Defines a .NET LicenseProvider that uses encrypted licenses generated by the Infralution Licensing System.

The Infralution Licensing System provides a secure way of licensing .NET controls, components and applications. Licenses are protected using public key encryption to minimize possibility of cracking.

Components or controls use the LicenseProviderAttribute to specify this class as the LicenseProvider

Inheritance: System.ComponentModel.LicenseProvider
EncryptedLicenseProvider Class Documentation
Example #1
0
        /// <summary>
        /// Perform licence checking actions.
        /// </summary>
        /// <param name="ribbon">Ribbon control reference.</param>
        protected void PerformLicenceChecking(KryptonRibbon ribbon)
        {
            // Define the encryted licence information
            EncryptedLicenseProvider.SetParameters(_licenseParameters);

            // If an error has already been shown, then no need to test license again
            bool validated = _usageShown;

            if (!validated)
            {
                // Is there a valid license registered?
                License license = null;
                validated = LicenseManager.IsValid(typeof(KryptonRibbon), ribbon, out license);

                // Valid license is not enough!
                if (validated)
                {
                    validated = false;
                    EncryptedLicense encryptedLicense = license as EncryptedLicense;

                    string[] productInfo = encryptedLicense.ProductInfo.Split(',');

                    // Must contain two fields separated by a comma
                    if (productInfo.Length == 2)
                    {
                        // Both fields must not be empty
                        if (!string.IsNullOrEmpty(productInfo[0]) &&
                            !string.IsNullOrEmpty(productInfo[1]))
                        {
                            // Product code must be ...
                            //    'S' = Krypton Suite
                            // And version number...
                            //    '400'
                            validated = (productInfo[1].Equals("400")) && (productInfo[0][0] == 'S');
                        }
                    }
                }
            }

            // If we need to indicate the invalid licensing state...
            if (!validated)
            {
                // Get hold of the assembly version number
                Version thisVersion = Assembly.GetExecutingAssembly().GetName().Version;

                // We want a unique 30 day evaluation period for each major/minor version
                EvaluationMonitor monitor = new EvaluationMonitor(_monitorId + thisVersion.Major.ToString() + thisVersion.Minor.ToString());

                // If the first time we have failed to get the licence or
                // the 30 days evaluation period has expired or the component
                // has been created over a 3000 times then...
                if ((monitor.UsageCount == 0) ||
                    (monitor.UsageCount > 3000) ||
                    (monitor.DaysInUse > 30))
                {
                    // At runtime show a NAG screen to prevent unauthorized use of the control
                    if (LicenseManager.CurrentContext.UsageMode == LicenseUsageMode.Runtime)
                    {
                        MessageBox.Show("This application was created using an unlicensed version of\n" +
                                        "the Krypton Suite control from Component Factory Pty Ltd.\n\n" +
                                        "You must contact your software supplier in order to resolve\n" +
                                        "the licencing issue.",
                                        "Unlicensed Application",
                                        MessageBoxButtons.OK,
                                        MessageBoxIcon.Error);
                    }
                    else
                    {
                        LicenseInstallForm form = new LicenseInstallForm();
                        form.ShowDialog(typeof(KryptonRibbon));
                    }
                }
            }

            // No need to perform check check more than once
            _usageShown = true;
        }