---
source_files:
  - Common/DTS.Common/Interface/SystemSettings/DB/IDBImportView.cs
  - Common/DTS.Common/Interface/SystemSettings/DB/IDBExportView.cs
  - Common/DTS.Common/Interface/SystemSettings/DB/IDBViewModel.cs
generated_at: "2026-04-17T16:35:54.942184+00:00"
model: "zai-org/GLM-5-FP8"
schema_version: 1
sha256: "9116b3acac6aeb65"
---

# Documentation: DB Import/Export Interfaces

## 1. Purpose

This module defines a set of interfaces for database import and export functionality within the system settings context. It provides an abstraction layer for view models handling file-based data transfer operations, specifically supporting XML-formatted import/export workflows. The interfaces `IDBImportView` and `IDBExportView` serve as view contracts, while `IDBViewModel` orchestrates the data flow between import/export operations and their associated views.

---

## 2. Public Interface

### `IDBImportView`
**Namespace:** `DTS.Common.Interface`  
**Inherits:** `IBaseView`

A marker interface with no members. Used to identify views responsible for import functionality.

---

### `IDBExportView`
**Namespace:** `DTS.Common.Interface`  
**Inherits:** `IBaseView`

A marker interface with no members. Used to identify views responsible for export functionality.

---

### `IDBViewModel`
**Namespace:** `DTS.Common.Interface`  
**Inherits:** `IBaseViewModel`

Defines the contract for a view model that manages database import and export operations.

**Properties:**

| Name | Type | Access | Description |
|------|------|--------|-------------|
| `ImportView` | `IDBImportView` | get/set | The view instance handling import UI |
| `ExportView` | `IDBExportView` | get/set | The view instance handling export UI |
| `ImportFileName` | `string` | get/set | File path to import from |
| `ImportStatusText` | `string` | get/set | Status message for import operations |
| `ExportFileName` | `string` | get/set | File path to export to |
| `ExportData` | `string` | get/set | Formatted XML string to write to the export file |
| `ImportData` | `string` | get/set | Formatted XML string read from the import file |

**Methods:**

| Name | Return Type | Description |
|------|-------------|-------------|
| `Export()` | `void` | Exports `ExportData` to `ExportFileName` |

---

## 3. Invariants

- `IDBImportView` and `IDBExportView` must always be assignable to `IBaseView`.
- `IDBViewModel` must always be assignable to `IBaseViewModel`.
- `ExportData` and `ImportData` are expected to contain formatted XML strings (as noted in source comments).
- The `Export()` method is expected to write the contents of `ExportData` to the path specified by `ExportFileName`.

---

## 4. Dependencies

**This module depends on:**
- `DTS.Common.Base` — provides `IBaseView` and `IBaseViewModel` base interfaces.

**What depends on this module:**