private string _name;
        public string Name
        {
            get { return _name; }
            set
            {
                _name = value;
                OnPropertyChanged("Name");
            }
        }
        public event PropertyChangedEventHandler PropertyChanged;

        private void OnPropertyChanged(string property)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(property));
            }
        }

  public partial class MainWindow : Window
    {
        private Person person;
        public MainWindow()
        {
            InitializeComponent();
            person = Person.GetPerson();
            DataContext = person;

        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            person.Name = "Leonardo Decaperio";
        }  
    }

 private string _name;
        public string Name
        {
            get { return _name; }
            set
            {
                _name = value;
                OnPropertyChanged();
            }
        } 

  private void OnPropertyChanged([CallerMemberName] string property="")
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(property));
            }
        }

OnPropertyChanged();

public class User
{
    public int Id { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string UserName { get; set; }


    public static List<User> GetUsers()
    {
        return new List<User>()
        {
            new()
            {
                Id = 1,
                FirstName = "علی",
                LastName = "یگانه مقدم",
                UserName = "yeganehaym"
            },
            new ()
            {
                Id = 2,
                FirstName = "وحید",
                LastName = "نصیری",
                UserName = "VahidN"
            },
        };
    }
}

[ApiController]
[Route("/api/[controller]/{id?}")]
public class UserController : ControllerBase
{

    [HttpGet]
    public User GetUser(int id)
    {
        var users = Users.User.GetUsers();
        var user = users.FirstOrDefault(x => x.Id == id);
        return user;
    }
}

public class Product
{
    public int Id { get; set; }
    public string Name { get; set; }
    public int Price { get; set; }
    public  int Quantity { get; set; }


    public static List<Product> GetProducts()
    {
        return new List<Product>()
        {
            new()
            {
                Id = 1,
                Name = "LCD",
                Price = 20000,
                Quantity = 10
            },
            new()
            {
                Id = 1,
                Name = "Mouse",
                Price = 320000,
                Quantity = 15
            },
            new()
            {
                Id = 1,
                Name = "Keyboard",
                Price = 50000,
                Quantity = 25
            },
        };
    }
}

[ApiController]
[Route("api/[controller]")]
public class ProductController : ControllerBase
{

    [HttpGet]
    public List<Product> GetProducts()
    {
        return Product.GetProducts();
    }

}

{
    "Routes":[
        
        {
        "DownstreamPathTemplate":"/api/User/{id}",
        "DownstreamScheme":"https",
        "DownstreamHostAndPorts":[
            {
                "Host":"localhost",
                "Port":"7279"
            }
        ],
        "UpstreamPathTemplate":"/GetUser/{id}",
        "UpstreamHttpMethod":[
            "GET"
        ]},
        {
        "DownstreamPathTemplate":"/api/Product",
        "DownstreamScheme":"https",
        "DownstreamHostAndPorts":[
            {
                "Host":"localhost",
                "Port":"7261"
            }
        ],
     
        "UpstreamPathTemplate":"/Products",
        "UpstreamHttpMethod":[
            "GET"
        ]
        }
    ]
    
   
}

builder.Services.AddOcelot();

app.UseOcelot();

builder.Configuration.SetBasePath(builder.Environment.ContentRootPath)    
    .AddJsonFile("ocelot.json", optional: false, reloadOnChange: true);

builder.Configuration.SetBasePath(builder.Environment.ContentRootPath)    
    .AddJsonFile("ocelot.json", optional: false, reloadOnChange: true)
    .AddJsonFile($"ocelot.{builder.Environment.EnvironmentName}.json", optional: false, reloadOnChange: true);

Install-Package Ocelot.Cache.CacheManager

builder.Services.AddOcelot()
    .AddCacheManager(x => x.WithDictionaryHandle());

"FileCacheOptions":{
      "TtlSeconds":30,
       "Region":"custom"
}

{
    "Routes":[
        
        {
        "DownstreamPathTemplate":"/api/User/{id}",
        "DownstreamScheme":"https",
        "DownstreamHostAndPorts":[
            {
                "Host":"localhost",
                "Port":"7279"
            }
        ],
        "UpstreamPathTemplate":"/GetUser/{id}",
        "UpstreamHttpMethod":[
            "GET"
        ]
        },
        {
        "DownstreamPathTemplate":"/api/Product",
        "DownstreamScheme":"https",
        "DownstreamHostAndPorts":[
            {
                "Host":"localhost",
                "Port":"7261"
            }
        ],
     
