private void btnPunto1_Click(object sender, EventArgs e)
{
Base derUno1 = new DerivadaUno(10, 11, 12); //103
DerivadaUno derUno2 = new DerivadaUno(1, 2, 3); //103
Base derDos1 = new DerivadaDos(); //2
listaElementos.Add(derUno1);
listaElementos.Add(derUno2);
listaElementos.Add(derDos1);
StringBuilder sb = new StringBuilder();
foreach (Base b in listaElementos)
{
sb.AppendLine(b.VersionFull);
}
CargarRichTextBox(sb.ToString());
}
public static Queue <T> LeerDatos <T>() where T : Base
{
Queue <Base> myQ = new Queue <Base>();
try
{
_command.Connection = _connection;
_command.CommandType = CommandType.Text;
_command.CommandText = "SELECT * FROM Datos";
_connection.Open();
SqlDataReader sr = _command.ExecuteReader();
while (sr.Read())
{
if (sr["derivada"].ToString() == "1")
{
DerivadaUno b = new DerivadaUno(int.Parse(sr[0].ToString()), int.Parse(sr[1].ToString()), int.Parse(sr[2].ToString()));
myQ.Enqueue(b);
}
else
{
Base b = new DerivadaDos(int.Parse(sr[0].ToString()), int.Parse(sr[1].ToString()));
myQ.Enqueue(b);
}
}
sr.Close();
_connection.Close();
}
catch (Exception e)
{
Test lectura = new Test();
lectura.richTest.AppendText(e.Message);
lectura.ShowDialog();
}
Queue <T> retorno = (Queue <T>)Convert.ChangeType(myQ, typeof(Queue <T>));
return(retorno);
}