public IList <Inquilino> ObtenerTodos()
{
IList <Inquilino> res = new List <Inquilino>();
using (SqlConnection connection = new SqlConnection(connectionString))
{
string sql = $"SELECT InquilinoId, Dni, Nombre, Apellido, Email, Telefono" +
$" FROM Inquilinos";
using (SqlCommand command = new SqlCommand(sql, connection))
{
command.CommandType = CommandType.Text;
connection.Open();
var reader = command.ExecuteReader();
while (reader.Read())
{
Inquilino i = new Inquilino
{
InquilinoId = reader.GetInt32(0),
Dni = reader.GetString(1),
Nombre = reader.GetString(2),
Apellido = reader.GetString(3),
Email = reader.GetString(4),
Telefono = reader.GetString(5),
};
res.Add(i);
}
connection.Close();
}
}
return(res);
}
public int Alta(Inquilino i)
{
int res = -1;
using (SqlConnection connection = new SqlConnection(connectionString))
{
string sql = $"INSERT INTO Inquilinos (Dni, Nombre, Apellido, Email, Telefono) " +
$"VALUES (@dni, @nombre, @apellido, @email, @telefono);" +
$"SELECT SCOPE_IDENTITY();"; //devuelve el id insertado
using (SqlCommand command = new SqlCommand(sql, connection))
{
command.CommandType = CommandType.Text;
command.Parameters.AddWithValue("@dni", i.Dni);
command.Parameters.AddWithValue("@nombre", i.Nombre);
command.Parameters.AddWithValue("@apellido", i.Apellido);
command.Parameters.AddWithValue("@email", i.Email);
command.Parameters.AddWithValue("@telefono", i.Telefono);
connection.Open();
res = Convert.ToInt32(command.ExecuteScalar());
i.InquilinoId = res;
connection.Close();
}
}
return(res);
}
public int Modificacion(Inquilino i)
{
int res = -1;
using (SqlConnection connection = new SqlConnection(connectionString))
{
string sql = $"UPDATE Inquilinos SET Dni=@dni, Nombre=@nombre, Apellido=@apellido, Email=@email, Telefono=@telefono " +
$"WHERE InquilinoId = @id";
using (SqlCommand command = new SqlCommand(sql, connection))
{
command.CommandType = CommandType.Text;
command.CommandType = CommandType.Text;
command.Parameters.AddWithValue("@dni", i.Dni);
command.Parameters.AddWithValue("@nombre", i.Nombre);
command.Parameters.AddWithValue("@apellido", i.Apellido);
command.Parameters.AddWithValue("@email", i.Email);
command.Parameters.AddWithValue("@telefono", i.Telefono);
command.Parameters.AddWithValue("@id", i.InquilinoId);
connection.Open();
res = command.ExecuteNonQuery();
connection.Close();
}
}
return(res);
}
public Inquilino ObtenerInquilinoPorIdAlquiler(int id)
{
Inquilino i = null;
using (SqlConnection connection = new SqlConnection(connectionString))
{
string sql = $"SELECT a.InquilinoId, Dni, Nombre, Apellido, Email, Telefono " +
$" FROM Inquilinos i, Alquileres a" +
$" WHERE i.InquilinoId=a.InquilinoId AND" +
$" a.AlquilerId = @id";
using (SqlCommand command = new SqlCommand(sql, connection))
{
command.Parameters.Add("@id", SqlDbType.Int).Value = id;
command.CommandType = CommandType.Text;
connection.Open();
var reader = command.ExecuteReader();
if (reader.Read())
{
i = new Inquilino
{
InquilinoId = reader.GetInt32(0),
Dni = reader.GetString(1),
Nombre = reader.GetString(2),
Apellido = reader.GetString(3),
Email = reader.GetString(4),
Telefono = reader.GetString(5),
};
}
connection.Close();
}
}
return(i);
}