[DataContract]
    public class Book
    {
        [DataMember]
        public int Code { get; set; }

        [DataMember]
        public string Title { get; set; }
    }

using System;
using System.Collections.Generic;
using System.Linq.Expressions;
using System.ServiceModel;

namespace WcfLambdaExpression
{
    [ServiceContract]
    public interface IBookService
    {
        [OperationContract]
        IEnumerable<Book> GetByExpression( Expression<Func<Book, bool>> expression );
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;

namespace WcfLambdaExpression
{    
    public class BookService : IBookService
    {        
        public BookService()
        {
            ListOfBook = new List<Book>();
        }

        public List<Book> ListOfBook 
        {
            get;
            private set;
        }

        public IEnumerable<Book> GetByExpression( Expression<Func<Book, bool>> expression )
        {
            ListOfBook.AddRange( new Book[] 
            {
                new Book(){Code = 1 , Title = "Book1"},
                new Book(){Code = 2 , Title = "Book2"},
                new Book(){Code = 3 , Title = "Book3"},
                new Book(){Code = 4 , Title = "Book4"},
                new Book(){Code = 5 , Title = "Book5"},
            } );

            return ListOfBook.AsQueryable().Where( expression );
        }       
    }
}

Type 'System.Linq.Expressions.Expression`1[System.Func`2[WcfLambdaExpression.Book,System.Boolean]]' cannot be serialized. 
Consider marking it with the DataContractAttribute attribute, and marking all of its members you want serialized with the DataMemberAttribute attribute.  
If the type is a collection, consider marking it with the CollectionDataContractAttribute.  
See the Microsoft .NET Framework documentation for other supported types

[ServiceContract]
    public interface IBookService
    {
        [OperationContract]
        IEnumerable<Book> GetByExpression( XElement expression );
    }

using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Xml.Linq;

namespace WcfLambdaExpression
{
    public class BookService : IBookService
    {
        public BookService()
        {
            ListOfBook = new List<Book>();
        }

        public List<Book> ListOfBook
        {
            get;
            private set;
        }

        public IEnumerable<Book> GetByExpression( XElement expression )
        {
            ListOfBook.AddRange( new Book[] 
            {
                new Book(){Code = 1 , Title = "Book1"},
                new Book(){Code = 2 , Title = "Book2"},
                new Book(){Code = 3 , Title = "Book3"},
                new Book(){Code = 4 , Title = "Book4"},
                new Book(){Code = 5 , Title = "Book5"},
            } );

             Common.ExpressionSerializer serializer = new Common.ExpressionSerializer();

            return ListOfBook.AsQueryable().Where( serializer.Deserialize( expression ) as Expression<Func<Book, bool>> );
        }
    }

public class AccessControlService
{
        private DbContext db;

        public AccessControlService()
        {
            db = new DbContext();
        }

        public IEnumerable<Permission> GetUserPermissions(string userId)
        {
            var userRoles = this.GetUserRoles(userId);
            var userPermissions = new List<Permission>();
            foreach (var userRole in userRoles)
            {
                foreach (var permission in userRole.Permissions)
                {
                    // prevent duplicates
                    if (!userPermissions.Contains(permission))
                        userPermissions.Add(permission);
                }
            }
            return userPermissions;
        }
        public IEnumerable<Role> GetUserRoles(string userId)
        {
            return db.Users.FirstOrDefault(x => x.UserId == userId).Roles.ToList();
        }

        public bool HasPermission(string userId, string area, string control)
        {
            var found = false;
            var userPermissions = this.GetUserPermissions(userId);
            var permission = userPermissions.FirstOrDefault(x => x.Area == area && x.Control == control);
            if (permission != null)
                found = true;
            return found;
        }
{

    [RoutePrefix("َAuth/permissions")]
    public class PermissionsController : ApiController
    {
        private AccessControlService _AccessControlService = null;
        public PermissionsController()
        {
            _AccessControlService = new AccessControlService();
        }

        [Route("GetUserPermissions")]
        public async Task<IHttpActionResult> GetUserPermissions()
        {
            if (!User.Identity.IsAuthenticated)
            {
                return Unauthorized();
            }
            return Ok(_AccessControlService.GetPermissions(User.Identity.GetCurrentUserId()));
        }        
    }

