using WinFormsApp5.Models; namespace WinFormsApp5 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { Ispr2525KosmyinDmLoginContext context = new(); User? user = context.Users //.Where(user => user.Login == user_login.Text && user.Password == user_login.Text) .InClude() .FirstOrDefault(user => user.Login == user_login.Text); if (user != null) { MessageBox.Show(); } else { MessageBox.Show("неправильный логин или пароль"); } } } }