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Download Introduction To .NET Core 1.0 - Universitatea „Alexandru Ioan Cuza”
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Introduction to .NET Florin Olariu “Alexandru Ioan Cuza”, University of Iași Department of Computer Science Entity Framework Core – part 2 Agenda Entity Framework Core – Short recap Entity Framework Core – Features Entity Framework Core – Database providers support Entity Framework Core - Building connection strings Entity Framework Core - Managing migrations Entity Framework Core - Managing navigation properties Entity Framework Core - Using loading patterns in EF Core Entity Framework Core – Demo Entity Framework Core - Short recap (1/4) Entity Framework Core - Short recap (2/4) Is a lightweight and extensible version of Entity Framework Entity Framework Core - Short recap (3/4) Is a lightweight and extensible version of Entity Framework It is based on ORM (Object Relational Mapper) which give us the possibility to work with databases using .NET objects Entity Framework Core - Short recap (4/4) Entity Framework Core – Features (1/11) Entity Framework Core – Features (2/11) Modeling Entity Framework Core – Features (3/11) Modeling Fluent API Entity Framework Core – Features (4/11) Modeling Fluent API Data annotations Entity Framework Core – Features (5/11) Modeling Fluent API Data annotations Shadow properties Entity Framework Core – Features (6/11) Modeling Fluent API Data annotations Shadow properties Entity Framework Core – Features (7/11) Modeling Fluent API Data annotations Shadow properties It maintains the relation between entities with help of navigation and foreign key properties Entity Framework Core – Features (8/11) Modeling Fluent API Data annotations Shadow properties It maintains the relation between entities with help of navigation and foreign key properties Change Tracking Entity Framework Core – Features (9/11) Modeling Fluent API Data annotations Shadow properties It maintains the relation between entities with help of navigation and foreign key properties Change Tracking SaveChanges Entity Framework Core – Features (10/11) Modeling Fluent API Data annotations Shadow properties It maintains the relation between entities with help of navigation and foreign key properties Change Tracking SaveChanges Model validation Entity Framework Core – Features (11/11) Modeling Fluent API Data annotations Shadow properties It maintains the relation between entities with help of navigation and foreign key properties Change Tracking SaveChanges Model validation Query Entity Framework Core – Database providers support(1/7) Entity Framework Core – Database providers support(2/7) This version of Entity Framework Core 1.0 supports: Entity Framework Core – Database providers support(3/7) This version of Entity Framework Core 1.0 supports: SQL Server Entity Framework Core – Database providers support(4/7) This version of Entity Framework Core 1.0 supports: SQL Server SQL Lite Entity Framework Core – Database providers support(5/7) This version of Entity Framework Core 1.0 supports: SQL Server SQL Lite Postgres Entity Framework Core – Database providers support(6/7) This version of Entity Framework Core 1.0 supports: SQL Server SQL Lite Postgres SQL Compact Entity Framework Core – Database providers support(7/7) This version of Entity Framework Core 1.0 supports: SQL Server SQL Lite Postgres SQL Compact Oracle (is work in progress) Entity Framework Core - Building connection strings(1/5) Entity Framework Core - Building connection strings(2/5) Entity Framework Core - Building connection strings(3/5) Entity Framework Core - Building connection strings(4/5) For Postgre SQL : Nuget Package: Npqsql.EntityFrameCore.PostgreSQL(code first) Nuget Package: Npqsql.EntityFrameCore.PostgreSQL.Design(database first) Entity Framework Core - Building connection strings(5/5) For SQL local DB Nuget Package: Microsoft.EntityFrameworkCore.SqlServer (code first) Nuget Package: Microsoft.EntityFrameworkCore.SqlServer.Design (database first) Entity Framework Core - Managing migrations (1/8) Entity Framework Core - Managing migrations (2/8) Enable-Migrations Entity Framework Core - Managing migrations (3/8) Enable-Migrations Generating & Running Migrations Entity Framework Core - Managing