●
LIVE DEMO
Generated using
Instruct UI - An AI for Blazor UI Generation
## What's implemented
- Receipt stub showing store header, timestamp, order number, line items, subtotal, tax, and total.
- Payment form built with EditForm and DataAnnotations-based validation for amount and payment method.
- Amount input with InputNumber inside a Bootstrap input-group and a Change button placeholder.
- Clickable payment method cards (Cash, Card) that toggle selection and show a check icon.
- Submit button that triggers OnValidSubmit to simulate payment processing.
## Key components
- EditForm, DataAnnotationsValidator, ValidationMessage
- InputNumber with @bind-Value
- Bootstrap cards, input-group, btn, form-control classes
- Enum PaymentMethod and model PaymentModel with DataAnnotations
- Local list receiptItems and simple LINQ calculations for subtotal/tax/total
## How it works
- Models use DataAnnotations for required fields and range checks; DataAnnotationsValidator enforces validation on submit.
- InputNumber binds to paymentModel.Amount via @bind-Value; selection cards set paymentModel.PaymentMethod in @onclick handlers.
- OnValidSubmit triggers HandlePayment(EditContext) which currently logs the payment intent; OpenChangeAmountPopup is a placeholder for a modal/popup.
- Receipt totals compute on the fly from receiptItems using LINQ (Sum) and simple decimal arithmetic.
## Styling
- Uses Bootstrap layout and utility classes (container, row, col-md-6, card, btn, input-group, form-control) for responsive two-column layout.
- Receipt uses a monospace font-family ('Courier New') for a printed-receipt appearance and scrollable items area with overflow-y.
- Font Awesome icons are referenced for visual method indicators (project must include the icon CSS).
## Reuse steps
1. Add models (PaymentModel, ReceiptItemModel) to the project and import the page route (/payment).
2. Ensure Bootstrap CSS is included (Blazor templates include it by default) and add Font Awesome if icons are required.
3. Use EditForm, DataAnnotationsValidator, and ValidationMessage for client-side validation.
4. Wire actual payment processing in HandlePayment and replace OpenChangeAmountPopup with a modal component or dialog service.
5. If printing is required, add a print stylesheet or generate a printable view from the receipt markup.
6. Adjust currency, tax rate, and localization in the model or a shared service.
## Limitations & next steps
- This is a single page scaffold generated by Instruct UI; it does not integrate with a payment gateway, backend API, or authentication.
- Change Amount button and payment processing are placeholders and need modal wiring and server-side integration.
- Consider adding unit tests, server-side validation, decimal rounding policies, and secure payment SDK integration for production scenarios.