Introduction to ASP.NET and EF Core

Md. Mahedee HasanMicrosoft MVP , Visual Studio and Development Technologies

Software Architect, Leadsoft Bangladesh Limited

Trainer, Leads Technology Limited

Microsoft Community Contributor

Blog: http://mahedee.net

MVP | Software Architect | Trainer | Technical Blogger | MCTS

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• ASP 1996-2000

• Also called classic asp

• Server side scripting to create dynamic content

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History of ASP.NET

• ASP.NET 2000 – Present

• First release with .NET framework 1.0

• HTML like mark up to generate dynamic content

• Later version used code behind mode (Clean code)

• Later version introduced– Master Pages and template engine

• Compiled code

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History of ASP.NET …

• ASP.NET MVC (2009 – Current)

• Inception in 2007

• Released as open source

• Build on ASP.NET framework uses MVC development Pattern.

• Rezor engine to view generation

• Later version emphasize on multi threading (MVC 5)

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History of ASP.NET …

• ASP.NET Web API (2012- Current)

• Introduced with ASP.NET MVC 4

• Created to support RESTful services

• Content negotiation (JSON/XML)

• Supported OData string Queries

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History of ASP.NET …

• Platform dependent

• Close source

• Depends only on IIS

• Load unnecessary component when running.

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Some Problems before ASP.NET Core

• ASP.NET Core 1.0

• Release 27 June, 2016

• Revolution in ASP.NET Framework

• Open source and cross platform framework

• Intention building modern and cloud applications– Such as web apps, IoT apps and mobile backends.

• ASP.NET Core apps can run on – .NET Core or on the full .NET Framework

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Introduction to ASP.NET Core

• Foundational Improvements

• ASP.NET Core is no longer based on System.Web.dll

• It is based on NuGet packages.

• Unify MVC with Web API

• Integration of modern client‐side frameworks

• Built‐in dependency injection (IOC)

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Introduction to ASP.NET Core …

• Foundational Improvements …

• No need to compile while developing

• Build and run cross‐platform ASP.NET apps on Windows, Mac and Linux

• Open source and community focused

• New claim based security policy

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Introduction to ASP.NET Core …

• Download and Install

• Visual Studio 2015 Update 3

• .NET Core 1.0.0 - VS 2015 Tooling Preview 2

• Install for windows : https://www.microsoft.com/net/core#windows

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Installing ASP.NET Core 1.0

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ASP.NET Core 1.0

• Microsoft SQL Server

• Npgsql (PostgreSQL)

• MySQL (Official)

• Pomelo (MySQL)

• Devart (MySQL, Oracle, PostgreSQL, SQLite, DB2, SQL Server, and more)

• SQLite

• Microsoft SQL Server Compact Edition

• IBM Data Servers

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EF Core data provider

• Install Entity Framework• Tools ‣ NuGet Package Manager ‣ Package Manager Console

• Install‐Package Microsoft.EntityFrameworkCore.SqlServer

• Install‐Package Microsoft.EntityFrameworkCore.Tools –Pre

• Install-Package Microsoft.EntityFrameworkCore.SqlServer.Design

• Add Migration Update Database• PM>Add-Migration

• PM>Update-Database

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Basic Commands

• Global.asax and App_Start folder is gone !

• Global.json and Project.json is here!

• Src and wwwroot folder is introduced!

