怎么从服务器上下载文件的代码 ？

private void DownLoad(string path)
{
try
{
FileInfo DownloadFile = new FileInfo(path);
Response.Clear();
Response.ClearHeaders();
Response.Buffer = false;
Response.ContentType = "application/octet-stream";
Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(DownloadFile.FullName, System.Text.Encoding.UTF8) + ";charset=GB2312");
Response.AppendHeader("Content-Length", DownloadFile.Length.ToString());
Response.WriteFile(DownloadFile.FullName);
Response.Flush();
}
catch
{
//Response.Write(GlobalClass.ScriptAlert("下载文件失败！"));
}
}

FileName是文件名

public static void FileDownload(string FileName)
{
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