Adding model and DbContext to .Net Core Project

Models.txt

First of all install vscode-nuget-package-manager Extension.
Open .cspro file
Press Ctrl + Shift + P and type >NuGet Package MAnager: Add Package
Type Microsoft.EntityFrameworkCore.SqlServer
use dotnet restore
Create database 'MyDatabase' and a table called MyModels with 3 fields (Id, FullName,Email)
Add 'Models' folder and 'MyDbContext.cs' and 'MyModel.cs' files in it
Open MyModel.cs and add this codes :
    using Microsoft.EntityFrameworkCore;

    namespace ProjectName
    {
        public class MyModel
        {
            public int Id { get; set; }
            public string FullName { get; set; }
            public string Email { get; set; }

        }
    }
Now open MyDbContext.cs and add this codes:
    using Microsoft.EntityFrameworkCore;

    namespace ProjectName
    {
        public class MyDbContext : DbContext
        {
            public DbSet<MyModel> MyModels { get; set; }
            protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
            {
                optionsBuilder.UseSqlServer(@"Data Source=.;Initial Catalog=MyDatabaseName;Persist Security Info=True;User ID=DatabaseUserName;Password=DatabasePassword");
            }
        }

    }
***** Another way for getting connection string is this :
            Create appsettings.json file and write your connection string like this:
                {
                "ConnectionStrings":
                 {
                    "SampleConnection": "Data Source=.;Initial Catalog=MyTestDb;Persist Security Info=True;User ID=sa;Password=123"
                 }
                }
            Now in MyDbContext.cs you can write this code in OnConfiguring method :
                var builder = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);

                var configuration = builder.Build();

                string connectionString = configuration.GetConnectionString("SampleConnection");
                optionsBuilder.UseSqlServer(connectionString);
                
                
Ok, just open your controller and write your usual codes, for example :
    public IActionResult About()
        {
           using(var db = new MyDbContext())
           {
               var data = new MyModel {FullName = "Kamran", Email = "MrSadin@Gmail.Com"};
               db.MyModels.Add(data);
               db.SaveChanges();
               var users = db.MyModels.ToList();
               ViewData["Message"] = users.Count().ToString();
           }
            return View();
        }