int intValue = 182;

string hexValue = intValue.ToString("X");

int intAgain = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);

var bigint =
                System.Numerics.BigInteger.Parse("00010471000001BF001F",
                System.Globalization.NumberStyles.HexNumber,
                System.Globalization.CultureInfo.InvariantCulture);

            // Get Customer Type from Customer click on Print Button
            int customerType = 0;

            // Create Object without instantiation
            object obj;


            //Instantiate obj according to customer Type
            if (customerType == 1)
            {
                obj = new Customer1();
            }
            else if (customerType == 2)
            {
                obj = new Customer2();
            }
            // Problem:
            //          1: Scattered New Keywords
            //          2: Client side is aware of Customer Type

namespace Interface
{
    public interface ICustomer
    {
        void Report();
    }
}

// Customer1
using System;
using Interface;

namespace MainClass
{
    public class Customer1 : ICustomer
    {
        public void Report()
        {           
            Console.WriteLine("این گزارش مخصوص مشتری نوع اول است");           
        }
    }
}

//Customer2
using System;
using Interface;

namespace MainClass
{
   public class Customer2 : ICustomer
    {
        public void Report()
        {           
            Console.WriteLine("این گزارش مخصوص مشتری نوع دوم است");           
        }
    }
}

//Factory
using System;
using Interface;
using MainClass;

namespace FactoryClass
{
    public class clsFactory
    {
        static public ICustomer getCustomerType(int intCustomerType)
        {
            ICustomer objCust;
            if (intCustomerType == 1)
            {
                objCust = new Customer1();
            }
            else if (intCustomerType == 2)
            {
                objCust = new Customer2();
            }
            else
            {
                return null;
            }
            return objCust;
        }
    }
}

//UI (Client)
using System;
using FactoryClass;
using Interface;

namespace DesignPattern
{
    class Program
    {
        static void Main(string[] args)
        {
            int intCustomerType = 0;
            ICustomer objCust;
            Console.WriteLine("نوع مشتری را وارد نمایید");           
            intCustomerType = Convert.ToInt16(Console.ReadLine());
            objCust = clsFactory.getCustomerType(intCustomerType);
            objCust.Report();
            Console.ReadLine();
        }
    }
}

    var ms = new MemoryStream();
    using (var writer = XmlWriter.Create(ms))
    {
        EdmxWriter.WriteEdmx(new Context(), writer);
    }

    var xDoc = XDocument.Load(ms);

    var ssdl = xDoc.Descendants("{http://schemas.microsoft.com/ado/2009/02/edm/ssdl}Schema").Single();
    var csdl = xDoc.Descendants("{http://schemas.microsoft.com/ado/2008/09/edm}Schema").Single();
    var msl = xDoc.Descendants("{http://schemas.microsoft.com/ado/2008/09/mapping/cs}Mapping").Single();

 EdmGen.exe /mode:ViewGeneration /incsdl:Context.csdl  /inmsl:Context.msl /inssdl:Context.ssdl /outviews:Context.Views.cs

using System;
using System.Data.Entity;
using System.Data.Entity.Design;
using System.Data.Entity.Infrastructure;
using System.Data.Mapping;
using System.Data.Metadata.Edm;
using System.IO;
using System.Linq;
using System.Xml;
using System.Xml.Linq;

namespace EfUtils
{
    public static class PreGeneratedViewsWriter
    {
        public static void CreatePreGeneratedViewsFile(
                this DbContext contextInstance,
                LanguageOption language = LanguageOption.GenerateCSharpCode,
                string viewsFile = "Context.Views.cs",
                string edmxFile = "context.edmx",
                string ssdlFile = "context.ssdl.xml",
                string csdlFile = "context.csdl.xml",
                string mslFile = "context.msl.xml")
        {
            using (var contextViewsMemoryStream = new MemoryStream())
            {
                using (var edmxMemoryStream = new MemoryStream())
                {
                    var edmx = createEdmx(contextInstance, edmxFile, edmxMemoryStream);
                    var mappingItemCollection = createMappingItemCollection(ssdlFile, csdlFile, mslFile, edmx);
                    generateViews(language, viewsFile, contextViewsMemoryStream, mappingItemCollection);
                }
            }
        }

