C# WPF project entity framework не будет добавлять запись в БД

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Hello all I have a C# WPF project and I added Entity Framework to it with a ADO.net data model. I have a .mdf database with a table in it and data. When I call the data.ToList() method I get the correct data from my db into my datagrid. So that is correct. The issue I am having is when I go to create/insert a new file into the database the record does not get saved. I also get 0 errors. I been reading online for hours trying to figure this out and so far all I came up with is maybe its because of my connection string because I have |data directory| or something like that it is maybe? I can also load the user into the screen when I send the selected user to the next screen I have created. Just cannot figure out why my user will not save to the database.

//connstring –
<connectionStrings>
    <add name="EFcontext" connectionString="metadata=res://*/EFModel.csdl|res://*/EFModel.ssdl|res://*/EFModel.msl;provider=System.Data.SqlClient;provider connection string="data source=(LocalDB)\MSSQLLocalDB;attachdbfilename=|DataDirectory|\EntityFramewordDB.mdf;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
  </connectionStrings>
public class CRUD
    {
        //get the entity framework model context that was created.
        private EFcontext framework = null;

        public CRUD()
        {
            framework = new EFcontext();
        }

        public Person GetPersonById(int personId)
        {
            return framework.People.Find(personId);
        }

        public List<Person> GetAllPeopleByList()
        {
            return framework.People.ToList();
        }

        public void CreatePerson(Person person)
        {
            if(person != null)
            {
                framework.People.Add(person);
                framework.SaveChanges();
            }
        } public partial class MainWindow : Window
    {
        private CRUD entityFramework;
        private Person dataGridPerson;

        public MainWindow()
        {
            InitializeComponent();
            entityFramework = new CRUD();
            PopulateDataGrid();
        }

        private void PopulateDataGrid()
        {
            DataGridPeople.ItemsSource = entityFramework.GetAllPeopleByList();
        }

        private void BtnCreate_Click(object sender, RoutedEventArgs e)
        {
            Window CreatePerson = new CreateUpdateWindow();
            CreatePerson.Show();
            Close();
        } public partial class CreateUpdateWindow : Window
    {
        private CRUD entityFramework;
        private Person personWindowObject; 							public CreateUpdateWindow()
        {
            InitializeComponent();
            entityFramework = new CRUD();

        private void BtnSave_Click(object sender, RoutedEventArgs e)
        {
            Person personObject = new Person();
            Window mainWindow = new MainWindow();                    DateTime dateNow = DateTime.Now;
                    personObject.DateCreated = dateNow;
                    entityFramework.CreatePerson(personObject);
                    MessageBox.Show("Created new person.", "Created");
                    mainWindow.Show();
                    Close();
                }
            
}
//copied all sections of my code what is being used for creating user and to add 2 db

Что я уже пробовал:

глядя в интернете в течение нескольких часов, пытаясь по-разному, может быть, проблема connstring не уверена?

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