public AddNewLoanTransactionViewModel(MainTransactionWindowViewModel mainTransactionWindowViewModel)
{
_mainTransactionWindowViewModel = mainTransactionWindowViewModel;
}
public AddNewPaymentTransactionViewModel(MainTransactionWindowViewModel mainTransactionWindowViewModel)
{
_mainTransactionWindowViewModel = mainTransactionWindowViewModel;
LoanTransactions = _mainTransactionWindowViewModel.SelectedCustomer.LoanTransactions;
}