        private static void generateViews(LanguageOption language, string viewsFile, MemoryStream contextViewsMemoryStream, StorageMappingItemCollection mappingItemCollection)
        {
            var viewGenerator = new EntityViewGenerator // It's defined in System.Data.Entity.Design.dll
            {
                LanguageOption = language
            };
            using (var streamWriter = new StreamWriter(contextViewsMemoryStream))
            {
                var errors = viewGenerator.GenerateViews(mappingItemCollection, streamWriter).ToList();

                if (errors.Any())
                    throw new InvalidOperationException(errors.First().Message);

                contextViewsMemoryStream.Position = 0;
                using (var reader = new StreamReader(contextViewsMemoryStream))
                {
                    var codeData = reader.ReadToEnd();
                    File.WriteAllText(viewsFile, codeData);
                }
            }
        }

        private static StorageMappingItemCollection createMappingItemCollection(string ssdlFile, string csdlFile, string mslFile, XDocument edmx)
        {
            var ssdl = edmx.Descendants("{http://schemas.microsoft.com/ado/2009/02/edm/ssdl}Schema").Single();
            ssdl.Save(ssdlFile);
            var storeItemCollection = new StoreItemCollection(new[] { ssdl.CreateReader() });

            var csdl = edmx.Descendants("{http://schemas.microsoft.com/ado/2008/09/edm}Schema").Single();
            csdl.Save(csdlFile);
            var edmItemCollection = new EdmItemCollection(new[] { csdl.CreateReader() });

            var msl = edmx.Descendants("{http://schemas.microsoft.com/ado/2008/09/mapping/cs}Mapping").Single();
            msl.Save(mslFile);

            var mappingItemCollection = new StorageMappingItemCollection(edmItemCollection, storeItemCollection, new[] { msl.CreateReader() });
            return mappingItemCollection;
        }

        private static XDocument createEdmx(DbContext contextInstance, string edmxFile, MemoryStream edmxMemoryStream)
        {
            var settings = new XmlWriterSettings { Indent = true };
            using (var writer = XmlWriter.Create(edmxMemoryStream, settings))
            {
                EdmxWriter.WriteEdmx(contextInstance, writer);
            }
            File.WriteAllBytes(edmxFile, edmxMemoryStream.ToArray());

            edmxMemoryStream.Position = 0;
            var edmx = XDocument.Load(edmxMemoryStream);
            return edmx;
        }
    }
}

 Database.SetInitializer<MyContext>(null);

.locals init ([0] class [mscorlib]System.IO.TextWriter w)
  IL_0000:  ldstr      "log.txt"
  IL_0005:  call       class [mscorlib]System.IO.StreamWriter 
      [mscorlib]System.IO.File::CreateText(string)
  IL_000a:  stloc.0
 
 .try
  {
    IL_000b:  ldloc.0
    IL_000c:  ldstr      "This is line one"
    IL_0011:  callvirt   instance void [mscorlib]
      System.IO.TextWriter::WriteLine(string)
    IL_0016:  leave.s    IL_0022
  }  // end .try
  finally
  {
    IL_0018:  ldloc.0
    IL_0019:  brfalse.s  IL_0021
    IL_001b:  ldloc.0
    IL_001c:  callvirt   instance void [mscorlib]
      System.IDisposable::Dispose()
    IL_0021:  endfinally
  }  // end handler

public class StructureMapGlobalFilterProvider : IFilterProvider
    {
        public StructureMapGlobalFilterProvider(IContainer container, GlobalFilterRegistrationList filterList)
        {
            _container = container;
            _filterList = filterList;
        }

        private IContainer _container;
        private GlobalFilterRegistrationList _filterList;

