1 #region 引入dll 
  2 
  3 [StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)] 
  4  public struct INTERNET_CACHE_ENTRY_INFO 
  5 { 
  6 public int dwStructSize; 
  7 public IntPtr lpszSourceUrlName; 
  8 public IntPtr lpszLocalFileName; 
  9 public int CacheEntryType; 
 10 public int dwUseCount; 
 11 public int dwHitRate; 
 12 public int dwSizeLow; 
 13 public int dwSizeHigh; 
 14 public FILETIME LastModifiedTime; 
 15 public FILETIME ExpireTime; 
 16 public FILETIME LastAccessTime; 
 17 public FILETIME LastSyncTime; 
 18 public IntPtr lpHeaderInfo; 
 19 public int dwHeaderInfoSize; 
 20 public IntPtr lpszFileExtension; 
 21 public int dwExemptDelta; 
 22 } 
 23 
 24 [StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)] 
 25 public struct SYSTEMTIME 
 26 { 
 27 public short wYear; 
 28 public short wMonth; 
 29 public short wDayOfWeek; 
 30 public short wDay; 
 31 public short wHour; 
 32 public short wMinute; 
 33 public short wSecond; 
 34 public short wMilliseconds; 
 35 } 
 36 
 37 [DllImport("kernel32.dll",SetLastError=true, CharSet=CharSet.Auto)] 
 38 public static extern int FileTimeToSystemTime( 
 39 IntPtr lpFileTime, 
 40 IntPtr lpSystemTime); 
 41 
 42 [DllImport("wininet.dll", SetLastError=true, CharSet=CharSet.Auto)] 
 43 public static extern IntPtr FindFirstUrlCacheEntry( 
 44 [MarshalAs(UnmanagedType.LPTStr)] string lpszUrlSearchPattern, 
 45 IntPtr lpFirstCacheEntryInfo, 
 46 ref int lpdwFirstCacheEntryInfoBufferSize); 
 47 
 48 [DllImport("wininet.dll", SetLastError=true, CharSet=CharSet.Auto)] 
 49 public static extern bool FindNextUrlCacheEntry( 
 50 IntPtr hEnumHandle, 
 51 IntPtr lpNextCacheEntryInfo, 
 52 ref int lpdwNextCacheEntryInfoBufferSize); 
 53 
 54 [DllImport("wininet.dll")] 
 55 public static extern bool FindCloseUrlCache( 
 56 IntPtr hEnumHandle); 
 57 
 58 const int ERROR_NO_MORE_ITEMS = 259; 
 59 
 60 #endregion 
 61 
 62 #region FileTimeToSystemTime 
 63 
 64 private string FILETIMEtoDataTime(FILETIME time) 
 65 { 
 66 IntPtr filetime = Marshal.AllocHGlobal( Marshal.SizeOf(typeof(FILETIME)) ); 
 67 IntPtr systime = Marshal.AllocHGlobal( Marshal.SizeOf(typeof(SYSTEMTIME)) ); 
 68 Marshal.StructureToPtr(time,filetime,true); 
 69 FileTimeToSystemTime( filetime ,systime); 
 70 SYSTEMTIME st = (SYSTEMTIME) Marshal.PtrToStructure(systime,typeof(SYSTEMTIME)); 
 71 string Time = st.wYear.ToString()+"."+st.wMonth.ToString()+"."+st.wDay.ToString()+"."+st.wHour.ToString()+"."+st.wMinute.ToString()+"."+st.wSecond.ToString(); 
 72 return Time; 
 73 } 
 74 
 75 #endregion 
 76 
 77 #region 加载数据 
 78 private void FileOk_Click(object sender, System.EventArgs e) 
 79 { 
 80 
 81 int nNeeded = 0, nBufSize; 
 82 IntPtr buf; 
 83 INTERNET_CACHE_ENTRY_INFO CacheItem; 
 84 IntPtr hEnum; 
 85 bool r; 
 86 
 87 FindFirstUrlCacheEntry( null, IntPtr.Zero, ref nNeeded ); 
 88 
 89 if ( Marshal.GetLastWin32Error() == ERROR_NO_MORE_ITEMS ) 
 90 return; 
 91 
 92 nBufSize = nNeeded; 
 93 buf = Marshal.AllocHGlobal( nBufSize ); 
 94 hEnum = FindFirstUrlCacheEntry( null, buf, ref nNeeded ); 
 95 while ( true ) 
 96 { 
 97 CacheItem = (INTERNET_CACHE_ENTRY_INFO) Marshal.PtrToStructure( buf, 
 98 typeof(INTERNET_CACHE_ENTRY_INFO) ); 
 99 
100 string modifiedTime = FILETIMEtoDataTime(CacheItem.LastModifiedTime); 
101 string expireTime = FILETIMEtoDataTime(CacheItem.ExpireTime); 
102 string accessTime = FILETIMEtoDataTime(CacheItem.LastAccessTime); 
103 string syncTime = FILETIMEtoDataTime(CacheItem.LastSyncTime); 
104 
105 #region 获得数据，存入数据库 
106 try 
107 { 
108 
109 //此處遍歷CacheItem即可 
110 //例如 
111 string s = Marshal.PtrToStringAuto(CacheItem.lpszSourceUrlName); 
112 } 
113 catch 
114 { 
115 //異常處理 
116 } 
117 #endregion 
118 
119 string s = Marshal.PtrToStringAuto(CacheItem.lpszSourceUrlName); 
120 
121 nNeeded = nBufSize; 
122 r = FindNextUrlCacheEntry( hEnum, buf, ref nNeeded ); 
123 
124 if ( !r && Marshal.GetLastWin32Error() == ERROR_NO_MORE_ITEMS ) 
125 break; 
126 
127 if ( !r && nNeeded > nBufSize ) 
128 { 
129 nBufSize = nNeeded; 
130 buf = Marshal.ReAllocHGlobal( buf, (IntPtr) nBufSize ); 
131 FindNextUrlCacheEntry( hEnum, buf, ref nNeeded ); 
132 } 
133 } 
134 
135 MessageBox.Show("系统数据加载完毕！"); 
136 Marshal.FreeHGlobal( buf ); 
137 
138 } 
139 
140 #endregion