private void ChangePassword(string oldPassword, string newPassword) { try { Client.ChangeClientPassword(Username, oldPassword, newPassword); MessageBox.Show("Password changed successfuly", "Notice", MessageBoxButton.OK, MessageBoxImage.Information); } catch (FaultException <UserFaultException> ex) { MessageBox.Show(ex.Detail.Message, "Error!", MessageBoxButton.OK, MessageBoxImage.Error); } }