/// <summary>
/// Displays requested screen section based on received request.
/// </summary>
private void ManageScreenVisualization()
{
// Initially hide everything on all screens
LoginSection.Visibility = Visibility.Collapsed;
AccessDeniedSection.Visibility = Visibility.Collapsed;
ChangePasswordSection.Visibility = Visibility.Collapsed;
TextBlockApplicationLogin.Visibility = Visibility.Collapsed;
TextBlockAccessDenied.Visibility = Visibility.Collapsed;
TextBlockChangePassword.Visibility = Visibility.Collapsed;
// Reset all default buttons
ButtonLogin.IsDefault = false;
ButtonOK.IsDefault = false;
ButtonChange.IsDefault = false;
if (m_displayType == DisplayType.Login)
{
TextBoxPassword.Password = "";
ButtonLogin.IsDefault = true;
TextBlockApplicationLogin.Visibility = Visibility.Visible;
LoginSection.Visibility = Visibility.Visible;
if (string.IsNullOrWhiteSpace(TextBoxUserName.Text))
{
TextBoxUserName.Focus();
}
else
{
TextBoxPassword.Focus();
}
}
else if (m_displayType == DisplayType.AccessDenied)
{
ButtonOK.IsDefault = true;
TextBlockAccessDenied.Visibility = Visibility.Visible;
AccessDeniedSection.Visibility = Visibility.Visible;
}
else if (m_displayType == DisplayType.ChangePassword)
{
TextBoxOldPassword.Password = "";
TextBoxNewPassword.Password = "";
TextBoxConfirmPassword.Password = "";
ButtonChange.IsDefault = true;
TextBlockChangePassword.Visibility = Visibility.Visible;
ChangePasswordSection.Visibility = Visibility.Visible;
if (string.IsNullOrWhiteSpace(TextBoxChangePasswordUserName.Text))
{
TextBoxChangePasswordUserName.Focus();
}
else
{
TextBoxOldPassword.Focus();
}
}
}
/// <summary>
/// Attempts to change user's password.
/// </summary>
/// <param name="sender">Source of this event.</param>
/// <param name="e">Arguments of this event.</param>
private void ButtonChange_Click(object sender, RoutedEventArgs e)
{
try
{
// Check if old and new password are different
if (TextBoxOldPassword.Password == TextBoxNewPassword.Password)
{
throw new Exception("New password cannot be same as old password.");
}
// Check is new password and confirm password are same
if (TextBoxNewPassword.Password != TextBoxConfirmPassword.Password)
{
throw new Exception("New password and confirm password should be same.");
}
ISecurityProvider securityProvider = SecurityProviderCache.CreateProvider(TextBoxChangePasswordUserName.Text);
securityProvider.SecurePassword = TextBoxNewPassword.SecurePassword;
if (securityProvider.CanChangePassword)
{
// Attempt to change password
if (securityProvider.ChangePassword(TextBoxOldPassword.Password, TextBoxNewPassword.Password) &&
securityProvider.Authenticate())
{
// Password changed and authenticated successfully
DisplayErrorMessage("Password changed successfully.");
// Setup security principal for subsequent uses
SecurityIdentity securityIdentity = new SecurityIdentity(securityProvider);
SecurityPrincipal = new SecurityPrincipal(securityIdentity);
ClearErrorMessage();
ExitSuccess = true;
}
else
{
// Show why password change failed
if (!ShowFailureReason(securityProvider))
{
if (!securityProvider.IsUserAuthenticated)
{
DisplayErrorMessage("Authentication was not successful.");
}
else
{
DisplayErrorMessage("Password change was not successful.");
}
if (string.IsNullOrWhiteSpace(TextBoxChangePasswordUserName.Text))
{
TextBoxChangePasswordUserName.Focus();
}
else
{
TextBoxOldPassword.Focus();
}
}
}
}
else
{
DisplayErrorMessage("Account does not support password change.");
}
}
catch (Exception ex)
{
DisplayErrorMessage("Change password failed: " + ex.Message);
TextBoxOldPassword.Focus();
}
}