How to implement Identity, Connection String, IdentityDbContext in .Net 6 Part

Sunday, 21 May 2023

How to implement Identity, Connection String, IdentityDbContext in .Net 6 Part - 2

In this article, we are going to create Web API using .Net 6 and Asp.Net Core and also implement JWT Authentication.

Right click on "TimeManager.DAL" add create a folder and put name "Models"

Create "User" class inside "Models" folder see below code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TimeManager.DAL.Models
{
    public class User
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Password { get; set; }
        public string Role { get; set; }
        public DateTime Created { get; set; } = DateTime.Now;
    }
}

Now in User class will inherit "IdentityUser". We will add the package "Microsoft.AspNetCore.Identity". Please follow these step Right click on TimeManager.DAL >> Manage NuGet Packages... >> Search "Microsoft.AspNetCore.Identity" >> Install. Now you can inherit "IdentityUser" code will look like this

using Microsoft.AspNetCore.Identity;

namespace TimeManager.DAL.Models
{
    public class User : IdentityUser
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Password { get; set; }
        public string Role { get; set; }
        public DateTime Created { get; set; } = DateTime.Now;
    }
}

Now we are going to implement context class. In this article, we will see Entity Framework Code First development approach requries us to create a data access context class that inherits from the IdentityDbContext class. In this class, we override the OnModelCreating() method and used to initialize the context such that the model can be further configured before it is locked down. The following is the code snippet for the context class.

Add NuGet Packages before creating IdentityDbContext

using Microsoft.AspNetCore.Identity.EntityFrameworkCore;

using Microsoft.EntityFrameworkCore;

using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using TimeManager.DAL.Models;

namespace TimeManager.DAL
{
    public class ApplicationDbContext : IdentityDbContext<User>
    {
        public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options) : base(options) { }

        protected override void OnModelCreating(ModelBuilder builder)
        {
            base.OnModelCreating(builder);
        }
    }
}

Now we register our context to dependency injection during the application start up. Once we register ApplicationDbContext context as a service to dependency injection, then provide it via constructor to API controller

Following steps to register ApplicationDbContext as a service.

Open the appsettings.json(stores application level settings such as connection string, SMTP etc) file and write the connection string.

{
"ConnectionStrings": {
    "DefaultConnection": "Server=DESKTOP-LL7L6L9;Database=TimeManager;Trusted_Connection=True"
},
"Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
},
"AllowedHosts": "*"
}