public IList <Inquilino> ObtenerTodos()
{
IList <Inquilino> res = new List <Inquilino>();
using (SqlConnection connection = new SqlConnection(connectionString))
{
string sql = $"SELECT IdInquilino, Dni, Apellido, Nombre, Direccion, Telefono" +
$" FROM Inquilino";
using (SqlCommand command = new SqlCommand(sql, connection))
{
command.CommandType = CommandType.Text;
connection.Open();
var reader = command.ExecuteReader();
while (reader.Read())
{
Inquilino p = new Inquilino
{
IdInquilino = reader.GetInt32(0),
Dni = reader.GetString(1),
Apellido = reader.GetString(2),
Nombre = reader.GetString(3),
Direccion = reader.GetString(4),
Telefono = reader.GetString(5),
};
res.Add(p);
}
connection.Close();
}
}
return(res);
}
public Inquilino ObtenerPorId(int id)
{
Inquilino e = null;
using (SqlConnection connection = new SqlConnection(connectionString))
{
string sql = $"SELECT IdInquilino, Dni, Apellido, Nombre, Direccion, Telefono FROM Inquilino" +
$" WHERE IdInquilino=@id;";
using (SqlCommand command = new SqlCommand(sql, connection))
{
command.Parameters.AddWithValue("@id", id);
connection.Open();
SqlDataReader reader = command.ExecuteReader();
if (reader.Read())
{
e = new Inquilino
{
IdInquilino = reader.GetInt32(0),
Dni = reader.GetString(1),
Apellido = reader.GetString(2),
Nombre = reader.GetString(3),
Direccion = reader.GetString(4),
Telefono = reader.GetString(5)
};
}
connection.Close();
}
}
return(e);
}
/*public int Modificacion(Inquilino e)
* {
* int res = -1;
* using (SqlConnection connection = new SqlConnection(connectionString))
* {
* string sql = $"UPDATE Inquilino SET Dni='{e.Dni}', Apellido='{e.Apellido}', Nombre='{e.Nombre}', Direccion'{e.Direccion}', Telefono='{e.Telefono}' " +
* $"WHERE IdInquilino = {e.IdInquilino}";
* using (SqlCommand command = new SqlCommand(sql, connection))
* {
* command.CommandType = CommandType.Text;
* connection.Open();
* res = command.ExecuteNonQuery();
* connection.Close();
* }
* }
* return res;
* }*/
public int Modificacion(Inquilino e)
{
int res = -1;
using (SqlConnection connection = new SqlConnection(connectionString))
{
string sql = "UPDATE Inquilino SET " +
$"{nameof(Inquilino.Dni)}=@dni, " +
$"{nameof(Inquilino.Apellido)}=@apellido, " +
$"{nameof(Inquilino.Nombre)}=@nombre, " +
$"{nameof(Inquilino.Direccion)}=@direccion, " +
$"{nameof(Inquilino.Telefono)}=@telefono " +
$"WHERE {nameof(Inquilino.IdInquilino)}=@id;";
using (SqlCommand command = new SqlCommand(sql, connection))
{
command.Parameters.AddWithValue("@dni", e.Dni);
command.Parameters.AddWithValue("@apellido", e.Apellido);
command.Parameters.AddWithValue("@nombre", e.Nombre);
command.Parameters.AddWithValue("@direccion", e.Direccion);
command.Parameters.AddWithValue("@telefono", e.Telefono);
command.Parameters.AddWithValue("@id", e.IdInquilino);
connection.Open();
res = command.ExecuteNonQuery();
connection.Close();
}
}
return(res);
}
public int Alta(Inquilino e)
{
int res = -1;
using (SqlConnection connection = new SqlConnection(connectionString))
{
string sql = $"INSERT INTO Inquilino(Dni, Apellido, Nombre, Direccion, Telefono) " +
$"VALUES ('{e.Dni}', '{e.Apellido}', '{e.Nombre}', '{e.Direccion}', '{e.Telefono}')";
using (SqlCommand command = new SqlCommand(sql, connection))
{
command.CommandType = System.Data.CommandType.Text;
connection.Open();
res = command.ExecuteNonQuery();
command.CommandText = "SELECT SCOPE_IDENTITY()";
var id = command.ExecuteScalar();
e.IdInquilino = Convert.ToInt32(id);
connection.Close();
}
}
return(res);
}