private void cmdOK_Click(object sender, EventArgs e)
{
if (!ProductKey.IsValidKey(txtProductKey.Text, txtID.Text))
{
MessageBox.Show("Invalid Product Key.", "Invalid");
return;
}
else
{
ProductKey pk = new ProductKey(txtProductKey.Text, txtID.Text);
String failmessage = "(Unspecified reason)";
if (additionalchecker != null)
{
if (!String.IsNullOrEmpty(failmessage = additionalchecker(pk)))
{
MessageBox.Show("Invalid Product Key - " + failmessage, "Invalid");
return;
}
}
//save the productkey.
pk.Register(_ProductName);
constructedPK = pk;
Close();
}
}
/// <summary>
/// Determines if this Product Key is valid for the given machineID.
/// </summary>
/// <param name="ProductKey">Product Key to test</param>
/// <returns>true if key given is valid for the given MachineID; false otherwise.</returns>
public static bool IsValidKey(String ProductKey, String MachineID)
{
//simply try to construct a FeatureLicenseData Object. it will throw an exception
//from it's constructor if the given values aren't valid.
try
{
ProductKey fld = new ProductKey(ProductKey, MachineID);
return(true);
}
catch (Exception)
{
return(false);
}
}
/// <summary>
/// retrieves the ProductKey for the given product from the registry.
/// </summary>
/// <param name="ProductName">Name of product to retrieve.</param>
/// <returns>the ProductKey Object for the given product, or null if the application is not registered.</returns>
public static ProductKey GetRegisteredProduct(String ProductName, String IDString)
{
//step one, get the ProductCode.
try
{
RegistryKey rk = Registry.CurrentUser.CreateSubKey(Licensingregkey);
RegistryKey appkey = rk.CreateSubKey(ProductName);
String getcode = (String)appkey.GetValue("Key");
String getID = (String)appkey.GetValue("ID");
ProductKey retrievekey = new ProductKey(getcode, getID);
return(retrievekey);
}
catch (Exception exx)
{
return(null);
}
}
/// <summary>
/// GetProductInformation: retrieves the product information from the registry. Or, if request is true, will
/// show the registration dialog and request the information for a key.
/// </summary>
/// <param name="AppName">Name of Application. This will be used for looking up the Application name, and should match a previous call to Register.</param>
/// <param name="AdditionalCheck">Additional Function to perform further checks.</param>
/// <param name="request">whether to show the dialog and request product key information if there is none accessible.</param>
/// <param name="ownerwindow">Owner window for any dialogs.</param>
/// <returns>a ProductKey Object representing valid ProductKey information for the given product if successful. null if the request dialog is cancelled or if request is false and
/// no information is found for the given product.</returns>
/// <remarks>This function will also call Register() if request is true and it needs to show the dialog.</remarks>
public static ProductKey GetProductInformation(String AppName, frmProductReg.AdditionalValidCheckFunction AdditionalCheck, bool request, IWin32Window ownerwindow, String IDString)
{
ProductKey pk = GetRegisteredProduct(AppName, IDString);
if (pk == null && request)
{
if (String.IsNullOrEmpty(IDString))
{
IDString = ProductKey.getLocalMachineID();
}
//if request is enabled, we need to show the dialog.
frmProductReg regdialog = new frmProductReg(AppName, AdditionalCheck, IDString);
if (regdialog.ShowDialog() == DialogResult.Cancel)
{
return(null);
}
//otherwise, return the result.
return(regdialog.constructedPK);
}
return(pk);
}
private String EnsureProductRoutine(ProductKey pk)
{
return(pk.Product == ProductType ? "" : "Product Key not for this Product");
}