public DateTime?ConvertIssuedDate()
{
if (string.IsNullOrEmpty(IssueDate) || IssueDate.Length != 7)
{
return(null);
}
int year, month, day;
if (!int.TryParse(IssueDate.Substring(0, 3), out year))
{
return(null);
}
if (!int.TryParse(IssueDate.Substring(3, 2), out month))
{
return(null);
}
if (!int.TryParse(IssueDate.Substring(5, 2), out day))
{
return(null);
}
string datestr = string.Format("{0}/{1}/{2}", year + 1911, month, day);
DateTime dt;
if (!DateTime.TryParse(datestr, out dt))
{
return(null);
}
return(dt);
}