简单的文件上传代码

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。");
    }
}