---
source_files:
  - DTS Viewer/DTS.Viewer.Modules/DTS.Viewer.TestModification/Resources/TranslateExtension.cs
  - DTS Viewer/DTS.Viewer.Modules/DTS.Viewer.TestModification/Resources/StringResources.Designer.cs
generated_at: "2026-04-16T11:08:29.234915+00:00"
model: "zai-org/GLM-5-FP8"
schema_version: 1
sha256: "46010437bced3eec"
---

# Documentation: DTS.Viewer.TestModification.Resources

## 1. Purpose
This module provides localization support for the `DTS.Viewer.TestModification` namespace. It consists of a strongly-typed resource wrapper class, `StringResources`, which provides compile-time access to localized strings (likely sourced from a `.resx` file), and a XAML markup extension, `TranslateExtension`, that allows WPF UI elements to bind to these localized strings declaratively.

## 2. Public Interface

### Class: `TranslateExtension`
**Namespace:** `DTS.Viewer.TestModification`
**Inheritance:** `System.Windows.Markup.MarkupExtension`

This class allows XAML bindings to retrieve localized strings using a resource key.

*   **Constructor**
    *   `public TranslateExtension(string key)`: Initializes the extension with the specific resource key to look up.
*   **Method**
    *   `public override object ProvideValue(IServiceProvider serviceProvider)`: Returns the localized string associated with the `_key`. If the key is null, empty, or not found in the resource manager, it returns an error string constant.

### Class: `StringResources`
**Namespace:** `DTS.Viewer.TestModification.Resources`
**Accessibility:** `internal`

A strongly-typed resource class auto-generated by Visual Studio. It exposes localized strings as static properties.

*   **Properties**
    *   `internal static global::System.Resources.ResourceManager ResourceManager`: Returns the cached `ResourceManager` instance responsible for retrieving resources.
    *   `internal static global::System.Globalization.CultureInfo Culture`: Gets or sets the current `CultureInfo` used for resource lookups.
*   **Resource String Properties (Static)**
    *   `string CalDate`: "Cal date"
    *   `string DataFlag`: "Data Flag:"
    *   `string Description`: "Description:"
    *   `string EUMultiplier`: "EU Multiplier:"
    *   `string EUOffset`: "EU Offset:"
    *   `string FailedToModifySensitivity`: "Failed to modify sensitivity: "
    *   `string Filter`: "Filter:"
    *   `string LineFit`: "Line Fit:"
    *   `string ModifyDate`: "Modify date"
    *   `string NonLinear`: "Non-linear"
    *   `string PleaseLockHeader`: "To enable, please lock a single channel."
    *   `string Preview`: "Preview"
    *   `string ProportionalToExcitation`: "Proportional to excitation"
    *   `string Sensitivity`: "Sensitivity:"
    *   `string SensorCalibration`: "Sensor calibration (most recent in db)"
    *   `string ShiftT0ms`: "Shift T₀ (ms):"
    *   `string T0MustBeInDataset`: "Modification can not be made, T0 must be in the dataset."
    *   `string T1ms`: "T₁ (ms):"
    *   `string T2ms`: "T₂ (ms):"
    *   `string Undo`: "Cancel"
    *   `string UndoAll`: "Restore All"
    *   `string UndoAllPrompt`: "This will revert your saved test modifications to the backup on file. Continue?"
    *   `string UndoPrompt`: "This will undo any change(s) to this channel made before saving. Continue?"
    *   `string UpdateDatabase`: "Update database"
    *   `string WriteFiles`: "Write"
    *   `string WriteFilesPrompt`: "Are you sure you want to write these changes to disk?"

## 3. Invariants
*   **Non-Null Return:** `TranslateExtension.ProvideValue` will never return `null`. It guarantees a string return, either the localized value or a specific error identifier.
*   **Error Identifier:** If a resource key is not found, the return value must contain the constant `#stringnotfound#`. If the key is null or empty, it returns exactly `#stringnotfound#`. If the key is valid but missing from resources, it returns `#stringnotfound#` followed by a space and the missing key.
*   **Auto-generation:** `StringResources` is marked with `GeneratedCodeAttribute`. Its members are strictly derived from the underlying resource source (e.g., `.resx`). Manual modifications to this file will be lost upon regeneration.

## 4. Dependencies
*   **Internal Dependencies:**
    *   `TranslateExtension` depends on `StringResources` to perform the actual string lookup via `StringResources.ResourceManager`.
*   **External Dependencies:**
    *   `System.Windows.Markup`: Required for `MarkupExtension` and `MarkupExtensionReturnTypeAttribute` (WPF specific).
    *   `System.Resources`: Required for `ResourceManager`.
    *   `System.Globalization`: Required for `CultureInfo`.

## 5. Gotchas
*   **Auto-Generated File:** `StringResources.Designer.cs` is auto-generated. Developers must edit the corresponding `.resx` file (not present in the provided source) to add or modify strings; editing this `.cs` file directly is futile as changes will be overwritten.
*   **Internal Visibility:** The `StringResources` class is `internal`. It cannot be accessed from outside the `DTS.Viewer.TestModification` assembly.
*   **Silent Failures in UI:** `TranslateExtension` does not throw exceptions for missing keys. Instead, it returns strings like `#stringnotfound# MissingKey`. This behavior aids in debugging missing translations visually in the UI but requires the developer to inspect the string content rather than catching exceptions.
*   **Static Culture:** The `StringResources.Culture` property is static. Changing it will affect all subsequent resource lookups within that assembly context, which implies the application is responsible for managing the UI culture lifecycle globally.