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 WindowsFormsApp19 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { { DataTable data = DbConnection.select("select * from `Authorization` where Login = '" + textBox1.Text + "' and Pass = '" + textBox2.Text + "'"); if (data.Rows.Count == 1) { Form2 f2 = new Form2(); f2.Show(); Hide(); } else { MessageBox.Show("Неправильный логин или пароль"); } } } } }