        public IEnumerable<Filter> GetFilters(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
        {
            var filters = new List<Filter>();
            if (_filterList == null || _filterList.Count == 0)
                return filters;
            foreach (GlobalFilterRegistration registration in _filterList)
            {
                var actionFilter = _container.GetInstance(registration.Type);
                var filter = new Filter(actionFilter, FilterScope.Global, registration.Order);
                filters.Add(filter);
            }
            return filters;
        }
    }

    public class GlobalFilterRegistration
    {
        public Type Type { get; set; }
        public int? Order { get; set; }
    }

    public class GlobalFilterRegistrationList : List<GlobalFilterRegistration>
    {
    }

 var globalFilterRegistrationList = new GlobalFilterRegistrationList
                {
                    new GlobalFilterRegistration
                    {
                        Type = typeof (LogAttribute),
                        Order
                            = 1
                    }
                };
                container.Configure(x =>
                {
                    x.For<IFilterProvider>().Use<StructureMapGlobalFilterProvider>();
                    x.For<GlobalFilterRegistrationList>().Use(globalFilterRegistrationList);
                });

    public class StructureMapControllerFactory : DefaultControllerFactory
    {
        protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType)
        {
            if (controllerType == null)
                throw new InvalidOperationException(string.Format("Page not found: {0}", requestContext.HttpContext.Request.Url.AbsoluteUri.ToString(CultureInfo.InvariantCulture)));
            return ObjectFactory.GetInstance(controllerType) as Controller;
        }
    }

   protected void Application_Start()
  {
     //Set current Controller factory as StructureMapControllerFactory  
     ControllerBuilder.Current.SetControllerFactory(new StructureMapControllerFactory());
  }

public partial class LoginController : Controller
{
    readonly IUsersService _usersService;
    public LoginController(IUsersService usersService)
    {
       _usersService = usersService;
    }

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.Mvc;
using StructureMap;

namespace Prog
{
    public class StructureMapDependencyResolver : IDependencyResolver
    {
        public object GetService(Type serviceType)
        {
            if (serviceType.IsAbstract || serviceType.IsInterface || !serviceType.IsClass)
                return ObjectFactory.TryGetInstance(serviceType);
            return ObjectFactory.GetInstance(serviceType);
        }

        public IEnumerable<object> GetServices(Type serviceType)
        {
            return ObjectFactory.GetAllInstances(serviceType).Cast<object>();
        }
    }
}

protected void Application_Start()
{
   DependencyResolver.SetResolver(new StructureMapDependencyResolver());
}

        public override string[] GetRolesForUser(string username)
        {
            var cacheKey = string.Format("{0}:{1}", username, ApplicationName);
            var cache = HttpContext.Current.Cache;
            var roles = cache[cacheKey] as string[];
            if (null == roles)
            {              
                using (var db = new Uas3Context())
                {
                    var u = new EfStudentService(db);
                    roles=u.GetUserRoles(username);
                    cache.Insert(cacheKey, roles, null, Cache.NoAbsoluteExpiration, Cache.NoSlidingExpiration);                    
                }
            }
            return roles;
        }

enable-migrations
add-migration Initial -IgnoreChanges
update-database

using System.Data.Entity.Migrations;
using System.Data.Entity.Migrations.Design;

namespace EFTests
{
    /// <summary>
    /// Using Entity Framework Code First with an existing database.
    /// </summary>
    public static class CreateMigrationHistory
    {
        /// <summary>
        /// Creates a new '__MigrationHistory' table.
        /// Enables migrations using Entity Framework Code First on an existing database.
        /// </summary>        
        public static void UpdateDatabase(DbMigrationsConfiguration configuration)
        {            
            var scaffolder = new MigrationScaffolder(configuration);
            // Creates an empty migration, so that the future migrations will start from the current state of your database.
            var scaffoldedMigration = scaffolder.Scaffold("IgnoreChanges", ignoreChanges: true);

