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 MySql.Data.MySqlClient; using System.Windows.Forms; namespace WindowsFormsApp17 { public partial class LoginForm : Form { private MySqlConnection con = new MySqlConnection(); public LoginForm() { InitializeComponent(); con.ConnectionString = @"server=localhost;database=user_info;userid=root;password=;"; } private void button1_Click(object sender, EventArgs e) { MySqlCommand cmd; MySqlDataReader dr; ...
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