check before u look after the (DateTime) this.DIA_RETIRADAT.Text =
this.objREserva.agretirada.dtRetirada.("dd")
if it exists...
if (this.obj....(dd) != dbNull)
{
... //exists
}
else
{
... //don't exists
}
sorry for my bad C#, have to learn it once after my thesis, where i use VB.NET,
is done...