public static StrongLicense Load(string fileName, out string errorMessage)
{
errorMessage = null;
StrongLicense license = null;
if (!File.Exists(fileName))
{
return(license);
}
try
{
license = new StrongLicense
{
_fileName = fileName,
ActivationKey = File.ReadAllText(fileName).Decrypt(PASSWORD)
};
}
catch (Exception ex)
{
errorMessage = ex.Message;
license = null;
}
return(license);
}
public static StrongLicense Load(string serialKey, string activationKey, out string errorMessage)
{
errorMessage = null;
StrongLicense license = null;
try
{
license.ActivationKey = activationKey;
if (!license.SerialKey.Equals(serialKey, StringComparison.InvariantCultureIgnoreCase))
{
errorMessage = "Invalid serial key.";
license = null;
}
}
catch (Exception ex)
{
errorMessage = ex.Message;
license = null;
}
return(license);
}
public static StrongLicense Generate(
DateTime isssueDate,
DateTime expirationDate,
string email,
string businessName,
string contactPerson,
string contactNumber,
string machineName,
string machineKey,
string fileName = "")
{
var license = new StrongLicense();
license.SerialKey = GenerateSerial();
license.GenerateActivationKey(isssueDate, expirationDate, email, machineKey, machineName, businessName, contactPerson, contactNumber);
if (!string.IsNullOrEmpty(fileName))
{
license.Save(fileName);
}
return(license);
}
bool IsValid(StrongLicense license)
{
var currentDate = DateTime.Now;
if (currentDate.Date < license.IssueDate.Date)
{
return(false);
}
if (currentDate.Date > license.ExpirationDate.Date)
{
return(false);
}
if (string.IsNullOrEmpty(license.MachineKey))
{
return(false);
}
if (!license.MachineKey.Equals(GetMachineKey()))
{
return(false);
}
return(true);
}