求winform删除cookie代码

zlcp520 2012-06-11 04:25:36
网上找了用了都没效果
有个用api的有效果但是程序启动只能只想执行一次删除操作?不知道怎么回事.




using System;

using System.Runtime.InteropServices;



namespace MyWinFormNs

{

    /// <summary>删除电脑浏览器缓存和cookie  你妈妈的只能执行一次?</summary>

    public class DeleteCache

    {

        [StructLayout(LayoutKind.Explicit, Size = 80)]

        struct INTERNET_CACHE_ENTRY_INFOA

        {

            [FieldOffset(0)]

            public uint dwStructSize;

            [FieldOffset(4)]

            public IntPtr lpszSourceUrlName;

            [FieldOffset(8)]

            public IntPtr lpszLocalFileName;

            [FieldOffset(12)]

            public uint CacheEntryType;

            [FieldOffset(16)]

            public uint dwUseCount;

            [FieldOffset(20)]

            public uint dwHitRate;

            [FieldOffset(24)]

            public uint dwSizeLow;

            [FieldOffset(28)]

            public uint dwSizeHigh;

            [FieldOffset(32)]

            public FILETIME LastModifiedTime;

            [FieldOffset(40)]

            public FILETIME ExpireTime;

            [FieldOffset(48)]

            public FILETIME LastAccessTime;

            [FieldOffset(56)]

            public FILETIME LastSyncTime;

            [FieldOffset(64)]

            public IntPtr lpHeaderInfo;

            [FieldOffset(68)]

            public uint dwHeaderInfoSize;

            [FieldOffset(72)]

            public IntPtr lpszFileExtension;

            [FieldOffset(76)]

            public uint dwReserved;

            [FieldOffset(76)]

            public uint dwExemptDelta;

        }



        #region api



        [DllImport(@"wininet",

            SetLastError = true,

            CharSet = CharSet.Auto,

            EntryPoint = "FindFirstUrlCacheGroup",

            CallingConvention = CallingConvention.StdCall)]

        public static extern IntPtr FindFirstUrlCacheGroup(

            int dwFlags,

            int dwFilter,

            IntPtr lpSearchCondition,

            int dwSearchCondition,

            ref long lpGroupId,

            IntPtr lpReserved);



        [DllImport(@"wininet",

            SetLastError = true,

            CharSet = CharSet.Auto,

            EntryPoint = "FindNextUrlCacheGroup",

            CallingConvention = CallingConvention.StdCall)]

        public static extern bool FindNextUrlCacheGroup(

            IntPtr hFind,

            ref long lpGroupId,

            IntPtr lpReserved);



        [DllImport(@"wininet",

            SetLastError = true,

            CharSet = CharSet.Auto,

            EntryPoint = "DeleteUrlCacheGroup",

            CallingConvention = CallingConvention.StdCall)]

        public static extern bool DeleteUrlCacheGroup(

            long GroupId,

            int dwFlags,

            IntPtr lpReserved);



        [DllImport(@"wininet",

            SetLastError = true,

            CharSet = CharSet.Auto,

            EntryPoint = "FindFirstUrlCacheEntryA",

            CallingConvention = CallingConvention.StdCall)]

        public static extern IntPtr FindFirstUrlCacheEntry(

            [MarshalAs(UnmanagedType.LPTStr)] string lpszUrlSearchPattern,

            IntPtr lpFirstCacheEntryInfo,

            ref int lpdwFirstCacheEntryInfoBufferSize);



        [DllImport(@"wininet",

            SetLastError = true,

            CharSet = CharSet.Auto,

            EntryPoint = "FindNextUrlCacheEntryA",

            CallingConvention = CallingConvention.StdCall)]

        public static extern bool FindNextUrlCacheEntry(

            IntPtr hFind,

            IntPtr lpNextCacheEntryInfo,

            ref int lpdwNextCacheEntryInfoBufferSize);



        [DllImport(@"wininet",

            SetLastError = true,

            CharSet = CharSet.Auto,

            EntryPoint = "DeleteUrlCacheEntryA",

            CallingConvention = CallingConvention.StdCall)]

        public static extern bool DeleteUrlCacheEntry(

            IntPtr lpszUrlName);



        #endregion



        /// <summary>无参构造函数-直接运行</summary>

        public DeleteCache()

        {



        }



        /// <summary>删除电脑浏览器缓存和cookie</summary>

        public void faDeleteCache()

        {

            // Indicates that all of the cache groups in the user's system should be enumerated

            const int CACHEGROUP_SEARCH_ALL = 0x0;

            // Indicates that all the cache entries that are associated with the cache group

            // should be deleted, unless the entry belongs to another cache group.

            const int CACHEGROUP_FLAG_FLUSHURL_ONDELETE = 0x2;

            // File not found.

            const int ERROR_FILE_NOT_FOUND = 0x2;

            // No more items have been found.

            const int ERROR_NO_MORE_ITEMS = 259;

            // Pointer to a GROUPID variable

            long groupId = 0;



            // Local variables

            int cacheEntryInfoBufferSizeInitial = 0;

            int cacheEntryInfoBufferSize = 0;

            IntPtr cacheEntryInfoBuffer = IntPtr.Zero;

            INTERNET_CACHE_ENTRY_INFOA internetCacheEntry;

            IntPtr enumHandle = IntPtr.Zero;

            bool returnValue = false;



            // Delete the groups first.

