.NET Guidebook

Examples

.NET Database CRUD

Building a CRUD App

.NET database CRUD with EF Core handles data operations.

Introduction to EF Core

Entity Framework Core (EF Core) is a modern object-database mapper for .NET. It simplifies data access by allowing developers to work with a database using .NET objects. EF Core supports LINQ queries, change tracking, updates, and schema migrations.

Setting Up EF Core

To get started with EF Core, ensure you have the necessary NuGet packages installed. You can do this using the Package Manager Console or the command line.

Creating the Database Context

The database context class is the primary class that coordinates EF Core functionality for a given data model. It derives from the DbContext class.

Defining a Model

Models are simple .NET classes that represent the data you want to store in your database. Each model corresponds to a table in the database.

Creating the Database

After defining your models and context, use EF Core migrations to create the database schema. First, add an initial migration and then update the database.

CRUD Operations

CRUD operations (Create, Read, Update, Delete) are the fundamental operations you can perform on a database. Let's explore each one using EF Core.

Create Operation

To add a new record to the database, create a new instance of the model and add it to the context.

Read Operation

To retrieve data, use LINQ queries to fetch data from the database.

Update Operation

To update an existing record, fetch it, modify its properties, and save the changes.

Delete Operation

To remove a record, fetch it from the database and delete it from the context.

Conclusion

EF Core provides a powerful framework for handling database operations in .NET applications. By using EF Core, developers can manage data more efficiently and with less boilerplate code.

Examples

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