private void cargarComboFabricante()
{
cboFabricante.Items.Clear();
SqlDataReader reader;
SqlCommand consultaServicios = new SqlCommand();
consultaServicios.CommandType = CommandType.Text;
consultaServicios.CommandText = "SELECT DISTINCT AERO_FAB FROM [ABSTRACCIONX4].[AERONAVES]";
consultaServicios.Connection = Program.conexion();
reader = consultaServicios.ExecuteReader();
while (reader.Read())
this.cboFabricante.Items.Add(reader.GetValue(0));
reader.Close();
}