c# - Entity Framework code first - update database in different project -

i have test dbcontext use integration tests, have pending changes. it's in project: app.webapi.integration

using system.data.entity; using system.data.entity.infrastructure; using app.web.data; using app.web.model.entities;  namespace app.webapi.integration.data {     public class integrationtestdbcontext : dbcontext, idbcontextfactory<integrationtestdbcontext>     {         public integrationtestdbcontext(string conn = "defaultconnection")             : base(conn)         {             configuration.lazyloadingenabled = false;         }          public integrationtestdbcontext() { }          public virtual idbset<question> questions { get; set; }         public virtual idbset<answer> answers { get; set; }           public virtual void markas(object item, entitystate entitystate)         {             entry(item).state = entitystate;         }          public integrationtestdbcontext create()         {             return new integrationtestdbcontext();         }     } } 

but migrations in seperate project: app.web.data. know ef command can update integrationtestdbcontext migrations other project?

you need custom dbmigrationsconfiguration :

namespace myprogram.migrations {     using system;     using system.data.entity;     using system.data.entity.migrations;     using system.linq;     using system.reflection;     using myprogram;      internal sealed class myconfiguration : dbmigrationsconfiguration<myprogram.mydbcontext>     {         public configuration()         {             automaticmigrationsenabled = false;              // assembly real migration (your dbcontext not test!)             migrationsassembly = assembly.getexecutingassembly();             migrationsnamespace = "assemblynamespace.migrations";         }     } } 

after can create migration code using dbmigrator or use nuget console that:

update-database [-sourcemigration ] [-targetmigration ] [-script] [-force] [-projectname ] [-startupprojectname ] [-configurationtypename ] [-connectionstringname ] []

update-database create , update used database.

update-database -targetmigration yourid -projectname myproject -configurationtypename myproject.migrations.myconfiguration 

you can pass connection string parameter update-database command if the startup project(app.config) not contains connection string