'use strict';
angular.module('App').factory('permissionService', ['$http', '$q', function ($http, $q) {

    var _getUserPermissions = function () {
        return $http.get(serviceBaseUrl + '/api/permissions/GetUserPermissions/');
    }

    var _isAuthorize = function (area, control) {
        return _.some($scope.permissions, { 'area': area, 'control': control });
    }

    return {
        getUserPermissions: _getUserPermissions,
        isAuthorize: _isAuthorize
    };
}]);

    $scope.login = function () {
        authService.login($scope.loginData).then(function (response) {
            savePermissions();
            $location.path('/userPanel');
        },
         function (err) {
             $scope.message = err.error_description;
         });
    };

    var savePermissions = function () {
        permissionService.getUserPermissions().then(function (response) {
            $rootScope.permissions = response.data;
        },
        function (err) {
        });
    }
}

<div ng-controller="childController">
    <div ng-if="isAuthorize('articles', 'edit')" >
    <!-- the block that we want to not see unauthorize person -->
    </div>
</div>

npx degit sveltejs/template my-svelte-project
cd my-svelte-project
npm install
npm run dev

• پنجره Server Explorer را باز کنید و مطمئن شوید که الگوی جداول و داده‌ها قابل رویت هستند.
• سیستم ASP.NET Identity با نسخه 4.5 دات نت فریم ورک و بالا‌تر سازگار است. پس نسخه فریم ورک پروژه را به آخرین نسخه (4.5.1) تغییر دهید.

پروژه را Build کنید تا مطمئن شوید هیچ خطایی وجود ندارد.

نصب پکیج‌های NuGet

• Microsoft.AspNet.Identity.Owin
• Microsoft.Owin.Host.SystemWeb
• Microsoft.Owin.Security.Facebook
• Microsoft.Owin.Security.Google
• Microsoft.Owin.Security.MicrosoftAccount
• Microsoft.Owin.Security.Twitter

مهاجرت دیتابیس فعلی به سیستم ASP.NET Identity

در پنجره کوئری باز شده، تمام محتویات فایل Migrations.sql را کپی کنید. سپس اسکریپت را با کلیک کردن دکمه Execute اجرا کنید.

ممکن است با اخطاری مواجه شوید مبنی بر آنکه امکان حذف (drop) بعضی از جداول وجود نداشت. دلیلش آن است که چهار عبارت اولیه در این اسکریپت، تمام جداول مربوط به Identity را در صورت وجود حذف می‌کنند. از آنجا که با اجرای اولیه این اسکریپت چنین جداولی وجود ندارند، می‌توانیم این خطاها را نادیده بگیریم. حال پنجره Server Explorer را تازه (refresh) کنید و خواهید دید که پنج جدول جدید ساخته شده اند.

لیست زیر نحوه Map کردن اطلاعات از جداول SQL Membership به سیستم Identity را نشان می‌دهد.

• aspnet_Roles --> AspNetRoles
• aspnet_Users, aspnet_Membership --> AspNetUsers
• aspnet_UsersInRoles --> AspNetUserRoles

ساختن مدل‌ها و صفحات عضویت

  public class User : IdentityUser
    {
        public User()
        {
            CreateDate = DateTime.Now;
            IsApproved = false;
            LastLoginDate = DateTime.Now;
            LastActivityDate = DateTime.Now;
            LastPasswordChangedDate = DateTime.Now;
            LastLockoutDate = DateTime.Parse("1/1/1754");
            FailedPasswordAnswerAttemptWindowStart = DateTime.Parse("1/1/1754");
            FailedPasswordAttemptWindowStart = DateTime.Parse("1/1/1754");
        }

        public System.Guid ApplicationId { get; set; }
        public string MobileAlias { get; set; }
        public bool IsAnonymous { get; set; }
        public System.DateTime LastActivityDate { get; set; }
        public string MobilePIN { get; set; }
        public string Email { get; set; }
        public string LoweredEmail { get; set; }
        public string LoweredUserName { get; set; }
        public string PasswordQuestion { get; set; }
        public string PasswordAnswer { get; set; }
        public bool IsApproved { get; set; }
        public bool IsLockedOut { get; set; }
        public System.DateTime CreateDate { get; set; }
        public System.DateTime LastLoginDate { get; set; }
        public System.DateTime LastPasswordChangedDate { get; set; }
        public System.DateTime LastLockoutDate { get; set; }
        public int FailedPasswordAttemptCount { get; set; }
        public System.DateTime FailedPasswordAttemptWindowStart { get; set; }
        public int FailedPasswordAnswerAttemptCount { get; set; }
        public System.DateTime FailedPasswordAnswerAttemptWindowStart { get; set; }
        public string Comment { get; set; }
    }