        "UpstreamPathTemplate":"/Products",
        "UpstreamHttpMethod":[
            "GET"
        ],
            "FileCacheOptions":{
                "TtlSeconds":30,
                "Region":"custom"
            }
        }
    ]
    
   
}

       "RateLimitOptions":{
                "ClientWhitelist":[
                ],
                "EnableRateLimiting":true,
                "Period":"5s",
                "PeriodTimespan":1,
                "Limit":1,
                "HttpStatusCode":429
            }

{
    "Routes":[
        
        {
        "DownstreamPathTemplate":"/api/User/{id}",
        "DownstreamScheme":"https",
        "DownstreamHostAndPorts":[
            {
                "Host":"localhost",
                "Port":"7279"
            }
        ],
        "UpstreamPathTemplate":"/GetUser/{id}",
        "UpstreamHttpMethod":[
            "GET"
        ],
        "FileCacheOptions":{
            "TtlSeconds":30,
            "Region":"custom"
        }
        },
        {
        "DownstreamPathTemplate":"/api/Product",
        "DownstreamScheme":"https",
        "DownstreamHostAndPorts":[
            {
                "Host":"localhost",
                "Port":"7261"
            }
        ],
     
        "UpstreamPathTemplate":"/Products",
        "UpstreamHttpMethod":[
            "GET"
        ],
            "RateLimitOptions":{
                "ClientWhitelist":[
                ],
                "EnableRateLimiting":true,
                "Period":"5s",
                "PeriodTimespan":1,
                "Limit":1,
                "HttpStatusCode":429
            }
        }
    ],
    "DangerousAcceptAnyServerCertificateValidator": true
    
   
}

UPDATE AdventureWorksDW2008R2.dbo.DimCustomer
    SET AddressLine1 = stgDimCustomerUpdates.AddressLine1
    , AddressLine2 = stgDimCustomerUpdates.AddressLine2
    , BirthDate = stgDimCustomerUpdates.BirthDate
    , CommuteDistance = stgDimCustomerUpdates.CommuteDistance
    , DateFirstPurchase = stgDimCustomerUpdates.DateFirstPurchase
    , EmailAddress = stgDimCustomerUpdates.EmailAddress
    , EnglishEducation = stgDimCustomerUpdates.EnglishEducation
    , EnglishOccupation = stgDimCustomerUpdates.EnglishOccupation
    , FirstName = stgDimCustomerUpdates.FirstName
    , Gender = stgDimCustomerUpdates.Gender
    , GeographyKey = stgDimCustomerUpdates.GeographyKey
    , HouseOwnerFlag = stgDimCustomerUpdates.HouseOwnerFlag
    , LastName = stgDimCustomerUpdates.LastName
    , MaritalStatus = stgDimCustomerUpdates.MaritalStatus
    , MiddleName = stgDimCustomerUpdates.MiddleName
    , NumberCarsOwned = stgDimCustomerUpdates.NumberCarsOwned
    , NumberChildrenAtHome = stgDimCustomerUpdates.NumberChildrenAtHome
    , Phone = stgDimCustomerUpdates.Phone
    , Suffix = stgDimCustomerUpdates.Suffix
    , Title = stgDimCustomerUpdates.Title
    , TotalChildren = stgDimCustomerUpdates.TotalChildren
FROM AdventureWorksDW2008.dbo.DimCustomer DimCustomer
  INNER JOIN dbo.stgDimCustomerUpdates ON
DimCustomer.CustomerAlternateKey = stgDimCustomerUpdates.CustomerAlternateKey

MERGE dbo.FactSalesQuota AS T
USING SSIS_PDS.dbo.stgFactSalesQuota AS S
ON T.EmployeeKey = S.EmployeeKey
AND T.DateKey = S.DateKey
WHEN MATCHED AND BY target
THEN INSERT(EmployeeKey, DateKey, CalendarYear, CalendarQuarter, SalesAmountQuota)
VALUES(S.EmployeeKey, S.DateKey, S.CalendarYear, S.CalendarQuarter, S.SalesAmountQuota)
WHEN MATCHED AND T.SalesAmountQuota != S.SalesAmountQuota
THEN UPDATE SET T.SalesAmountQuota = S.SalesAmountQuota
;

