private bool IsValidData()
{
return
(Validation.IsPresent(txtCountry) && Validation.IsPresent(txtDirector) &&
Validation.IsPresent(txtGenre) && Validation.IsPresent(txtTime) &&
Validation.IsPresent(txtTitle) && Validation.IsPresent(txtYear) &&
Validation.IsInt32(txtYear) && Validation.IsInt32(txtTime) &&
Validation.IsntEmpty(listCast, textCast));
}