private void button1_Click(object sender, EventArgs e) { strSql = "select * from Usuarios where Login like @Login and Senha = @Senha"; sqlCon = new SqlConnection(strCon); SqlCommand comando = new SqlCommand(strSql, sqlCon); comando.Parameters.AddWithValue("@Login", SqlDbType.VarChar).Value = txt_login.Text; comando.Parameters.AddWithValue("@Senha", SqlDbType.VarChar).Value = txt_senha.Text; comando.Connection = sqlCon; sqlCon.Open(); DataSet ds = new DataSet(); SqlDataAdapter da = new SqlDataAdapter(comando); da.Fill(ds); sqlCon.Close(); bool loginSuccessful = ((ds.Tables.Count > 0) && (ds.Tables[0].Rows.Count > 0)); if (loginSuccessful) { MessageBox.Show("Login efetuado com sucesso!"); Cadastro cad = new Cadastro(); LogMenu log = new LogMenu(); this.Hide(); cad.ShowDialog(); } else { MessageBox.Show("Usuário ou Senha incorretos!"); } }
private void voltarToolStripMenuItem_Click(object sender, EventArgs e) { LogMenu log = new LogMenu(); this.Hide(); log.ShowDialog(); }