public class Comment
{
    public int Id { get; set; }
    public string CommentText { get; set; }
    public string User { get; set; }
    
    public virtual ICollection<ArticleComment> ArticleComments { get; set; }
    public virtual ICollection<VideoComment> VideoComments { get; set; }
    public virtual ICollection<EventComment> EventComments { get; set; }
}

public class Article
{
    public Article()
    {
        ArticleComments = new HashSet<ArticleComment>();
    }
    
    public int Id { get; set; }
    public string Title { get; set; }
    public string Slug { get; set; }
    public string Description { get; set; }
    
    public virtual ICollection<ArticleComment> ArticleComments { get; set; }

}

public class Video
{
    public Video()
    {
        VideoComments = new HashSet<VideoComment>();
    }
    
    public int Id { get; set; }
    public string Url { get; set; }
    public string Description { get; set; }
    
    public virtual ICollection<VideoComment> VideoComments { get; set; }
}

public class Event
{
    public Event()
    {
        EventComments = new HashSet<EventComment>();
    }
    
    public int Id { get; set; }
    public string Name { get; set; }
    public DateTimeOffset? Start { get; set; }
    public DateTimeOffset? End { get; set; }
    
    public virtual ICollection<EventComment> EventComments { get; set; }
}

public class MyDbContext : DbContext
{
    public DbSet<Article> Articles { get; set; }
    public DbSet<ArticleComment> ArticleComments { get; set; }
    public DbSet<Video> Videos { get; set; }
    public DbSet<VideoComment> VideoComments { get; set; }
    public DbSet<Event> Events { get; set; }
    public DbSet<EventComment> EventComments { get; set; }
    public DbSet<Comment> Comments { get; set; }

    protected override void OnConfiguring(DbContextOptionsBuilder options)
        => options.UseSqlite("Data Source=polymorphic.db");

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<ArticleComment>(entity =>
        {
            entity.HasKey(e => new { e.CommentId, e.ArticleId })
                .HasName("PK_dbo.ArticleComments");

            entity.HasIndex(e => e.ArticleId)
                .HasName("IX_ArticleId");

            entity.HasIndex(e => e.CommentId)
                .HasName("IX_ArticleCommentId");

            entity.HasOne(d => d.Article)
                .WithMany(p => p.ArticleComments)
                .HasForeignKey(d => d.ArticleId)
                .HasConstraintName("FK_dbo.ArticleComments_dbo.Articles_ArticleId");

            entity.HasOne(d => d.Comment)
                .WithMany(p => p.ArticleComments)
                .HasForeignKey(d => d.CommentId)
                .HasConstraintName("FK_dbo.ArticleComments_dbo.Comments_CommentId");
        });
        
        modelBuilder.Entity<VideoComment>(entity =>
        {
            entity.HasKey(e => new { e.CommentId, e.VideoId })
                .HasName("PK_dbo.VideoComments");

            entity.HasIndex(e => e.VideoId)
                .HasName("IX_VideoId");

            entity.HasIndex(e => e.CommentId)
                .HasName("IX_VideoCommentId");

            entity.HasOne(d => d.Video)
                .WithMany(p => p.VideoComments)
                .HasForeignKey(d => d.VideoId)
                .HasConstraintName("FK_dbo.VideoComments_dbo.Videos_VideoId");

            entity.HasOne(d => d.Comment)
                .WithMany(p => p.VideoComments)
                .HasForeignKey(d => d.CommentId)
                .HasConstraintName("FK_dbo.VideoComments_dbo.Comments_CommentId");
        });
        
        modelBuilder.Entity<EventComment>(entity =>
        {
            entity.HasKey(e => new { e.CommentId, e.EventId })
                .HasName("PK_dbo.EventComments");

            entity.HasIndex(e => e.EventId)
                .HasName("IX_EventId");

            entity.HasIndex(e => e.CommentId)
                .HasName("IX_EventCommentId");

            entity.HasOne(d => d.Event)
                .WithMany(p => p.EventComments)
                .HasForeignKey(d => d.EventId)
                .HasConstraintName("FK_dbo.EventComments_dbo.Events_EventId");

            entity.HasOne(d => d.Comment)
                .WithMany(p => p.EventComments)
                .HasForeignKey(d => d.CommentId)
                .HasConstraintName("FK_dbo.EventComments_dbo.Comments_CommentId");
        });
    }
}

