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docs/ai/Common/DTS.CommonCore/Base/ViewModel.md

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+---
+source_files:
+  - Common/DTS.CommonCore/Base/ViewModel/ViewModelBase.cs
+  - Common/DTS.CommonCore/Base/ViewModel/BaseViewModel.cs
+generated_at: "2026-04-17T15:40:45.497045+00:00"
+model: "zai-org/GLM-5-FP8"
+schema_version: 1
+sha256: "72dbfa917d46895e"
+---
+
+# Documentation: DTS.Common.Base ViewModel Classes
+
+## 1. Purpose
+
+This module provides two abstract base classes for the Model-View-ViewModel (MVVM) pattern within the DTS application framework. `ViewModelBase<T>` offers a foundational implementation for ViewModels that need property change notification, error handling, and asynchronous model initialization while inheriting from WPF's `DependencyObject`. `BaseViewModel<TModel>` provides a more feature-rich base class with Prism framework integration, including command management, region navigation, event aggregation, and dependency injection support. Both classes establish a consistent contract for ViewModel lifecycle management across the codebase.
+
+---
+
+## 2. Public Interface
+
+### ViewModelBase\<T\>
+
+**Type:** `abstract class`  
+**Inheritance:** `DependencyObject`, `INotifyPropertyChanged`, `IViewModel`
+
+#### Properties
+
+| Name | Type | Access | Description |
+|------|------|--------|-------------|
+| `Model` | `object` | get/set | The Model object instance. Note: typed as `object` despite generic parameter `T`. |
+| `IsBusy` | `bool` | get/protected set | Indicates whether an asynchronous process is currently executing. |
+| `IsDirty` | `bool` | get/protected set | Indicates whether the Model has been changed. Virtual. |
+
+#### Events
+
+| Name | Type | Description |
+|------|------|-------------|
+| `ErrorOccurred` | `EventHandler<ErrorEventArgs>` | Raised when an error occurs during processing. Virtual. |
+| `PropertyChanged` | `PropertyChangedEventHandler` | Raised when a property value changes. Virtual. |
+
+#### Abstract Methods (must be implemented by derived classes)
+
+| Signature | Description |
+|-----------|-------------|
+| `protected abstract Task<T> InitializeAsync()` | Async initialization that returns the model object. Result is intended to set