private void button1_Click(object sender, EventArgs e) { string senha; if (textBox1.Text == "admin" && textBox2.Text == "1") { usuarioLogado = "admin"; FormPrincipal Inicianiza = new FormPrincipal(); Inicianiza.Show(); this.Visible = false; } else { string busca = "select usu_nome, usu_senha from usuarios where usu_nome = '" + textBox1.Text.Trim() + "'"; SqlConnection con = new SqlConnection(); con.ConnectionString = utils.ConexaoDb(); SqlCommand sqlCommand = new SqlCommand(busca, con); con.Open(); SqlDataReader dR = sqlCommand.ExecuteReader(); if (dR.Read()) { senha = dR[1].ToString().Trim(); usuarioLogado = dR[0].ToString().Trim(); if (senha == textBox2.Text) { FormPrincipal Inicianiza = new FormPrincipal(); Inicianiza.Show(); this.Visible = false; } else { u.UserSenhaInvalida(); } } else { u.UserSenhaInvalida(); } con.Close(); } DataContext.fil_codigo = 1; DataContext.TipoConexao = 2; }