/// <summary>Invalid semaphore handler</summary>
/// <param name="sender">object</param>
/// <param name="e">EventArgs</param>
private void InvalidSemaphoreHandler(object sender, EventArgs e) // fires when the network session is no longer valid
{
if (this.InvokeRequired)
{
this.Invoke(new InvalidSemaphoreThreadDelegate(InvalidSemaphoreHandler), new Object[] { sender, e }); // invoke this method using our UI thread delegate
}
else
{
if (!m_Semaphore.Open()) // see if we can re-open our network session
{
while (true)
{
DialogResult mbResult = MessageBox.Show("Your network session is no longer valid. " + m_Semaphore.LastError + "\n\nPress 'Retry' to attempt to re-establish your network session. Pressing 'Cancel' will give you 60 seconds to save your work and exit the application.", "Warning", MessageBoxButtons.RetryCancel, MessageBoxIcon.Warning);
if (mbResult == DialogResult.Cancel)
{
m_CountdownDialog = new LicenseInvalidCountdownForm(60); // exit the application in 60 seconds
m_CountdownDialog.Show();
break;
}
if (!m_Semaphore.Open()) // see if we can re-open our network session
{
using (NetworkLicenseSearchForm searchDlg = new NetworkLicenseSearchForm(m_Semaphore)) // try to search for an open network seat
{
if (searchDlg.ShowDialog() == DialogResult.OK)
{
break;
}
}
}
else
{
break;
}
}
}
}
}
/// <summary>Refreshes the license status on the main form</summary>
public void RefreshLicenseStatus()
{
refreshLicenseButton.Enabled = (m_License.InstallationID.Length > 0);
if (!m_License.Validate())
{
if (m_Semaphore != null)
{
m_Semaphore.Close(); // close our network session if it is open
m_Semaphore = null;
}
statusTextLabel.Text = "The license is invalid or expired.";
userCountLabel.Text = "N/A";
}
else
{
if (m_Semaphore == null)
{
m_Semaphore = new NetworkSemaphore(Path.GetDirectoryName(LicenseConfiguration.LicenseFilePath), LicenseConfiguration.NetworkSemaphorePrefix, m_License.LicenseCounter, true, 15, true);
m_Semaphore.Invalid += new NetworkSemaphore.InvalidEventHandler(InvalidSemaphoreHandler);
if (!m_Semaphore.Open() && m_Semaphore.LastError.ErrorNumber == LicenseError.ERROR_NETWORK_LICENSE_FULL) // try to open a network session
{
NetworkLicenseSearchForm searchDlg = new NetworkLicenseSearchForm(m_Semaphore); // try to search for an open network seat
if (searchDlg.ShowDialog() != DialogResult.OK)
{
statusTextLabel.Text = "Unable to establish a network session. " + m_Semaphore.LastError;
userCountLabel.Text = "N/A";
m_Semaphore = null;
}
}
else if (m_Semaphore.LastError.ErrorNumber != LicenseError.ERROR_NONE)
{
statusTextLabel.Text = "Unable to establish a network session. " + m_Semaphore.LastError;
userCountLabel.Text = "N/A";
m_Semaphore = null;
}
}
if (m_Semaphore != null && m_Semaphore.IsValid)
{
StringBuilder registerInfo = new StringBuilder();
//Check if first name is not empty and not unregistered
if (m_License.Customer.FirstName != "" && m_License.Customer.FirstName != "UNREGISTERED")
{
registerInfo.Append("Registered To: ");
//Append first name
registerInfo.Append(m_License.Customer.FirstName);
}
//Check if last name is not empty and not unregistered
if (m_License.Customer.LastName != "" && m_License.Customer.LastName != "UNREGISTERED")
{
if (registerInfo.ToString() == "")
{
registerInfo.Append("Registered To:");
}
registerInfo.Append(" ");
//Append last name
registerInfo.Append(m_License.Customer.LastName);
}
//Check if company name is not empty and not unregistered
if (m_License.Customer.CompanyName != "" && m_License.Customer.CompanyName != "UNREGISTERED")
{
if (registerInfo.ToString() == "")
{
registerInfo.Append("Registered To:");
}
registerInfo.Append(" ");
//Append company name
registerInfo.Append("[" + m_License.Customer.CompanyName + "]");
}
if (registerInfo.ToString() != "")
{
registerInfo.Append(Environment.NewLine);
}
//Append license ID
registerInfo.Append("License ID: " + m_License.LicenseID);
statusTextLabel.Text = "Fully Licensed." + Environment.NewLine +
registerInfo.ToString();
userCountLabel.Text = m_Semaphore.SeatsActive.ToString() + " out of " + m_License.LicenseCounter.ToString(); // display how many network users are running the application
}
}
}
/// <summary>Updates the License's status in the <see cref="LicensingGui"/> and checks if network seats are available.</summary>
/// <returns>Returns true if the network seats are not depleted, false otherwise</returns>
private bool UpdateLicenseStatus()
{
SampleLicense license = SampleLicense.CreateNewLicense(sampleLicensingGui);
license.LoadFile(LicenseConfiguration.LicenseFilePath);
if (license.LicenseID != m_License.LicenseID || license.InstallationID != m_License.InstallationID)
{
sampleLicensingGui.ApplicationLicense = license;
m_License = license;
if (m_Semaphore != null)
{
m_Semaphore.Close();
m_Semaphore = null;
}
}
if (!m_LastLicenseValidationResult || m_License.LastError.ErrorNumber != LicenseError.ERROR_NONE)
{
statusLabel.Text = m_License.GenerateNetworkLicenseStatusString(m_LastLicenseValidationResult, m_Semaphore);
m_License.InitializeNetworkLicenseStatusEntries(m_LastLicenseValidationResult, sampleLicensingGui, m_Semaphore);
//Check seats count and set the status, when No seats available and license re-activation completed with errors(No activation left or Invalid License ID and/or Password).
