// Set license key with new one and check it's availability
public override bool SetLicense(string license)
{
var newLicense = Transformations.Base64Encode(Guid.NewGuid().ToString()) +
Transformations.Base64Encode(license) +
Transformations.Base64Encode(Guid.NewGuid().ToString());
var key = Registry.CurrentUser.OpenSubKey(@"SOFTWARE\EA-App", true);
if (key != null)
{
key.SetValue("Set1", newLicense);
}
CheckLicense();
return(LicenseValuePair.Key);
}
private void CheckLicense()
{
// Open Licensed Saved Register Key
var key = Registry.CurrentUser.OpenSubKey(@"SOFTWARE\EA-App");
var step = 2;
if (key == null)
{
step = 0;
}
while (step < 3)
{
switch (step)
{
case 0: // Create Register Key to Save License
key = Registry.CurrentUser.CreateSubKey(@"SOFTWARE\EA-App");
step = 1;
break;
case 1: // Start 7 days trial if it is first setup
var ci = new CultureInfo("tr-tr", false);
ci.DateTimeFormat.ShortDatePattern = "dd/MM/yyyy";
ci.DateTimeFormat.ShortTimePattern = "hh:mm:ss";
Thread.CurrentThread.CurrentCulture = ci;
Thread.CurrentThread.CurrentUICulture = ci;
if (key == null) // if key not available create new one
{
step = 0;
break;
}
key.SetValue("Set1", Transformations.Base64Encode(DateTime.Now.AddDays(7).ToString(ci)));
step = 2;
break;
case 2: // Read License from Register Key and Check Availability
if (key != null)
{
var value = key.GetValue("Set1").ToString();
var licenseKey = value.Substring(48, value.Length - 96);
var keyValue = Transformations.Base64Decode(licenseKey);
key.Close();
if (licenseKey == DEFAULT) // if license is default set license to N/A and exit
{
base.CheckLicense(new KeyValuePair <bool, string>(true, "N/A"));
step = 3;
break;
}
// Check availability of the license and set property then exit
var result = DateTime.Compare(Convert.ToDateTime(keyValue), DateTime.Now) > 0;
base.CheckLicense(new KeyValuePair <bool, string>(result, keyValue));
step = 3;
}
else // if key not available create new one
{
step = 0;
}
break;
default:
step = 4; // exit
break;
}
}
}