private void EntrarB_Click(object sender, EventArgs e) { if (string.IsNullOrWhiteSpace(clavetxt.Text) == true || string.IsNullOrWhiteSpace(conftxt.Text) == true) { MessageBox.Show("No se permiten campos vacios"); } else { users us = new users(); //users us = new users(); string login_pass = clavetxt.Text; MD5 md5 = MD5.Create(); byte[] inputBytes = System.Text.Encoding.ASCII.GetBytes(login_pass); byte[] hash = md5.ComputeHash(inputBytes); login_pass = BitConverter.ToString(hash).Replace("-", ""); int clave; clave = Int32.Parse(textBox1.Text); if (clavetxt.Text == conftxt.Text) { MessageBox.Show(us.Cambiarcontra(login_pass, clave)); MenuPrincipal forma2 = new MenuPrincipal(); forma2.Show(); this.Hide(); } } }