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Generic Repository Pattern with ASP.NET MVC and EF
Generic Repository Pattern with ASP.NET MVC and EF provides a concise overview of the generic repository pattern and its implementation with ASP.NET MVC and Entity Framework. The generic repository pattern allows a single repository to be used for data access across all models by abstracting data logic into a shared repository interface. This reduces redundant code, promotes code reuse, and makes the solution easier to maintain and develop quickly. The document outlines the steps to implement this pattern in an ASP.NET MVC application using EF for data access and data modeling.
Generic Repository Pattern with ASP.NET MVC and EF
- 1. Generic Repository Pattern withASP.NET MVC and EF Md. Mahedee Hasan Microsoft MVP | Trainer | Speaker Software Architect LeadSoft Bangladesh Limited Linkedin: http://www.linkedin.com/in/mahedee Blog: http://mahedee.net/ 1
- 2. • MVC Standsfor Model – View – Controller • It is Software Architectural pattern MAHEDEE.NET 2 What is MVC?
- 3. • Is anopen source web application framework • It implements the model-view-controller pattern • MVC design pattern aims to “Separation Of concern” MAHEDEE.NET 3 What is ASP.NET MVC?
- 4. • Entity Frameworkis an ORM. • Work with relational data using domain-specific objects • Eliminates the need for most of the data-access code MAHEDEE.NET 4 What is ASP.NET EF?
- 5. DRY? Don’t repeat yourself -Meansdon't write duplicate code Use generic repository pattern to implement DRY MAHEDEE.NET 5
- 6. • What isDesign Pattern? • Design pattern is a solution of known problems • What is Software Design Pattern? • Is a solution of known problems in Software. • Strategies of solving commonly occurring problems. • A design pattern is not a finish design. • It is like a template to solve a problem. MAHEDEE.NET 6 Software Design Pattern
- 7. Repository Pattern • Mediatorbetween BLL and DAL(Data Source) • It’s a separation layer between Data and Domain Layer – Separates data and domain Layer MAHEDEE.NET 7
- 8. Benefits of RepositoryPattern • Centralizes data logic or service logic. • Provides a substitution point for the unit tests – Both BLL and DAL • Provides a flexible architecture – Can adopt new change easily • Domain driven development is easier MAHEDEE.NET 8
- 9. What is GenericRepository Pattern? • Generally - one repository for one model to access data. – Write similar code again and again • What if Single Repository for all? • Single repository for data access of all models. MAHEDEE.NET 9
- 10. Benefits of GenericRepository Pattern • Reduce redundancy of code • Faster development • Force developer to work same pattern – Possibility of less error or no error • Easy to maintain – Centralize data access logic MAHEDEE.NET 10
- 11. Implementation • Tools andTechnology used – Visual Studio 2013 – Visual C# – ASP.NET MVC 5 – Entity Framework 6 – Razor view engine MAHEDEE.NET 11
- 12. Step 1: Createan ASP.NET MVC 5 application using Visual Studio 2013 MAHEDEE.NET 12 Implementation…
- 13. Step 2: Configureconnection string in web.config MAHEDEE.NET 13 Implementation …
- 14. Step 3: CreateModels MAHEDEE.NET 14 Implementation …
- 15. Step 4: Createa DbContext in Repository folder. MAHEDEE.NET 15 Implementation …
- 16. Step 5: CreateIGenericRepository and GenericRepository in Repository folder MAHEDEE.NET 16 Implementation …
- 17. • Step 6: –Create controllers of each models – Select template “MVC5 Controller with views, using Entity Framework” – Modify Controllers and use Generic Repository in Controller MAHEDEE.NET 17 Implementation …
- 18. • Step 7:Add links to _Layout MAHEDEE.NET 18 Implementation …
- 19. • Step 8:Write following command in package manager console – PM> Enable-Migrations -ContextTypeName GenericRepoContext – PM> Add-Migration initialcreate – PM> Update-Database -Verbose -Force MAHEDEE.NET 19 Implementation …
- 20. Step 9: RunProject MAHEDEE.NET 20 Implementation …
- 21.
Editor's Notes
- #5 DRY – Object Oriented design Principle. Ex. Dept Info in several code
- #6 DRY – Object Oriented design Principle. Ex. Dept Info in several code
- #7 DRY – Object Oriented design Principle. Ex. Dept Info in several code
- #15 Create Designation and Employee Model in model folder Describe model and annotation
- #16 DbContext: Simplified alternative to ObjectContext and is the primary object for interacting with a database using a specified model. DbSet: Simplified alternative to ObjectSet and is used to perform CRUD operations against a specific type from the model
- #17 It's a type constraint on T , specifying that it must be a class.
- #18 Create Designation Controller and Employee Controller. First Add designation and then Employee. Look corresponding view