winform 操作远程服务器指定的文件读写到本地问题

Question

winform数据库

Answer 1

 // logon types
        const int LOGON32_LOGON_INTERACTIVE = 2;
        const int LOGON32_LOGON_NETWORK = 3;
        const int LOGON32_LOGON_NEW_CREDENTIALS = 9;
        // logon providers
        const int LOGON32_PROVIDER_DEFAULT = 0;
        const int LOGON32_PROVIDER_WINNT50 = 3;
        const int LOGON32_PROVIDER_WINNT40 = 2;
        const int LOGON32_PROVIDER_WINNT35 = 1;        [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern int LogonUser(String lpszUserName,
            String lpszDomain,
            String lpszPassword,
            int dwLogonType,
            int dwLogonProvider,
            ref IntPtr phToken);        [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern int DuplicateToken(IntPtr hToken,
            int impersonationLevel,
            ref IntPtr hNewToken);        [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern bool RevertToSelf();        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public static extern bool CloseHandle(IntPtr handle);        private WindowsImpersonationContext impersonationContext;        public bool impersonateValidUser(String userName, String domain, String password)
        {
            WindowsIdentity tempWindowsIdentity;
            IntPtr token = IntPtr.Zero;
            IntPtr tokenDuplicate = IntPtr.Zero;            if (RevertToSelf())
            {
                // 这里使用LOGON32_LOGON_NEW_CREDENTIALS来访问远程资源。
                // 如果要（通过模拟用户获得权限）实现服务器程序，访问本地授权数据库可
                // 以用LOGON32_LOGON_INTERACTIVE
                if (LogonUser(userName, domain, password, LOGON32_LOGON_NEW_CREDENTIALS,
                    LOGON32_PROVIDER_DEFAULT, ref token) != 0)
                {
                    if (DuplicateToken(token, 2, ref tokenDuplicate) != 0)
                    {
                        tempWindowsIdentity = new WindowsIdentity(tokenDuplicate);
                        impersonationContext = tempWindowsIdentity.Impersonate();
                        if (impersonationContext != null)
                        {
                            System.AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal);
                            IPrincipal pr = System.Threading.Thread.CurrentPrincipal;
                            IIdentity id = pr.Identity;
                            CloseHandle(token);
                            CloseHandle(tokenDuplicate);
                            return true;
                        }
                    }
                }
            }            if (token != IntPtr.Zero)
                CloseHandle(token);            if (tokenDuplicate != IntPtr.Zero)
                CloseHandle(tokenDuplicate);            return false;
        }        public void undoImpersonation()
        {
            impersonationContext.Undo();
        }        public void TestFunc()
        {
            bool isImpersonated = false;
            try
            {
                if (impersonateValidUser("服务器登陆名", "Domain", "服务器密码"))
                {
                    isImpersonated = true;
                    FileStream fs = new FileStream(@"\服务器ip\emrdate\html\test.HTML", FileMode.OpenOrCreate, FileAccess.Read);
                    // FileStream fs = new FileStream(urlsip, FileMode.OpenOrCreate, FileAccess.Read);
                    Encoding encode = System.Text.Encoding.GetEncoding("GBK");
                    StreamReader myStreamReader = new StreamReader(fs, encode);
                    string strhtml = myStreamReader.ReadToEnd();
                    string stroutput = StripHTML(strhtml);-- StripHTML（）去标签方法
                    this.textBox1.Text = stroutput;
                }
            }
            finally
            {
                if (isImpersonated)
                    undoImpersonation();
            }
        }
从网上找这个方法稍作如上修改，就解决了我的问题。