   //ViewModels

    public class CustomListItem
    {
        public int Id { get; set; }
        public string Text { get; set; }
    }

    public class ProductAddGetViewModel
    {
        public IEnumerable<CustomListItem> Categories { get; set; }
        public IEnumerable<CustomListItem> Groups { get; set; }
    }

    public class ProductAddViewModel
    {
        public string Name { get; set; }
        public bool IsActive { get; set; }

        public int CategoryId { get; set; }
        public int GroupId { get; set; }
    }

    public class ProductEditGetViewModel
    {
        public int Id { get; set; }
        public string Name { get; set; }

        public IEnumerable<CustomListItem> Categories { get; set; }
        public IEnumerable<CustomListItem> Groups { get; set; }
    }

    public class ProductEditViewModel
    {
        public int Id { get; set; }
        public string Name { get; set; }

        public int CategoryId { get; set; }
        public int GroupId { get; set; }
    }

using System;
using System.Collections.Generic;
namespace ChapterOneProject
{
public class Patient
    {
        public Patient()
        {
            Visits = new List<Visit>();
        }

        public int Id { get; set; }
        public string Name { get; set; }
        public DateTime BirthDate { get; set; }
        //[ForeignKey("AnimalTypeId")]
        
        public AnimalType AnimalType { get; set; }
        //public int AnimalTypeId { get; set; }

        public DateTime FirstVisit { get; set; }
        public List<Visit> Visits { get; set; }
    }

public class Visit
    {
        [Key]
        public int Id { get; set; }
        public DateTime Date { get; set; }
        public String ReasonForVisit { get; set; }
        public String Outcome { get; set; }
        public Decimal Weight { get; set; }

        //[ForeignKey("PatientId")]
        //public virtual Patient Patient { get; set; }
        public int PatientId { get; set; }
    }

public class AnimalType
    {
        public int Id { get; set; }
        public string TypeName { get; set; }
    }
}

public class VetContext : DbContext
    {
        public DbSet<Patient> Patients { get; set; }
        public DbSet<Visit> Visits { get; set; }
        //public DbSet<AnimalType> AnimalTypes { get; set; }
    }

var dog = new AnimalType { TypeName = "Dog" };
            var visit = new List<Visit>
                            {
                                new Visit
                                    {
                                        Date = new DateTime(2011, 9, 1),
                                        Outcome = "Test",
                                        ReasonForVisit = "Test",
                                        Weight = 32,
                                    }
                            };
            var patient = new Patient
                              {
                                  Name = "Sampson",
                                  BirthDate = new DateTime(2008, 1, 28),
                                  AnimalType = dog,
                                  Visits = visit,
                              };
            using (var context = new VetContext())
            {
                context.Patients.Add(patient);
                context.SaveChanges();
            }

namespace DynamicSearch.Model
{
    public class Person
    {
        public Person(string name, string family, string fatherName)
        {
            Name = name;
            Family = family;
            FatherName = fatherName;
        }

        public string Name { get; set; }
        public string Family { get; set; }
        public string FatherName { get; set; }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DynamicSearch.Model
{
    public class Teacher : Person
    {
        public Teacher(int id, string name, string family, string fatherName)
            : base(name, family, fatherName)
        {
            ID = id;
        }

        public int ID { get; set; }

        public override string ToString()
        {
            return string.Format("Name: {0}, Family: {1}", Name, Family);
        }
    }
}

namespace DynamicSearch.Model
{
    public class Student : Person
    {
        public Student(int stdId, Teacher teacher, string name, string family, string fatherName)
            : base(name, family, fatherName)
        {
            StdID = stdId;
            Teacher = teacher;
        }

        public int StdID { get; set; }
        public Teacher Teacher { get; set; }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using DynamicSearch.Model;

namespace DynamicSearch.Service
{
    public class StudentService
    {
        public IList<Student> GetStudents()
        {
            return new List<Student>
                {
                    new Student(1,new Teacher(1,"Ali","Rajabi","Reza"),"Mohammad","Hoeyni","Sadegh"),
                    new Student(2,new Teacher(2,"Hasan","Noori","Mohsen"),"Omid","Razavi","Ahmad"),
                };
        }
    }
}

using System;
using System.Linq.Expressions;

namespace DynamicSearch.ViewModel.Base
{
    public class AndOr
    {
        public AndOr(string name, string title,Func<Expression,Expression,Expression> func)
        {
            Title = title;
            Func = func;
            Name = name;
        }