migrations (4/8) Enable-Migrations Generating & Running Migrations Add-Migration Entity Framework Core - Managing migrations (5/8) Enable-Migrations Generating & Running Migrations Add-Migration Update-Database Entity Framework Core - Managing migrations (6/8) Enable-Migrations Generating & Running Migrations Entity Framework Core - Managing migrations (7/8) Enable-Migrations Generating & Running Migrations Entity Framework Core - Managing migrations (8/8) Enable-Migrations Generating & Running Migrations Entity Framework Core - Managing navigation properties(1/14) Entity Framework Core - Managing navigation properties(2/14) One to One => 1:1 Entity Framework Core - Managing navigation properties(3/14) One to One => 1:1 One to Many => 1: many Entity Framework Core - Managing navigation properties(4/14) One to One => 1:1 One to Many => 1: many Many to Many => many : many Entity Framework Core - Managing navigation properties(5/14) One to One => 1:1 One to Many => 1: many Many to Many => many : many Entity Framework Core - Managing navigation properties(6/14) One to One relationship Entity Framework Core - Managing navigation properties(7/14) One to One relationship Entity Framework Core - Managing navigation properties(8/14) One to One relationship Entity Framework Core - Managing navigation properties(9/14) One-to-Many relationship Entity Framework Core - Managing navigation properties(10/14) One-to-Many relationship Entity Framework Core - Managing navigation properties(11/14) One-to-Many relationship Entity Framework Core - Managing navigation properties(12/14) Many-to-Many relationship Entity Framework Core - Managing navigation properties(13/14) Many-to-Many relationship Entity Framework Core - Managing navigation properties(14/14) Many-to-Many relationship Entity Framework Core - Using loading patterns in EF Core(1/19) Entity Framework Core - Using loading patterns in EF Core(2/19) Lazy loading Entity Framework Core - Using loading patterns in EF Core(3/19) Lazy loading Eager loading Entity Framework Core - Using loading patterns in EF Core(4/19) Lazy loading Eager loading Explicit loading Entity Framework Core - Using loading patterns in EF Core(5/19) Lazy loading Entity Framework Core - Using loading patterns in EF Core(6/19) Lazy loading Entity Framework Core - Using loading patterns in EF Core(7/19) Lazy loading Entity Framework Core - Using loading patterns in EF Core(8/19) Lazy loading Let’s change the message from loop in order to show the products. Entity Framework Core - Using loading patterns in EF Core(9/19) Lazy loading Entity Framework Core - Using loading patterns in EF Core(10/19) Lazy loading Entity Framework Core - Using loading patterns in EF Core(11/19) Eager loading Entity Framework Core - Using loading patterns in EF Core(12/19) Eager loading Entity Framework Core - Using loading patterns in EF Core(13/19) Eager loading Entity Framework Core - Using loading patterns in EF Core(14/19) Eager loading Entity Framework Core - Using loading patterns in EF Core(15/19) Explicit loading Entity Framework Core - Using loading patterns in EF Core(16/19) Explicit loading Entity Framework Core - Using loading patterns in EF Core(17/19) Tips Entity Framework Core - Using loading patterns in EF Core(18/19) Tips Carefully consider which loading pattern is best for your code. Entity Framework Core - Using loading patterns in EF Core(19/19) Tips Carefully consider which loading pattern is best for your code. The default of lazy loading can literally make you into a lazy database developer! Entity Framework Core – Demo(1/2) Entity Framework Core – Demo(2/2) Targets: How the model should be created How the navigation properties should be managed Manipulating connection string Database result Manipulating data using EF loading patterns One more thing…(1/2) One more thing…(2/2) Bibliography Price, Mark. C# 6 and .NET Core 1.0: Modern Cross-Platform Development (Kindle). Packt Publishing. Kindle Edition. https://msdn.microsoft.com/en-us/library/jj591621(v=vs.113).aspx http://www.c-sharpcorner.com/article/introduction-to-entity-frameworkcore/ https://docs.efproject.net/en/latest/platforms/full-dotnet/new-db.html Questions Do you have any other questions? Thanks! See you next time!
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