if (m_License.LastError.ErrorNumber == LicenseError.ERROR_WEBSERVICE_RETURNED_FAILURE && m_Semaphore == null)
{
m_Semaphore = new NetworkSemaphore(Path.GetDirectoryName(LicenseConfiguration.LicenseFilePath), LicenseConfiguration.NetworkSemaphorePrefix, m_License.LicenseCounter, true, 15, true);
if (!m_Semaphore.Open() && m_Semaphore.LastError.ErrorNumber == LicenseError.ERROR_NETWORK_LICENSE_FULL) // try to open a network session
{
statusLabel.Text = m_License.GenerateLicenseStatusString(m_LastLicenseValidationResult) + "No Seats Available.";
m_License.InitializeLicenseStatusEntries(m_LastLicenseValidationResult, sampleLicensingGui);
sampleLicensingGui.LicenseStatusEntries.Add(new LicenseStatusEntry(LicenseStatusIcon.Information, "Network Seats", "No Seats Available"));
}
m_Semaphore = null;
}
return(false);
}
if (!m_License.Validate())
{
if (m_Semaphore != null)
{
m_Semaphore.Close(); // close our network session if it is open
m_Semaphore = null;
}
statusLabel.Text = "The license is invalid or expired";
m_License.InitializeNetworkLicenseStatusEntries(m_LastLicenseValidationResult, sampleLicensingGui, m_Semaphore);
return(false);
}
else
{
if (m_Semaphore == null)
{
m_Semaphore = new NetworkSemaphore(Path.GetDirectoryName(LicenseConfiguration.LicenseFilePath), LicenseConfiguration.NetworkSemaphorePrefix, m_License.LicenseCounter, true, 15, true);
m_Semaphore.Invalid += new NetworkSemaphore.InvalidEventHandler(InvalidSemaphoreHandler);
if (!m_Semaphore.Open() && m_Semaphore.LastError.ErrorNumber == LicenseError.ERROR_NETWORK_LICENSE_FULL) // try to open a network session
{
using (NetworkLicenseSearchForm searchDialog = new NetworkLicenseSearchForm(m_Semaphore))
{
if (searchDialog.ShowDialog() != DialogResult.OK)
{
statusLabel.Text = m_License.GenerateLicenseStatusString(m_LastLicenseValidationResult) + "No Seats Available.";
m_License.InitializeLicenseStatusEntries(m_LastLicenseValidationResult, sampleLicensingGui);
sampleLicensingGui.LicenseStatusEntries.Add(new LicenseStatusEntry(LicenseStatusIcon.Information, "Network Seats", "No Seats Available"));
m_Semaphore = null;
}
}
}
else if (m_Semaphore.LastError.ErrorNumber != LicenseError.ERROR_NONE)
{
statusLabel.Text = "Status: Unable to establish a network session. " + m_Semaphore.LastError;
statusLabel.Text += "\nUsers: N/A";
m_Semaphore = null;
}
else
{
statusLabel.Text = m_License.GenerateNetworkLicenseStatusString(m_LastLicenseValidationResult, m_Semaphore);
m_License.InitializeNetworkLicenseStatusEntries(m_LastLicenseValidationResult, sampleLicensingGui, m_Semaphore);
}
return(false);
}
if (m_Semaphore != null && m_Semaphore.IsValid)
{
statusLabel.Text = m_License.GenerateNetworkLicenseStatusString(m_LastLicenseValidationResult, m_Semaphore);
m_License.InitializeNetworkLicenseStatusEntries(m_LastLicenseValidationResult, sampleLicensingGui, m_Semaphore);
}
return(true);
}
}