/// <summary>
/// Print the license codes and expiration dates in string
/// </summary>
/// <returns></returns>
string printLicenseCodes()
{
string printLine = "";
foreach (LicenseCodes lc in Enum.GetValues(typeof(LicenseCodes)))
{
bool avail = LicenseInformation.IsAvailable(lc);
if (avail)
{
printLine += lc.ToString() + "\t" + LicenseInformation.GetExpirationDate(lc);
DateTime expDate = LicenseInformation.GetExpirationDate(lc) ?? DateTime.Now;
TimeSpan remain = expDate.Subtract(DateTime.Now);
printLine += "\t\tTime remaining till expiration: " + remain.Days + " day(s), " + remain.Hours + " hrs(s), " + remain.Minutes + " min(s)\n";
}
else
{
printLine += lc.ToString() + "\t" + "License not available\n";
}
}
return(printLine);
}