            // Groups may not always exist on the system.

            // For more information, visit the following Microsoft Web site:

            // http://msdn.microsoft.com/library/?url=/workshop/networking/wininet/overview/cache.asp			

            // By default, a URL does not belong to any group. Therefore, that cache may become

            // empty even when the CacheGroup APIs are not used because the existing URL does not belong to any group.			

            enumHandle = FindFirstUrlCacheGroup(0, CACHEGROUP_SEARCH_ALL, IntPtr.Zero, 0, ref groupId, IntPtr.Zero);

            // If there are no items in the Cache, you are finished.

            if (enumHandle != IntPtr.Zero && ERROR_NO_MORE_ITEMS == Marshal.GetLastWin32Error()) return;



            // Loop through Cache Group, and then delete entries.

            while (true)

            {

                // Delete a particular Cache Group.

                returnValue = DeleteUrlCacheGroup(groupId, CACHEGROUP_FLAG_FLUSHURL_ONDELETE, IntPtr.Zero);

                if (!returnValue && ERROR_FILE_NOT_FOUND == Marshal.GetLastWin32Error())

                {

                    returnValue = FindNextUrlCacheGroup(enumHandle, ref groupId, IntPtr.Zero);

                }



                if (!returnValue && (ERROR_NO_MORE_ITEMS == Marshal.GetLastWin32Error() || ERROR_FILE_NOT_FOUND == Marshal.GetLastWin32Error()))

                    break;

            }



            // Start to delete URLs that do not belong to any group.

            enumHandle = FindFirstUrlCacheEntry(null, IntPtr.Zero, ref cacheEntryInfoBufferSizeInitial);

            if (enumHandle == IntPtr.Zero && ERROR_NO_MORE_ITEMS == Marshal.GetLastWin32Error())

                return;



            cacheEntryInfoBufferSize = cacheEntryInfoBufferSizeInitial;

            cacheEntryInfoBuffer = Marshal.AllocHGlobal(cacheEntryInfoBufferSize);

            enumHandle = FindFirstUrlCacheEntry(null, cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);



            while (true)

            {

                internetCacheEntry = (INTERNET_CACHE_ENTRY_INFOA)Marshal.PtrToStructure(cacheEntryInfoBuffer, typeof(INTERNET_CACHE_ENTRY_INFOA));



                cacheEntryInfoBufferSizeInitial = cacheEntryInfoBufferSize;

                returnValue = DeleteUrlCacheEntry(internetCacheEntry.lpszSourceUrlName);

                if (!returnValue)

                {

                    returnValue = FindNextUrlCacheEntry(enumHandle, cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);

                }

                if (!returnValue && ERROR_NO_MORE_ITEMS == Marshal.GetLastWin32Error())

                {

                    break;

                }

                if (!returnValue && cacheEntryInfoBufferSizeInitial > cacheEntryInfoBufferSize)

                {

                    cacheEntryInfoBufferSize = cacheEntryInfoBufferSizeInitial;

                    cacheEntryInfoBuffer = Marshal.ReAllocHGlobal(cacheEntryInfoBuffer, (IntPtr)cacheEntryInfoBufferSize);

                    returnValue = FindNextUrlCacheEntry(enumHandle, cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);

                }

            }

            Marshal.FreeHGlobal(cacheEntryInfoBuffer);

        }

    }

}
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zlcp520 2012-06-11
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[Quote=引用 7 楼 的回复:]
不是cache，是cookie
删除cookies目录下的文件就可以，使用System.IO.File.Delete()
[/Quote]

不能即时删除cookie 我试过了

我是用webBrowser1登录百度,删除cookie,temporary目录内文件,任然没有登出百度.
而使用上面api方式删除cache和cookie,可以马上登出百度.但是只能调用一次,在次调用api窗体程序就没有响应.


threenewbee 2012-06-11
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不是cache，是cookie
删除cookies目录下的文件就可以，使用System.IO.File.Delete()
zlcp520 2012-06-11
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[Quote=引用 5 楼 的回复:]
引用 4 楼 的回复:
引用 2 楼 的回复:
http://www.vckbase.com/document/viewdoc/?id=280

看这个


不懂vc啊

你那函数声明都有了，就看看他的DeleteUrlCache函数对着改改应该就可以了
[/Quote]

api的代码我有,上面帖了.不知道为什么只能执行一次.能帮看看吗
cnfixit 2012-06-11
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[Quote=引用 4 楼 的回复:]
引用 2 楼 的回复:
http://www.vckbase.com/document/viewdoc/?id=280

看这个


不懂vc啊
[/Quote]
你那函数声明都有了，就看看他的DeleteUrlCache函数对着改改应该就可以了
zlcp520 2012-06-11
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[Quote=引用 2 楼 的回复:]
http://www.vckbase.com/document/viewdoc/?id=280

看这个
[/Quote]

不懂vc啊
zlcp520 2012-06-11
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[Quote=引用 1 楼 的回复:]
你把要清除的地方直接调用这个方法不就可以了？
[/Quote]

说了只能用有次,在调用程序就没有响应了
cnfixit 2012-06-11
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http://www.vckbase.com/document/viewdoc/?id=280

看这个
Kobayashi 2012-06-11
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你把要清除的地方直接调用这个方法不就可以了？
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