private void ConectarDataBaseBtn_Click(object sender, EventArgs e) { string connectionString = "Server=localhost;Database=mydb;Uid=root;Pwd=sebas1995;"; MySql mySql = new MySql(); mySql.ConnectionString = connectionString; mySql.OpenConnection(); mySql.BeginTransaction(); dataGridView1.DataSource = mySql.QuerySQL("Select * from Clientes"); mySql.CommitTransaction(); mySql.CloseConnection(); MessageBox.Show("Conexión exitosa"); }