Windows Form Application with Entity Freamwork

Windows Form Application with Entity Framework, SQL Server
Open a Windows form Application.

Firstly Create a Model
Right Click the Solution >> Add >> Select the class >> type the appropriate Name for the model.

Then Go to Menu Select Project >> Manage Nuget Packages >> Online >> Select Entity Framework and Install.


 This my UI interface

Two Tables have for this project
Here is my Model.

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

namespace EF_WindowsFormsApplication1
{
    public class Person
    {
        public int PersonId { get; set; }

        public string LastName { get; set; }

        public string FirstName { get; set; }

        public DateTime BirthDate { get; set; }
      
        public virtual List<paddress> paddresss { get; set; }
    }
    public class paddress
    {
        public int Paddressid   { get; set; }
        public string Address { get; set; }

        public int PersonId { get; set; }
        public virtual Person Person { get; set; }

    }
}

Should create a separate class for data database access. 
Right-click the solution. Add a folder name it as DAL.
 Inside the DAL Folder create a class name it as  PersonDbContext

this is the Context class file.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.Entity;

namespace EF_WindowsFormsApplication1
{
    class PersonDbContext : DbContext
    {
        public PersonDbContext()
            : base("name=PersonContext")
        {

        }
        public DbSet<Person> Persons { get; set; }
        public DbSet<paddress> paddress { get; set; }
    }
}
 
Following part should add after the entity-framework tag  to App.config file 

<connectionStrings>
    <add name="PersonContext"

    connectionString="Data Source=.;Initial Catalog=mahiDb;
            Integrated Security=true"

    providerName="System.Data.SqlClient"/>
  </connectionStrings>
  

Code file like this.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace EF_WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
           
        }
       
        private void button1_Click(object sender, EventArgs e)
        {
 //Here First Name should be Capital
           if (!Regex.Match(tb_Fname.Text, "^[A-Z][a-zA-Z]*$").Success)
            {
                // first name was incorrect
                MessageBox.Show("Invalid first name", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
                tb_Fname.Focus();
                return;
            }

                 using (var db = new PersonDbContext())
            {

                var person = new Person
                {
                    FirstName = tb_Fname.Text,
                    LastName = tb_Lname.Text,
                   
                    BirthDate = DateTime.Now, 

                };

                db.Persons.Add(person);
                //db.SaveChanges();

                var padd = new paddress
                {
                    Address = tb_address.Text,
                   
                };
                db.paddress.Add(padd);
                db.SaveChanges();
            
            }

            MessageBox.Show("Person saved !");

        }
    }
}