        public string Title { get; set; }
        public Func<Expression, Expression, Expression> Func { get; set; }
        public string Name { get; set; }
    }
}

using System;

namespace DynamicSearch.ViewModel.Base
{
    public class Feild : IEquatable<Feild>
    {
        public Feild(string title, Type type, string name)
        {
            Title = title;
            Type = type;
            Name = name;
        }

        public Type Type { get; set; }
        public string Name { get; set; }
        public string Title { get; set; }
        public bool Equals(Feild other)
        {
            return other.Title == Title;
        }
    }
}

using System;
using System.Linq.Expressions;

namespace DynamicSearch.ViewModel.Base
{
    public class Operator
    {
        public enum TypesToApply
        {
            String,
            Numeric,
            Both
        }

        public Operator(string title, Func<Expression, Expression, Expression> func, TypesToApply typeToApply)
        {
            Title = title;
            Func = func;
            TypeToApply = typeToApply;
        }

        public string Title { get; set; }
        public Func<Expression, Expression, Expression> Func { get; set; }
        public TypesToApply TypeToApply { get; set; }
    }
}

using System.Collections.ObjectModel;
using System.Linq;
using System.Linq.Expressions;

namespace DynamicSearch.ViewModel.Base
{
    public abstract class SearchFilterBase<T> : BaseViewModel
    {
        protected SearchFilterBase()
        {
            var containOp = new Operator("شامل باشد", (expression, expression1) => Expression.Call(expression, typeof(string).GetMethod("Contains"), expression1), Operator.TypesToApply.String);
            var notContainOp = new Operator("شامل نباشد", (expression, expression1) =>
            {
                var contain = Expression.Call(expression, typeof(string).GetMethod("Contains"), expression1);
                return Expression.Not(contain);
            }, Operator.TypesToApply.String);
            var equalOp = new Operator("=", Expression.Equal, Operator.TypesToApply.Both);
            var notEqualOp = new Operator("<>", Expression.NotEqual, Operator.TypesToApply.Both);
            var lessThanOp = new Operator("<", Expression.LessThan, Operator.TypesToApply.Numeric);
            var greaterThanOp = new Operator(">", Expression.GreaterThan, Operator.TypesToApply.Numeric);
            var lessThanOrEqual = new Operator("<=", Expression.LessThanOrEqual, Operator.TypesToApply.Numeric);
            var greaterThanOrEqual = new Operator(">=", Expression.GreaterThanOrEqual, Operator.TypesToApply.Numeric);

            Operators = new ObservableCollection<Operator>
                {
                      equalOp, 
                      notEqualOp,
                      containOp,
                      notContainOp,
                      lessThanOp,
                      greaterThanOp,
                      lessThanOrEqual,
                      greaterThanOrEqual,
                };


            SelectedAndOr = AndOrs.FirstOrDefault(a => a.Name == "Suppress");
            SelectedFeild = Feilds.FirstOrDefault();
            SelectedOperator = Operators.FirstOrDefault(a => a.Title == "=");
        }

        public abstract IQueryable<T> GetQuarable();

        public virtual ObservableCollection<AndOr> AndOrs
        {
            get
            {
                return new ObservableCollection<AndOr>
                    {
                        new AndOr("And","و", Expression.AndAlso), 
                        new AndOr("Or","یا",Expression.OrElse),
                        new AndOr("Suppress","نادیده",(expression, expression1) => expression),
                    };
            }
        }
        public virtual ObservableCollection<Operator> Operators
        {
            get { return _operators; }
            set { _operators = value; NotifyPropertyChanged("Operators"); }
        }
        public abstract ObservableCollection<Feild> Feilds { get; }

