---
source_files:
  - DTS Viewer/DTS.Viewer.Loader/Properties/Settings.Designer.cs
  - DTS Viewer/DTS.Viewer.Loader/Properties/AssemblyInfo.cs
  - DTS Viewer/DTS.Viewer.Loader/Properties/Resources.Designer.cs
generated_at: "2026-04-16T14:06:04.504892+00:00"
model: "zai-org/GLM-5-FP8"
schema_version: 1
sha256: "c2c4643ad51e5dc7"
---

# Documentation: DTS.Viewer.Loader Properties

## 1. Purpose

This module provides configuration and resource management for the `DTS.Viewer.Loader` assembly, a component of the DTS Viewer application developed by Diversified Technical Systems, Inc. The module exists to define application-level settings—specifically the location of runtime plugin modules—and to provide strongly-typed resource access for localization. It serves as the configuration layer that enables the loader to discover and load plugins from an external directory at runtime.

---

## 2. Public Interface

### Settings (class)
**Namespace:** `DTS.Viewer.Loader.Properties`  
**Inheritance:** `global::System.Configuration.ApplicationSettingsBase`  
**Modifiers:** `internal sealed partial`

#### `Default` (static property)
```csharp
public static Settings Default { get; }
```
Returns the singleton instance of the `Settings` class, synchronized for thread-safe access. This is the primary entry point for accessing application settings.

#### `PluginFolder` (instance property)
```csharp
[ApplicationScopedSetting]
[DefaultSettingValue("../../../../RunTimeModules")]
public string PluginFolder { get; }
```
Returns the configured path to the plugin/modules directory. The default value is `"../../../../RunTimeModules"`. This is an application-scoped setting, meaning it is read-only at runtime and must be configured via application config or the settings file.

---

### Resources (class)
**Namespace:** `DTS.Viewer.Loader.Properties`  
**Modifiers:** `internal class`

#### `ResourceManager` (static property)
```csharp
[EditorBrowsable(EditorBrowsableState.Advanced)]
internal static global::System.Resources.ResourceManager ResourceManager { get; }
```
Returns the cached `ResourceManager` instance for this assembly, used for looking up localized strings and resources. The resource base name is `"DTS.Viewer.Loader.Properties.Resources"`.

#### `Culture` (static property)
```csharp
[EditorBrowsable(EditorBrowsableState.Advanced)]
internal static global::System.Globalization.CultureInfo Culture { get; set; }
```
Gets or sets the current `CultureInfo` used for resource lookups. Setting this property overrides the current thread's `CurrentUICulture` for all resource lookups via this class.

---

## 3. Invariants

- **Singleton Pattern**: The `Settings.Default` property always returns the same synchronized instance; `ApplicationSettingsBase.Synchronized` ensures thread-safe access.
- **Application-Scoped Immutability**: `PluginFolder` is decorated with `[ApplicationScopedSetting]`, meaning it cannot be changed at runtime and requires application configuration changes to modify.
- **Internal Visibility**: Both `Settings` and `Resources` classes are marked `internal`, restricting access to within the `DTS.Viewer.Loader` assembly.
- **Auto-Generated Code**: `Settings.Designer.cs` and `Resources.Designer.cs` are tool-generated; manual modifications will be overwritten upon regeneration.
- **Relative Path Dependency**: The `PluginFolder` default value uses a relative path (`"../../../../RunTimeModules"`), which is resolved relative to the application's working directory at runtime.

---

## 4. Dependencies

### This module depends on:
- `System.Configuration.ApplicationSettingsBase` — for application settings management
- `System.Resources.ResourceManager` — for resource lookup
- `System.Globalization.CultureInfo` — for localization support
- `System.Reflection` — for assembly metadata (via `AssemblyInfo.cs`)
- `System.Runtime.InteropServices` — for COM visibility attributes
- `System.Windows` — for WPF `ThemeInfo` resource dictionary location

### What depends on this module:
**Cannot be determined from source alone.** The `Settings` and `Resources` classes are internal, suggesting they are consumed by other components within the `DTS.Viewer.Loader` assembly, but the specific consumers are not present in the provided files.

---

## 5. Gotchas

- **Relative Path Fragility**: The `PluginFolder` default value (`"../../../../RunTimeModules"`) is a relative path that depends on the application's current working directory. If the application is launched from a different working directory, this path may resolve incorrectly. The actual behavior depends on how the application sets its working directory at startup.

- **Auto-Generated Files**: Both `Settings.Designer.cs` and `Resources.Designer.cs` are auto-generated by Visual Studio tools. Any manual changes will be lost when the files are regenerated. To modify settings, use the Visual Studio Settings designer or edit the `.settings` file directly.

- **Missing Resource Values**: The `Resources` class provides infrastructure for localized resources, but no actual resource keys/strings are exposed in the generated code. The presence and content of the underlying `.resx` file cannot be determined from the provided source.

- **Version Information Static**: Assembly version is fixed at `1.0.0.0` in `AssemblyInfo.cs`. Whether this is updated during build processes (e.g., via CI/CD) is not evident from the source.