private void btnEntrar_Click(object sender, EventArgs e)
{
con.Open();
MySqlCommand cmd = con.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "select * from usuarios where Login='******' and Senha='" + txtSenha.Text + "'";
cmd.ExecuteNonQuery();
DataTable dt = new DataTable();
MySqlDataAdapter da = new MySqlDataAdapter(cmd);
da.Fill(dt);
i = Convert.ToInt32(dt.Rows.Count.ToString());
if (i == 0)
{
MessageBox.Show("Usuário ou Senha Incorretos", "Login", MessageBoxButtons.OKCancel, MessageBoxIcon.Error);
}
else
{
MessageBox.Show("Olá!", "Login", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
this.Hide();
Form f = new Inicio();
f.Closed += (s, args) => this.Close();
f.Show();
}
con.Close();
}