public static void DBExcluir(Usuarios u)
{
NpgsqlConnection conn = DBConexao.Conectar();
string query = "DELETE FROM USUARIOS WHERE ID = @I";
NpgsqlCommand cmd = new NpgsqlCommand(query);
cmd.Connection = conn;
cmd.Parameters.Add("i", u.getId());
if (cmd.ExecuteNonQuery() == 1)
{
MessageBox.Show("Excluído com sucesso!", "Sucesso", MessageBoxButtons.OK);
}
else
{
MessageBox.Show("Erro ao excluir!", "Erro", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
public static void DBEditar(Categoria c)
{
NpgsqlConnection conn = DBConexao.Conectar();
string query = "UPDATE Categorias SET descricao = @n WHERE ID = @i";
NpgsqlCommand cmd = new NpgsqlCommand(query);
cmd.Connection = conn;
cmd.Parameters.Add("i", c.getId());
cmd.Parameters.Add("n", c.getDescricao());
if (cmd.ExecuteNonQuery() == 1)
{
MessageBox.Show("Categoria alterado com sucesso", "Sucesso", MessageBoxButtons.OK);
}
else
{
MessageBox.Show("Erro ao alterar!", "Erro", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
public static void DBEditar(Fabricantes f)
{
NpgsqlConnection conn = DBConexao.Conectar();
string query = "UPDATE Fabricante SET NOME = @n WHERE ID = @i";
NpgsqlCommand cmd = new NpgsqlCommand(query);
cmd.Connection = conn;
cmd.Parameters.Add("i", f.getId());
cmd.Parameters.Add("n", f.getNome());
if (cmd.ExecuteNonQuery() == 1)
{
MessageBox.Show("Fabricante alterado com sucesso", "Sucesso", MessageBoxButtons.OK);
}
else
{
MessageBox.Show("Erro ao alterar!", "Erro", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
public static void Inserir(Categoria c)
{
NpgsqlConnection conn = DBConexao.Conectar();
string query = "INSERT INTO CATEGORIA (DESCRICAO) VALUES (@c)";
NpgsqlCommand cmd = new NpgsqlCommand(query);
cmd.Connection = conn;
cmd.Parameters.Add("c", c.getDescricao());
if (cmd.ExecuteNonQuery() == 1)
{
frmMain f1 = new frmMain();
MessageBox.Show("Categoria cadastrada com sucesso");
}
else
{
MessageBox.Show("Erro ao cadastrar categoria");
}
}
public static void Inserir(Fabricantes f)
{
NpgsqlConnection conn = DBConexao.Conectar();
string query = "INSERT INTO FABRICANTE(NOME) VALUES (@n)";
NpgsqlCommand cmd = new NpgsqlCommand(query);
cmd.Connection = conn;
cmd.Parameters.Add("n", f.getNome());
if (cmd.ExecuteNonQuery() == 1)
{
frmMain f1 = new frmMain();
MessageBox.Show("fabricante cadastrado com sucesso");
}
else
{
MessageBox.Show("Erro ao cadastrar fabricante");
}
}
public static void DBEditar(Usuarios u)
{
NpgsqlConnection conn = DBConexao.Conectar();
string query = "UPDATE USUARIOS SET NOME = @n, LOGIN = @l, SENHA = @s WHERE ID = @i";
NpgsqlCommand cmd = new NpgsqlCommand(query);
cmd.Connection = conn;
cmd.Parameters.Add("i", u.getId());
cmd.Parameters.Add("n", u.getNome());
cmd.Parameters.Add("l", u.getLogin());
cmd.Parameters.Add("s", u.getSenha());
if (cmd.ExecuteNonQuery() == 1)
{
MessageBox.Show("Usuário alterado com sucesso", "Sucesso", MessageBoxButtons.OK);
}
else
{
MessageBox.Show("Erro ao alterar!", "Erro", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
public List <Fabricantes> DBBuscar()
{
NpgsqlConnection conn = DBConexao.Conectar();
string query = "SELECT ID, NOME FROM FABRICANTE";
NpgsqlCommand cmd = new NpgsqlCommand(query);
cmd.Connection = conn;
NpgsqlDataReader reader = cmd.ExecuteReader();
List <Fabricantes> lista = new List <Fabricantes>();
while (reader.Read())
{
Fabricantes f = new Fabricantes();
f.id = (Convert.ToInt32(reader["id"]));
f.nome = (reader["nome"].ToString());
lista.Add(f);
}
return(lista);
}
public static bool Entrar(Usuarios u)
{
NpgsqlConnection conn = DBConexao.Conectar();
string query = "SELECT LOGIN, SENHA FROM USUARIOS WHERE LOGIN = @u AND SENHA = @s";
NpgsqlCommand cmd = new NpgsqlCommand(query);
cmd.Connection = conn;
cmd.Parameters.Add("u", u.getLogin());
cmd.Parameters.Add("s", u.getSenha());
NpgsqlDataReader dr = cmd.ExecuteReader();
if (dr.Read())
{
MessageBox.Show("Usuário localizado com sucesso!", "Bem Vindo", MessageBoxButtons.OK);
return(true);
}
else
{
MessageBox.Show("Erro ao localizar o usuário", "Erro", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
}
public static void Inserir(Usuarios u)
{
NpgsqlConnection conn = DBConexao.Conectar();
string query = "INSERT INTO USUARIOS(NOME, LOGIN, SENHA) VALUES (@n, @l, @s)";
NpgsqlCommand cmd = new NpgsqlCommand(query);
cmd.Connection = conn;
cmd.Parameters.Add("n", u.getNome());
cmd.Parameters.Add("l", u.getLogin());
cmd.Parameters.Add("s", u.getSenha());
if (cmd.ExecuteNonQuery() == 1)
{
frmMain f1 = new frmMain();
MessageBox.Show("Usuário cadastrado com sucesso");
}
else
{
MessageBox.Show("Erro ao cadastrar usuario");
}
}
public static List <Categoria> Buscar()
{
NpgsqlConnection conn = DBConexao.Conectar();
string query = "SELECT ID, DESCRICAO FROM CATEGORIA";
NpgsqlCommand cmd = new NpgsqlCommand(query);
cmd.Connection = conn;
NpgsqlDataReader reader = cmd.ExecuteReader();
List <Categoria> lista = new List <Categoria>();
while (reader.Read())
{
Categoria c = new Categoria();
c.id = (Convert.ToInt32(reader["id"]));
c.descricao = (reader["descricao"].ToString());
lista.Add(c);
}
return(lista);
}
public List <Usuarios> DBBuscar()
{
NpgsqlConnection conn = DBConexao.Conectar();
string query = "SELECT ID, NOME, LOGIN FROM USUARIOS ORDER BY ID ASC";
NpgsqlCommand cmd = new NpgsqlCommand(query);
cmd.Connection = conn;
NpgsqlDataReader reader = cmd.ExecuteReader();
List <Usuarios> lista = new List <Usuarios>();
while (reader.Read())
{
Usuarios u = new Usuarios();
u.id = (Convert.ToInt32(reader["id"]));
u.nome = (reader["nome"].ToString());
u.login = (reader["login"].ToString());
lista.Add(u);
}
return(lista);
}
