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const string _RegSubFix = @"/.[/w]+$";const string _RegZip = @"/.zip|/.rar";protected void btnUpload_Click(object sender, EventArgs e){    if (filUpload.HasFile)    {        string subfix = Regex.Match(filUpload.FileName, _RegSubFix).Value.ToLower();        if (filUpload.PostedFile.ContentType == "application/octet-stream"            && !Regex.IsMatch(filUpload.FileName, _RegZip))        {            WebManageShell.WebHelp.Alert(this.Page, "不受支持的文件格式。");            return;        }        string folder = ConfigurationManager.AppSettings["UploadPath"] + "//" + DateTime.Now.ToString("yyyyMM");        try        {            if (!Directory.Exists(folder))            {                Directory.CreateDirectory(folder);            }            string file = folder + "//" + DateTime.Now.ToFileTimeUtc().ToString() + subfix; filUpload.SaveAs(file); WebManageShell.WebHelp.Alert(this.Page, "文件上传成功。");        }        catch        {            WebManageShell.WebHelp.Alert(this.Page, "文件上传失败。");        }    }    else    {        WebManageShell.WebHelp.Alert(this.Page, "你没有上传文件。");    }}

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