            // enable-migrations
            // add-migration Initial -IgnoreChanges
            configuration.MigrationsAssembly = new MigrationCompiler(ProgrammingLanguage.CSharp.ToString())
                                                .Compile(configuration.MigrationsNamespace, scaffoldedMigration);

            // update-database  
            var dbMigrator = new DbMigrator(configuration);            
            dbMigrator.Update();
        }
    }
}

using System;
using System.CodeDom.Compiler;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data.Common;
using System.Data.Entity;
using System.Data.Entity.Migrations;
using System.Data.Entity.Migrations.Design;
using System.Data.Entity.Spatial;
using System.IO;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using System.Resources;
using System.Text;

namespace EF_General.Models.Ex22
{
    public enum ProgrammingLanguage
    {
        CSharp,
        VB
    }

    public class MigrationCompiler
    {
        private readonly CodeDomProvider _codeProvider;

        public MigrationCompiler(string language)
        {
            _codeProvider = CodeDomProvider.CreateProvider(language);
        }

        public Assembly Compile(string @namespace, params ScaffoldedMigration[] scaffoldedMigrations)
        {
            var options = new CompilerParameters
            {
                GenerateExecutable = false,
                GenerateInMemory = true
            };

            options.ReferencedAssemblies.Add(typeof(string).Assembly.Location);
            options.ReferencedAssemblies.Add(typeof(Expression).Assembly.Location);
            options.ReferencedAssemblies.Add(typeof(DbMigrator).Assembly.Location);
            options.ReferencedAssemblies.Add(typeof(DbContext).Assembly.Location);
            options.ReferencedAssemblies.Add(typeof(DbConnection).Assembly.Location);
            options.ReferencedAssemblies.Add(typeof(Component).Assembly.Location);
            options.ReferencedAssemblies.Add(typeof(MigrationCompiler).Assembly.Location);
            options.ReferencedAssemblies.Add(typeof(DbGeography).Assembly.Location);

            var embededResources = GenerateEmbeddedResources(scaffoldedMigrations, @namespace);
            foreach (var resource in embededResources)
                options.EmbeddedResources.Add(resource);

            var sources = scaffoldedMigrations.SelectMany(g => new[] { g.UserCode, g.DesignerCode });

            var compilerResults = _codeProvider.CompileAssemblyFromSource(options, sources.ToArray());
            foreach (var resource in embededResources)
                File.Delete(resource);

            if (compilerResults.Errors.Count > 0)
            {
                throw new InvalidOperationException(BuildCompileErrorMessage(compilerResults.Errors));
            }

            return compilerResults.CompiledAssembly;
        }

        private static string BuildCompileErrorMessage(CompilerErrorCollection errors)
        {
            var stringBuilder = new StringBuilder();

            foreach (CompilerError error in errors)
            {
                stringBuilder.AppendLine(error.ToString());
            }

            return stringBuilder.ToString();
        }

        private static IEnumerable<string> GenerateEmbeddedResources(IEnumerable<ScaffoldedMigration> scaffoldedMigrations, string @namespace)
        {
            foreach (var scaffoldedMigration in scaffoldedMigrations)
            {
                var className = GetClassName(scaffoldedMigration.MigrationId);
                var embededResource = Path.Combine(
                    Path.GetTempPath(),
                    @namespace + "." + className + ".resources");

                using (var writer = new ResourceWriter(embededResource))
                {
                    foreach (var resource in scaffoldedMigration.Resources)
                        writer.AddResource(resource.Key, resource.Value);
                }

                yield return embededResource;
            }
        }

        private static string GetClassName(string migrationId)
        {
            return migrationId
                .Split(new[] { '_' }, 2)
                .Last()
                .Replace(" ", string.Empty);
        }
    }
}

 CreateMigrationHistory.UpdateDatabase(new Configuration());

    public class Configuration : DbMigrationsConfiguration<MyContext>
    {
        public Configuration()
        {
            AutomaticMigrationsEnabled = true;
            AutomaticMigrationDataLossAllowed = true;
        }
    }