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string ext= Path.GetExtension(path);
Response.HeaderEncoding = System.Text.Encoding.GetEncoding("GBK");
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Length", file.FileSize.ToString());
Response.AddHeader("Content-Disposition", "attachment;filename=中文.txt");
Response.AppendHeader("Content-Disposition", "attachment;filename=" + Server.UrlPathEncode(DownloadFile.Name));
protected void Button3_Click(object sender, EventArgs e)
{
string fileName = "aaa.txt";//客户端保存的文件名
string filePath = Server.MapPath("DownLoad/aaa.txt");//路径
System.IO.FileInfo fileInfo = new System.IO.FileInfo(filePath);
if (fileInfo.Exists == true)
{
const long ChunkSize = 102400;//100K 每次读取文件,只读取100K,这样可以缓解服务器的压力
byte[] buffer = new byte[ChunkSize];
Response.Clear();
System.IO.FileStream iStream = System.IO.File.OpenRead(filePath);
long dataLengthToRead = iStream.Length;//获取下载的文件总大小
Response.ContentType = "application/octet-stream";
switch (Request.Browser.Browser)
{
case "Firefox": Response.AddHeader("Content-Disposition", "attachment;filename=\"" + fileName + "\""); break;
case "AppleMAC-Safari": Response.AddHeader("Content-Disposition", "attachment;filename=\"" + fileName + "\""); break;
case "IE": Response.AddHeader("Content-Disposition", "attachment;filename=" + ReplaceEtension(ToHexString(fileName))); break;
default: Response.AddHeader("Content-Disposition", "attachment;filename=" + ReplaceEtension(ToHexString(fileName))); break;
}
while (dataLengthToRead > 0 && Response.IsClientConnected)
{
int lengthRead = iStream.Read(buffer, 0, Convert.ToInt32(ChunkSize));//读取的大小
Response.OutputStream.Write(buffer, 0, lengthRead);
Response.Flush();
dataLengthToRead = dataLengthToRead - lengthRead;
}
Response.Close();
}
}