要如何实现?各位有什么高见,谢谢.在线等待.谢谢
------解决方案--------------------------------------------------------
string filename = "a.txt ";
if (filename != " ")
{
string path = Server.MapPath(filename);
System.IO.FileInfo file = new System.IO.FileInfo(path);
if (file.Exists)
{
Response.Clear();
Response.AddHeader( "Content-Disposition ", "attachment; filename= " + file.Name);
Response.AddHeader( "Content-Length ", file.Length.ToString());
Response.ContentType = "application/octet-stream ";
Response.Filter.Close();
Response.WriteFile(file.FullName);
Response.End();
}
else
{
Response.Write( "This file does not exist. ");
}
}