asp.net下载文件时输出文件内容

<scriptlanguage="C#"runat="server">
protectedvoidPage_Load(objectsender,System.EventArgse)
{
Response.ContentType="application/x-shockwave-flash";
stringfileFlash=Server.MapPath("/")+"1.swf";
System.IO.FileStreamfileStream=newSystem.IO.FileStream(fileFlash,System.IO.FileMode.Open);
byte[]buffer=newbyte[fileStream.Length];
fileStream.Read(buffer,0,(int)fileStream.Length);
Response.BinaryWrite(buffer);
}
</script>