public static bool LoginShareFolder(string desPath, string userName = "******", string password = "")
        {
            if (desPath.IsEmptyOrWhileSpace())
            {
                throw new ArgumentException("指定路径错误", "desPath");
            }

            NetResource nr;

            nr.dwDisplayType = ResourceDisplayType.RESOURCEDISPLAYTYPE_GENERIC;
            nr.dwScope       = ResourceEnumerationScope.RESOURCE_GLOBALNET;
            nr.dwType        = ResourceType.RESOURCETYPE_DISK;
            nr.dwUsage       = ResourceUsage.RESOURCEUSAGE_CONNECTABLE;
            nr.lpComment     = " ";
            nr.lpLocalName   = "z: ";
            nr.lpProvider    = " ";
            nr.lpRemoteName  = desPath;

            var retCode = CopyFileByNet.WNetAddConnection2(ref nr, password, userName,
                                                           ConnectionOption.CONNECT_INTERACTIVE);

            if (retCode == WNetAddConnection2ReturnCode.NO_ERROR)
            {
                return(true);
            }
            else
            {
                throw new Exception(@"登录错误,错误代码为:" + retCode);
            }
        }
 public static bool LogoutShareFolder(string shareFolderPath)
 {
     if (CopyFileByNet.WNetCancelConnection2(shareFolderPath, 0, true) == WNetCancelConnection2ReturnCode.NO_ERROR)
     {
         return(true);
     }
     else
     {
         return(false);
     }
 }