        public bool IsOtherFilters
        {
            get { return _isOtherFilters; }
            set { _isOtherFilters = value; }
        }
        public string SearchValue
        {
            get { return _searchValue; }
            set { _searchValue = value; NotifyPropertyChanged("SearchValue"); }
        }
        public AndOr SelectedAndOr
        {
            get { return _selectedAndOr; }
            set { _selectedAndOr = value; NotifyPropertyChanged("SelectedAndOr"); NotifyPropertyChanged("SelectedFeildHasSetted"); }
        }
        public Operator SelectedOperator
        {
            get { return _selectedOperator; }
            set { _selectedOperator = value; NotifyPropertyChanged("SelectedOperator"); }
        }
        public Feild SelectedFeild
        {
            get { return _selectedFeild; }
            set
            {
                Operators = value.Type == typeof(string) ? new ObservableCollection<Operator>(Operators.Where(a => a.TypeToApply == Operator.TypesToApply.Both || a.TypeToApply == Operator.TypesToApply.String)) : new ObservableCollection<Operator>(Operators.Where(a => a.TypeToApply == Operator.TypesToApply.Both || a.TypeToApply == Operator.TypesToApply.Numeric));
                if (SelectedOperator == null)
                {
                    SelectedOperator = Operators.FirstOrDefault(a => a.Title == "=");
                }

                NotifyPropertyChanged("SelectedOperator");
                NotifyPropertyChanged("SelectedFeild");
                _selectedFeild = value;
                NotifyPropertyChanged("SelectedFeildHasSetted");
            }
        }
        public bool SelectedFeildHasSetted
        {
            get
            {
                return SelectedFeild != null &&
                       (SelectedAndOr.Name != "Suppress" || !IsOtherFilters);
            }
        }

        private ObservableCollection<Operator> _operators;
        private Feild _selectedFeild;
        private Operator _selectedOperator;
        private AndOr _selectedAndOr;
        private string _searchValue;
        private bool _isOtherFilters = true;
    }
}

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

namespace DynamicSearch.ViewModel.Base
{
  public static  class ExpressionExtensions
    {
        public static List<T> CreateQuery<T>(Expression whereCallExpression, IQueryable entities)
        {
            return entities.Provider.CreateQuery<T>(whereCallExpression).ToList();
        }

        public static MethodCallExpression CreateWhereCall<T>(Expression condition, ParameterExpression pe, IQueryable entities)
        {
            var whereCallExpression = Expression.Call(
                typeof(Queryable),
                "Where",
                new[] { entities.ElementType },
                entities.Expression,
                Expression.Lambda<Func<T, bool>>(condition, new[] { pe }));
            return whereCallExpression;
        }

        public static void CreateLeftAndRightExpression<T>(string propertyName, Type type, string searchValue, ParameterExpression pe, out Expression left, out Expression right)
        {
            var typeOfNullable = type;
            typeOfNullable = typeOfNullable.IsNullableType() ? typeOfNullable.GetTypeOfNullable() : typeOfNullable;
            left = null;

            var typeMethodInfos = typeOfNullable.GetMethods();
            var parseMethodInfo = typeMethodInfos.FirstOrDefault(a => a.Name == "Parse" && a.GetParameters().Count() == 1);

            var propertyInfos = typeof(T).GetProperties();
            if (propertyName.Contains("."))
            {
                left = CreateComplexTypeExpression(propertyName, propertyInfos, pe);
            }
            else
            {
                var propertyInfo = propertyInfos.FirstOrDefault(a => a.Name == propertyName);
                if (propertyInfo != null) left = Expression.Property(pe, propertyInfo);
            }

            if (left != null) left = Expression.Convert(left, typeOfNullable);

            if (parseMethodInfo != null)
            {
                var invoke = parseMethodInfo.Invoke(searchValue, new object[] { searchValue });
                right = Expression.Constant(invoke, typeOfNullable);
            }
            else
            {
                //type is string
                right = Expression.Constant(searchValue.ToLower());
                var methods = typeof(string).GetMethods();
                var firstOrDefault = methods.FirstOrDefault(a => a.Name == "ToLower" && !a.GetParameters().Any());
                if (firstOrDefault != null) left = Expression.Call(left, firstOrDefault);
            }
        }

        public static Expression CreateComplexTypeExpression(string searchFilter, IEnumerable<PropertyInfo> propertyInfos, Expression pe)
        {
            Expression ex = null;
            var infos = searchFilter.Split('.');
            var enumerable = propertyInfos.ToList();
            for (var index = 0; index < infos.Length - 1; index++)
            {
                var propertyInfo = infos[index];
                var nextPropertyInfo = infos[index + 1];
                if (propertyInfos == null) continue;
                var propertyInfo2 = enumerable.FirstOrDefault(a => a.Name == propertyInfo);
                if (propertyInfo2 == null) continue;
                var val = Expression.Property(pe, propertyInfo2);
                var propertyInfos3 = propertyInfo2.PropertyType.GetProperties();
                var propertyInfo3 = propertyInfos3.FirstOrDefault(a => a.Name == nextPropertyInfo);
                if (propertyInfo3 != null) ex = Expression.Property(val, propertyInfo3);
            }

