---
source_files:
  - Common/DTS.Common/Interface/CustomerDetails/ICustomerDetailsView.cs
  - Common/DTS.Common/Interface/CustomerDetails/ICustomerDetailsViewModel.cs
generated_at: "2026-04-17T16:37:26.944473+00:00"
model: "zai-org/GLM-5-FP8"
schema_version: 1
sha256: "f962d23186cb094d"
---

# Documentation: Customer Details Interfaces

## 1. Purpose

This module defines two marker interfaces, `ICustomerDetailsView` and `ICustomerDetailsViewModel`, which establish the contract for the Customer Details feature within an MVVM (Model-View-ViewModel) architecture. These interfaces extend base view and view model abstractions (`IBaseView` and `IBaseViewModel` respectively), enabling type-safe identification and binding of customer-specific UI components without defining additional members. They serve as extension points for the customer details functionality within the broader `DTS.Common.Interface` namespace.

---

## 2. Public Interface

### `ICustomerDetailsView`
**Namespace:** `DTS.Common.Interface`  
**Inheritance:** `IBaseView`

```csharp
public interface ICustomerDetailsView : IBaseView { }
```

A marker interface representing the View component for customer details. Declares no members; all behavior is inherited from `IBaseView`. Used to identify and type-check customer details view implementations.

---

### `ICustomerDetailsViewModel`
**Namespace:** `DTS.Common.Interface`  
**Inheritance:** `IBaseViewModel`

```csharp
public interface ICustomerDetailsViewModel : IBaseViewModel { }
```

A marker interface representing the ViewModel component for customer details. Declares no members; all behavior is inherited from `IBaseViewModel`. Used to identify and type-check customer details view model implementations.

---

## 3. Invariants

- **Inheritance Contract:** Both interfaces must always inherit from their respective base types (`IBaseView` and `IBaseViewModel`). Any implementation must satisfy the contracts defined by those base interfaces.
- **Naming Convention:** The interfaces follow a naming pattern aligned with MVVM conventions (`I[Feature]View` and `I[Feature]ViewModel`).
- **Empty Interface Constraint:** Neither interface defines additional members; they rely entirely on their base interfaces for functionality. This design implies they serve as type markers rather than behavioral contracts.

---

## 4. Dependencies

### This module depends on:
- `DTS.Common.Base` — Provides `IBaseView` and `IBaseViewModel` base interfaces from which these interfaces inherit.

### What depends on this module:
**Cannot be determined from source alone.** Potential consumers would include:
- Concrete implementations of `ICustomerDetailsView` (e.g., WinForms, WPF, or web-based views)
- Concrete implementations of `ICustomerDetailsViewModel`
- Any factory or dependency injection registration code that resolves customer details components

---

## 5. Gotchas

- **Empty Interfaces:** Both `ICustomerDetailsView` and `ICustomerDetailsViewModel` define no members of their own. Developers implementing these interfaces must consult `IBaseView` and `IBaseViewModel` to understand the actual contract requirements. The purpose of these empty interfaces is unclear from source alone—they may serve as marker interfaces for DI registration, navigation systems, or feature identification.
- **Base Interface Contracts Unknown:** The actual members, properties, and methods that implementations must provide are defined in `IBaseView` and `IBaseViewModel`, which are not included in the provided source. The complete contract cannot be documented without those files.
- **Feature Scope Ambiguity:** The source does not indicate what specific customer details data or operations this feature encompasses. The scope of "Customer Details" (e.g., read-only display, editing, validation) cannot be determined from these interfaces alone.