AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
Updatedatabase command ef9/23/2023 ![]() ![]() What is a migration in entity framework core In this video we will discuss creating and executing EF core migrations in a razor pages project. Part 29 - Using sql server in razor pages project | Text | Slides Part 28 - Install entity framework core in class library project | Text | Slides MongoDB, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.Part 27 - Implement search page in ASP.NET Core | Text | Slides.Microsoft, Microsoft Azure and its products are either registered trademarks or trademarks of Microsoft Corporation.iPhone, iOS and Apple are the registered trademarks or trademarks of Apple Inc.Certified ScrumMaster (CSM) and Certified Scrum Trainer (CST) are registered trademarks of SCRUM ALLIANCE.AWS, Amazon Web Services and its products are either registered trademarks or trademarks of Amazon Web Services, Inc.Android, Android Logo, Google, Google Cloud and its products are either registered trademarks or trademarks of Google, Inc.Apache Hadoop, Hadoop, and Apache logo are either registered trademarks or trademarks of the Apache Software Foundation.Now, run the third command then it will update the already created database by first DbContext migrations. UserID = c.Int(nullable: false, identity: true), public partial class Initial : DbMigration Since Users table is already created by first DbContext migrations. RoleID = c.Int(nullable: false, identity: true),īefore running update command, commented out the generated code for Users tables as shown above. ![]() MigrationsDirectory = override void Seed( context) Thirdly, a new database will be created having initial catalog name (initial catalog = YourDBName) as given in your connections string. UserID = c.Int(nullable: false, identity: true), OrderID = c.Int(nullable: false, identity: true), This file will have all the entities to be created in the database as shown below: public partial class Initial : DbMigration Secondly a class file will be created having name suffix as MigrationsName followed by underscore and a unique generated number. This method will be called after migrating to the latest version. Helps to migrate this DbContext to database Internal sealed class Configuration : DbMigrationsConfiguration When you run above listed command on the Package Manager Console windows one by one then:įirstly a Migrations folder will be added into your applications having Configuration.cs file for Migrations configuration setting. Migrating First DbContext(DataContext) enable-migrations -ContextTypeName -MigrationsDirectory:DataContextMigrationsĪdd-Migration -configuration Initial Suppose you have both DbContexts within a single project as shown in fig.įor migrating these two DbContexts to single database instance run the following commands by using VS2013 or VS2012 package manager console as given below: Syntax - EF Code First Migrations with Multiple DbContexts within same Project enable-migrations -ContextTypeName -MigrationsDirectory: Public UserDataContext():base("DefaultConnection")Ĭase 1 : Multiple DbContexts within a Project Protected override void OnModelCreating(DbModelBuilder modelBuilder) Namespace MultiDataContextMigrations.Models You need to migrates these two into single database instance. Suppose you have two DbContexts DataContext and UserDataContext. ![]() Let's see how to make it possible using EF6. Now, Entity Framework6 code first migrations is able to manage multiple DbContext per physical database instance. Entity Framework5 code first migrations is only able to manage a single DbContext per physical database instance. JavaScript ES6 Interview Questions Answers BookĪSP.NET Web API Questions and Answers BookĮntity Framework code first migrations allows you to create a new database or to update existing database based on your model classes. ![]() NET Framework Questions and Answers BookĪSP.NET and AJAX Questions and Answers BookĮntity Framework 6.x Questions and Answers BookĮntity Framework Core Questions and Answers BookĪzure Administrator Questions and Answers BookĪzure Developer Questions and Answers Book NET Design Patterns Questions and Answers Book NET Microservices Certification TrainingĪSP.NET MVC with WebAPI Certification TrainingĪWS Solutions Architect Certification TrainingĪzure Fundamentals Certification TrainingĪrtificial Intelligence Certification Courseĭata Science with Python Certification Courseĭocker and Kubernetes Certification Trainingįrontend Foundations Certification Training ![]()
0 Comments
Read More
Leave a Reply. |