            return ex;
        }

        public static Expression AddOperatorExpression(Func<Expression, Expression, Expression> func, Expression left, Expression right)
        {
            return func.Invoke(left, right);
        }

        public static Expression JoinExpressions(bool isFirst, Func<Expression, Expression, Expression> func, Expression expression, Expression ex)
        {
            if (!isFirst)
            {
                return func.Invoke(expression, ex);
            }

            expression = ex;
            return expression;
        }
    }
}

using System.Collections.ObjectModel;
using System.Linq;
using DynamicSearch.Model;
using DynamicSearch.Service;
using DynamicSearch.ViewModel.Base;

namespace DynamicSearch.ViewModel
{
    public class StudentSearchFilter : SearchFilterBase<Student>
    {
        public override ObservableCollection<Feild> Feilds
        {
            get
            {
                return new ObservableCollection<Feild>
                    {
                        new Feild("نام دانش آموز",typeof(string),"Name"), 
                         new Feild("نام خانوادگی دانش آموز",typeof(string),"Family"),
                        new Feild("نام خانوادگی معلم",typeof(string),"Teacher.Name"),
                        new Feild("شماره دانش آموزی",typeof(int),"StdID"),
                    };
            }
        }

        public override IQueryable<Student> GetQuarable()
        {
            return new StudentService().GetStudents().AsQueryable();
        }
    }
}

<Window x:Class="DynamicSearch.View.MainWindow"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:viewModel="clr-namespace:DynamicSearch.ViewModel;assembly=DynamicSearch.ViewModel"
        xmlns:view="clr-namespace:DynamicSearch.View"
        mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
    <Window.Resources>
        <viewModel:StudentSearchViewModel x:Key="StudentSearchViewModel" />
        <view:VisibilityConverter x:Key="VisibilityConverter" />
    </Window.Resources>
    <Grid   DataContext="{StaticResource StudentSearchViewModel}">
        <WrapPanel Orientation="Vertical">
            <DataGrid AutoGenerateColumns="False" Name="asd" CanUserAddRows="False" ItemsSource="{Binding BindFilter}">
                <DataGrid.Columns>
                    <DataGridTemplateColumn>
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate DataType="{x:Type viewModel:StudentSearchFilter}">
                                <ComboBox MinWidth="100"  DisplayMemberPath="Title" ItemsSource="{Binding AndOrs}" Visibility="{Binding IsOtherFilters,Converter={StaticResource VisibilityConverter}}"
                                          SelectedItem="{Binding SelectedAndOr,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" />
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                    </DataGridTemplateColumn>
                    <DataGridTemplateColumn >
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate DataType="{x:Type viewModel:StudentSearchFilter}">
                                <ComboBox IsEnabled="{Binding SelectedFeildHasSetted}" MinWidth="100"   DisplayMemberPath="Title" ItemsSource="{Binding Feilds}" SelectedItem="{Binding SelectedFeild,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged }"/>
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                    </DataGridTemplateColumn>
                    <DataGridTemplateColumn>
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate DataType="{x:Type viewModel:StudentSearchFilter}">
                                <ComboBox MinWidth="100"  DisplayMemberPath="Title" ItemsSource="{Binding Operators}" IsEnabled="{Binding SelectedFeildHasSetted}"
                                          SelectedItem="{Binding SelectedOperator,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" />
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                    </DataGridTemplateColumn>
                    <DataGridTemplateColumn Width="*">
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate DataType="{x:Type viewModel:StudentSearchFilter}">
                                <TextBox IsEnabled="{Binding SelectedFeildHasSetted}" MinWidth="200" Text="{Binding SearchValue,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>
                                <!--<TextBox Text="{Binding SearchValue,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>-->
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                    </DataGridTemplateColumn>
                </DataGrid.Columns>
            </DataGrid>

            <Button Content="+" HorizontalAlignment="Left" Command="{Binding AddFilter}"/>
            <Button Content="Result" Command="{Binding ExecuteSearchFilter}"/>
            <DataGrid ItemsSource="{Binding Results}">
                
            </DataGrid>
        </WrapPanel>
    </Grid>
</Window>