c# webBrowser清除缓存问题

1.webBrowser的浏览器为ie。

2.通过清除ie缓存即可。

3.代码调用如下：

public enum ShowCommands : int
    {

        SW_HIDE = 0,

        SW_SHOWNORMAL = 1,

        SW_NORMAL = 1,

        SW_SHOWMINIMIZED = 2,

        SW_SHOWMAXIMIZED = 3,

        SW_MAXIMIZE = 3,

        SW_SHOWNOACTIVATE = 4,

        SW_SHOW = 5,

        SW_MINIMIZE = 6,

        SW_SHOWMINNOACTIVE = 7,

        SW_SHOWNA = 8,

        SW_RESTORE = 9,

        SW_SHOWDEFAULT = 10,

        SW_FORCEMINIMIZE = 11,

        SW_MAX = 11

    }

[DllImport("shell32.dll")]
        static extern IntPtr ShellExecute(IntPtr hwnd, string lpOperation, string lpFile, string lpParameters, string lpDirectory, ShowCommands nShowCmd);


ShellExecute(IntPtr.Zero, "open", "rundll32.exe", " InetCpl.cpl,ClearMyTracksByProcess 8", "", ShowCommands.SW_HIDE);

其中ClearMyTracksByProcess 可进行选择设置 ：
Temporary Internet Files  （Internet临时文件）
ClearMyTracksByProcess 8
Cookies
ClearMyTracksByProcess 2
History (历史记录)
ClearMyTracksByProcess 1
 Form. Data （表单数据）
ClearMyTracksByProcess 16
 Passwords (密码）
ClearMyTracksByProcess 32
 Delete All  （全部删除）
ClearMyTracksByProcess 255