Скачать или смотреть Bind check box list using entity framework in ASP.NET Core using Visual studio 2022 | Part 8

Bind check box list using entity framework in ASP.NET Core using Visual studio 2022:
Requirement: SQL server 2012, Visual studio 2022
SQL table:
CREATE TABLE [hobbies_master](
[id] [int] IDENTITY(200,1) NOT NULL,
[hobby_name] [nvarchar](255) NOT NULL,
[display_order] [int] NULL,
PRIMARY KEY CLUSTERED
([id] ASC))

Steps:1
Installation Required through NuGet packages
1) Microsoft.EntityFrameworkCore.SqlServer
2) microsoft.entityframeworkcore.tools
3) Microsoft.Extensions.Configuration


Steps:2
Create a folder Models then Create a Class through the command line of Nuget Package:
Scaffold-DbContext "Server=DESKTOP-HSSNFCU;Database=Sample_db;Trusted_Connection=True; TrustServerCertificate=true;" Microsoft.EntityFrameworkCore.SqlServer -OutputDir Models
-force
Steps:3
// add db context to the container
builder.Services.AddDbContext less sign SampleDbContext greater sign ();
Step 4:
adding view model HobbiesmasterViewModel

[BindProperty] // it can be define on above get method.
public virtual HobbiesmasterViewModel HobbiesmasterViewModel { get; set; }
represents a public property in a class, likely a model, used to bind data to the Razor page.
{ get; set; }:
These are the get and set accessors of the property.
get: Allows you to access the value of the property.
set: Allows you to assign a value to the property.
In simple terms, this defines a public property that can be read and written to.
Steps:5
Need to added the Razor pages:
.cshtml page
.cshtml.cs page

Understand the below sample db context:
private readonly SampleDbContext _context;
private: The field is private, meaning it is only accessible within the class where it is defined.
readonly: This keyword means the field can only be assigned a value once, typically in the constructor, and cannot be changed afterward. This is useful when you want to ensure that the context is immutable throughout the class lifecycle after it is initialized.
SampleDbContext: This refers to your Entity Framework Core DbContext class.
A DbContext is used to interact with the database. It represents a session with the database, providing methods for querying and saving data.