C#.NET：清除WebBrowser控件緩存文件

一、頁面禁止緩存標簽(HTML)：

<head>
    <meta http-equiv="PRAGMA" content="NO-CACHE" />
    <meta http-equiv="CACHE-CONTROL" content="NO-CACHE" />
    <meta http-equiv="EXPIRES" content="0" />
    <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8" />
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

二、URL后添加時間戳(JavaScript)：

url += url.indexOf("?") > 0 ? "&" : "?";
url += "random=" + (new Date()).getTime();

三、URL后添加時間戳(C#)：

url += url.IndexOf("?") > 0 ? "&" : "?";
url += "random=" + DateTime.Now.ToString("yyyyMMddHHmmss");

四、調用ClearMyTracksByProcess(C#)：

/// <summary>
        /// 清除文件夾
        /// </summary>
        /// <param name="path">文件夾路徑</param>
        static void FolderClear(string path)
        {
            System.IO.DirectoryInfo diPath = new System.IO.DirectoryInfo(path);
            foreach (System.IO.FileInfo fiCurrFile in diPath.GetFiles())
            {
                FileDelete(fiCurrFile.FullName);

            }
            foreach (System.IO.DirectoryInfo diSubFolder in diPath.GetDirectories())
            {
                FolderClear(diSubFolder.FullName); // Call recursively for all subfolders
            }
        }
        /// <summary>
        /// 執行命令行
        /// </summary>
        /// <param name="cmd"></param>
        static void RunCmd(string cmd)
        {
            ProcessStartInfo p = new ProcessStartInfo();
            p.FileName = "cmd.exe";
            p.Arguments = "/c " + cmd;
            p.WindowStyle = ProcessWindowStyle.Hidden;  // Use a hidden window
            Process.Start(p);
        }
        /// <summary>
        /// 刪除臨時文件
        /// </summary>
        public static void CleanTempFiles()
        {
            FolderClear(Environment.GetFolderPath(Environment.SpecialFolder.InternetCache));
            RunCmd("RunDll32.exe InetCpl.cpl,ClearMyTracksByProcess 8");
        }

此上四法組合起來使用，可有效清除頁面緩存。