public class ApplicationDbContext : IdentityDbContext<User>
{
        
}

public class UserManager : UserManager<User>
{
        
}

public class SQLPasswordHasher : PasswordHasher
{
        public override string HashPassword(string password)
        {
            return base.HashPassword(password);
        }

        public override PasswordVerificationResult VerifyHashedPassword(string hashedPassword, string providedPassword)
        {
            string[] passwordProperties = hashedPassword.Split('|');
            if (passwordProperties.Length != 3)
            {
                return base.VerifyHashedPassword(hashedPassword, providedPassword);
            }
            else
            {
                string passwordHash = passwordProperties[0];
                int passwordformat = 1;
                string salt = passwordProperties[2];
                if (String.Equals(EncryptPassword(providedPassword, passwordformat, salt), passwordHash, StringComparison.CurrentCultureIgnoreCase))
                {
                    return PasswordVerificationResult.SuccessRehashNeeded;
                }
                else
                {
                    return PasswordVerificationResult.Failed;
                }
            }
        }

        //This is copied from the existing SQL providers and is provided only for back-compat.
        private string EncryptPassword(string pass, int passwordFormat, string salt)
        {
            if (passwordFormat == 0) // MembershipPasswordFormat.Clear
                return pass;

            byte[] bIn = Encoding.Unicode.GetBytes(pass);
            byte[] bSalt = Convert.FromBase64String(salt);
            byte[] bRet = null;

            if (passwordFormat == 1)
            { // MembershipPasswordFormat.Hashed 
                HashAlgorithm hm = HashAlgorithm.Create("SHA1");
                if (hm is KeyedHashAlgorithm)
                {
                    KeyedHashAlgorithm kha = (KeyedHashAlgorithm)hm;
                    if (kha.Key.Length == bSalt.Length)
                    {
                        kha.Key = bSalt;
                    }
                    else if (kha.Key.Length < bSalt.Length)
                    {
                        byte[] bKey = new byte[kha.Key.Length];
                        Buffer.BlockCopy(bSalt, 0, bKey, 0, bKey.Length);
                        kha.Key = bKey;
                    }
                    else
                    {
                        byte[] bKey = new byte[kha.Key.Length];
                        for (int iter = 0; iter < bKey.Length; )
                        {
                            int len = Math.Min(bSalt.Length, bKey.Length - iter);
                            Buffer.BlockCopy(bSalt, 0, bKey, iter, len);
                            iter += len;
                        }
                        kha.Key = bKey;
                    }
                    bRet = kha.ComputeHash(bIn);
                }
                else
                {
                    byte[] bAll = new byte[bSalt.Length + bIn.Length];
                    Buffer.BlockCopy(bSalt, 0, bAll, 0, bSalt.Length);
                    Buffer.BlockCopy(bIn, 0, bAll, bSalt.Length, bIn.Length);
                    bRet = hm.ComputeHash(bAll);
                }
            }

            return Convert.ToBase64String(bRet);
    }
}

public UserManager()
            : base(new UserStore<User>(new ApplicationDbContext()))
        {
            this.PasswordHasher = new SQLPasswordHasher();
 }

private Guid GetApplicationID()
{
    using (SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["ApplicationServices"].ConnectionString))
            {
                string queryString = "SELECT ApplicationId from aspnet_Applications WHERE ApplicationName = '/'"; //Set application name as in database

                SqlCommand command = new SqlCommand(queryString, connection);
                command.Connection.Open();

                var reader = command.ExecuteReader();
                while (reader.Read())
                {
                    return reader.GetGuid(0);
                }

            return Guid.NewGuid();
        }
}

var currentApplicationId = GetApplicationID();

User user = new User() { UserName = Username.Text,
ApplicationId=currentApplicationId, …};