高分请教,C#怎么用代码清楚IE的临时文件!!!在线等待!!!!

Question

用C#代码清楚掉C:\Documents and Settings\Administrator\Local Settings\Temporary Internet Files文件夹下的所有东西,普通的IO操作肯定是不行的,例如: string [] file= Directory.GetFiles("路径");然后把file到的文件delete掉，这方法不行,所以请教各位高手用API也好，用其他方法也好,能删掉就可以.在线等..........

Answer 1

两种方法，推荐接口方式。
using System.Runtime.InteropServices;[StructLayout(LayoutKind.Sequential)]
public class INTERNET_CACHE_ENTRY_INFOW
{
    public uint dwStructSize;
    public string lpszSourceUrlName;
    public string lpszLocalFileName;
    public uint CacheEntryType;
    public uint dwUseCount;
    public uint dwHitRate;
    public uint dwSizeLow;
    public uint dwSizeHigh;
    public FILETIME LastModifiedTime;
    public FILETIME ExpireTime;
    public FILETIME LastAccessTime;
    public FILETIME LastSyncTime;
    public IntPtr lpHeaderInfo;
    public uint dwHeaderInfoSize;
    public string lpszFileExtension;
    public uint dwReserved; //union uint dwExemptDelta;
}[DllImport("wininet.dll")]
public static extern IntPtr FindFirstUrlCacheEntryEx(  string lpszUrlSearchPattern,
  uint dwFlags,
  uint dwFilter,
  Int64 GroupId,
  IntPtr lpFirstCacheEntryInfo,
  ref uint lpdwFirstCacheEntryInfoBufferSize,
  Pointer lpGroupAttributes,
  Pointer pcbGroupAttributes,
  Pointer lpReserved
);[DllImport("wininet.dll")]
public static extern bool FindCloseUrlCache(IntPtr hEnumHandle);[DllImport("wininet.dll")]
public static extern bool FindNextUrlCacheEntryEx(
    IntPtr hEnumHandle,
    IntPtr lpFirstCacheEntryInfo,
    ref uint lpdwFirstCacheEntryInfoBufferSize,
    Pointer lpGroupAttributes,
    Pointer pcbGroupAttributes,
    Pointer lpReserved);public uint NORMAL_CACHE_ENTRY = 0x00000001;private void button1_Click(object sender, EventArgs e)
{
    IntPtr vHandle;
    INTERNET_CACHE_ENTRY_INFOW vInternetCacheEntryInfo = new INTERNET_CACHE_ENTRY_INFOW();
    uint vFirstCacheEntryInfoBufferSize = 0;
    FindFirstUrlCacheEntryEx(null, 0, NORMAL_CACHE_ENTRY, 0, (IntPtr)null,
        ref vFirstCacheEntryInfoBufferSize, null, null, null);
    IntPtr vBuffer = Marshal.AllocHGlobal((int)vFirstCacheEntryInfoBufferSize);
    vHandle = FindFirstUrlCacheEntryEx(null, 0, NORMAL_CACHE_ENTRY, 0,
       vBuffer, ref vFirstCacheEntryInfoBufferSize,
       null, null, null);
    while (vHandle != null)
    {
        Marshal.PtrToStructure(vBuffer, vInternetCacheEntryInfo);
        richTextBox1.AppendText(vInternetCacheEntryInfo.lpszSourceUrlName + "\r\n");
        Marshal.FreeCoTaskMem(vBuffer);        FindNextUrlCacheEntryEx(vHandle, (IntPtr)null, ref vFirstCacheEntryInfoBufferSize,
          null, null, null);
        vBuffer = Marshal.AllocHGlobal((int)vFirstCacheEntryInfoBufferSize);
        if (!FindNextUrlCacheEntryEx(vHandle, vBuffer,
           ref vFirstCacheEntryInfoBufferSize, null, null, null)) break;
    }
    Marshal.FreeCoTaskMem(vBuffer);
}//-------接口方式-------
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;namespace IEHistory
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }        private void button1_Click(object sender, EventArgs e)
        {
            IUrlHistoryStg2 vUrlHistoryStg2 = (IUrlHistoryStg2)new UrlHistory();
            IEnumSTATURL vEnumSTATURL = vUrlHistoryStg2.EnumUrls();
            STATURL vSTATURL;
            uint vFectched;
            while (vEnumSTATURL.Next(1, out vSTATURL, out vFectched) == 0)
            {
                richTextBox1.AppendText(string.Format("{0}:{1}\r\n", 
                    vSTATURL.pwcsTitle, vSTATURL.pwcsUrl));
            }
            //vUrlHistoryStg2.ClearHistory();//清除历史
        }
    }    struct STATURL
    {
        public static uint SIZEOF_STATURL =
            (uint)Marshal.SizeOf(typeof(STATURL));        public uint cbSize;
        [MarshalAs(UnmanagedType.LPWStr)]
        public string pwcsUrl;
        [MarshalAs(UnmanagedType.LPWStr)]
        public string pwcsTitle;
        public FILETIME ftLastVisited,
            ftLastUpdated,
            ftExpires;
        public uint dwFlags;
    }    [ComImport, Guid("3C374A42-BAE4-11CF-BF7D-00AA006946EE"), 
        InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    interface IEnumSTATURL
    {
        [PreserveSig]
        uint Next(uint celt, out STATURL rgelt, out uint pceltFetched);
        void Skip(uint celt);
        void Reset();
        void Clone(out IEnumSTATURL ppenum);
        void SetFilter(
            [MarshalAs(UnmanagedType.LPWStr)] string poszFilter,
            uint dwFlags);
    }    [ComImport, Guid("AFA0DC11-C313-11d0-831A-00C04FD5AE38"),
        InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    interface IUrlHistoryStg2
    {
        #region IUrlHistoryStg methods
        void AddUrl(
            [MarshalAs(UnmanagedType.LPWStr)] string pocsUrl,
            [MarshalAs(UnmanagedType.LPWStr)] string pocsTitle,
            uint dwFlags);        void DeleteUrl(
            [MarshalAs(UnmanagedType.LPWStr)] string pocsUrl,
            uint dwFlags);        void QueryUrl(
            [MarshalAs(UnmanagedType.LPWStr)] string pocsUrl,
            uint dwFlags,
            ref STATURL lpSTATURL);        void BindToObject(
            [MarshalAs(UnmanagedType.LPWStr)] string pocsUrl,
            ref Guid riid,
            [MarshalAs(UnmanagedType.IUnknown)] out object ppvOut);        IEnumSTATURL EnumUrls();
        #endregion        void AddUrlAndNotify(
            [MarshalAs(UnmanagedType.LPWStr)] string pocsUrl,
            [MarshalAs(UnmanagedType.LPWStr)] string pocsTitle,
            uint dwFlags,
            [MarshalAs(UnmanagedType.Bool)] bool fWriteHistory,
            [MarshalAs(UnmanagedType.IUnknown)] object /*IOleCommandTarget*/
            poctNotify,
            [MarshalAs(UnmanagedType.IUnknown)] object punkISFolder);        void ClearHistory();
    }    [ComImport, Guid("3C374A40-BAE4-11CF-BF7D-00AA006946EE")]
    class UrlHistory /* : IUrlHistoryStg[2] */ { }
}