• Increases responsibility of Startup.cs

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A Quick Look of Application Structure

Feature Comparison

EF Core vs. EF6.x

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Creating a Model EF6.x EF Core 1.0.0

Basic modelling (classes, properties, etc.) Yes Yes

Conventions Yes Yes

Custom conventions Yes Partial

Data annotations Yes Yes

Fluent API Yes Yes

Inheritance: Table per hierarchy (TPH) Yes Yes

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Feature Comparison

EF Core vs. EF6.x

Creating a Model EF6.x EF Core 1.0.0

Inheritance: Table per type (TPT) Yes

Inheritance: Table per concrete class

(TPC)Yes

Shadow state properties Yes

Alternate keys Yes

Many-to-many: With join entity Yes Yes

Many-to-many: Without join entity Yes

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Feature ComparisonEF Core vs. EF6.x

Creating a Model EF6.x EF Core 1.0.0

Key generation: Database Yes Yes

Key generation: Client Yes

Complex/value types Yes

Spatial data Yes

Graphical visualization of model Yes

Graphical drag/drop editor Yes

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Feature ComparisonEF Core vs. EF6.x

Creating a Model EF6.x EF Core 1.0.0

Model format: Code Yes Yes

Model format: EDMX (XML) Yes

Reverse engineer model from database:

Command lineYes

Reverse engineer model from database:

VS wizardYes

Incremental update model from

databaseYes

Model format: Code Yes Yes

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Feature ComparisonEF Core vs. EF6.x

Querying Data EF6.x EF Core 1.0.0

LINQ: Simple queries Stable Stable

LINQ: Moderate queries Stable Stabilizing

LINQ: Complex queries Stable In-Progress

LINQ: Queries using navigation

propertiesStable In-Progress

“Pretty” SQL generation Poor Yes

Mixed client/server evaluation Yes

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Feature ComparisonEF Core vs. EF6.x

Querying Data EF6.x EF Core 1.0.0

Loading related data: Eager Yes Yes

Loading related data: Lazy Yes

Loading related data: Explicit Yes

Raw SQL queries: Model types Yes Yes

Raw SQL queries: Un-mapped types Yes

Raw SQL queries: Composing with LINQ Yes

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Feature ComparisonEF Core vs. EF6.x

Saving Data EF6.x EF Core 1.0.0

SaveChanges Yes Yes

Change tracking: Snapshot Yes Yes

Change tracking: Notification Yes Yes

Accessing tracked state Yes Partial

Optimistic concurrency Yes Yes

Transactions Yes Yes

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Feature ComparisonEF Core vs. EF6.x

Saving Data EF6.x EF Core 1.0.0

Batching of statements Yes

Stored procedure Yes

Detached graph support (N-Tier): Low

level APIsPoor Yes

Detached graph support (N-Tier): End-to-

endPoor

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Feature ComparisonEF Core vs. EF6.x

Other Features EF6.x EF Core 1.0.0

Migrations Yes Yes

Database creation/deletion APIs Yes Yes

Seed data Yes

Connection resiliency Yes

Lifecycle hooks (events, command

interception, ...)Yes

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Feature ComparisonEF Core vs. EF6.x

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Feature ComparisonEF Core vs. EF6.x

Application Models EF6.x EF Core 1.0.0

WinForms Yes Yes

WPF Yes Yes

Console Yes Yes

ASP.NET Yes Yes

ASP.NET Core Yes

Xamarin Coming soon 2

UWP Yes

• Porting from EF6.x to EF Core

• https://docs.efproject.net/en/latest/efcore-vs-ef6/porting/

• Migrating From ASP.NET MVC to ASP.NET Core MVC

• https://docs.asp.net/en/latest/migration/mvc.html

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Migration or Porting

• IIS

• Kestrel

• Nginx (pronounced "engine x")

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Servers for ASP.NET Core Application

• If any questions ASP.NET, IIS, .NET Framework, C#, SQL Sever and Design Pattern, search here:http://mahedee.net

• Email me:

mahedee.hasan@gmail.com; Mahedee_hasan@leads-bd.com

• Tag me in facebook group post

• https://www.facebook.com/groups/mstech.bd

• https://www.facebook.com/groups/techshareonline/

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Q&A

• All slides, Including some training slide here

http://www.slideshare.net/mahedee19

• Me in Facebook:

https://facebook.com/mahedee19

• Me in Linkedin:

https://www.linkedin.com/in/mahedee

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Q&A

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