// Windows.Media.Ocr: language availability decided by OS admin, not the developer
// Returns null on any machine without the language pack installed
var engine = OcrEngine.TryCreateFromLanguage(
    new Windows.Globalization.Language("ja-JP"));

if (engine == null)
    throw new InvalidOperationException(
        "Japanese OCR unavailable — install the Japanese language pack in Windows Settings.");
// 아니요 recovery path. 아니요 bundled model. 아니요 fallback.

// Windows.Media.Ocr: language availability decided by OS admin, not the developer
// Returns null on any machine without the language pack installed
var engine = OcrEngine.TryCreateFromLanguage(
    new Windows.Globalization.Language("ja-JP"));

if (engine == null)
    throw new InvalidOperationException(
        "Japanese OCR unavailable — install the Japanese language pack in Windows Settings.");
// 아니요 recovery path. 아니요 bundled model. 아니요 fallback.

// IronOCR: language availability is a NuGet package, not an OS configuration
// dotnet add package IronOcr.Languages.Japanese
var ocr = new IronTesseract();
ocr.Language = OcrLanguage.Japanese;
var result = ocr.Read("invoice.jpg"); // Works on any OS, any machine
Console.WriteLine(result.Text);

// IronOCR: language availability is a NuGet package, not an OS configuration
// dotnet add package IronOcr.Languages.Japanese
var ocr = new IronTesseract();
ocr.Language = OcrLanguage.Japanese;
var result = ocr.Read("invoice.jpg"); // Works on any OS, any machine
Console.WriteLine(result.Text);

# Audit all files referencing Windows OCR namespaces
grep -r "Windows.Media.Ocr\|Windows.Graphics.Imaging\|Windows.Storage" --include="*.cs" .

# Audit all files referencing Windows OCR namespaces
grep -r "Windows.Media.Ocr\|Windows.Graphics.Imaging\|Windows.Storage" --include="*.cs" .

// Before (Windows.Media.Ocr)
using Windows.Media.Ocr;
using Windows.Graphics.Imaging;
using Windows.Storage;
using Windows.Globalization;

// After (IronOCR)
using IronOcr;

// Before (Windows.Media.Ocr)
using Windows.Media.Ocr;
using Windows.Graphics.Imaging;
using Windows.Storage;
using Windows.Globalization;

// After (IronOCR)
using IronOcr;

// Windows.Media.Ocr: full async chain required per document
// Requires net8.0-windows10.0.19041.0 TFM — cannot deploy to Linux workers
public async Task<List<string>> ProcessQueueAsync(IEnumerable<string> imagePaths)
{
    var engine = OcrEngine.TryCreateFromUserProfileLanguages();
    if (engine == null)
        throw new InvalidOperationException("No OCR language pack installed on this machine.");

    var results = new List<string>();

    foreach (var path in imagePaths)
    {
        // Each document: 4 async steps before RecognizeAsync
        var file = await StorageFile.GetFileFromPathAsync(path);
        using var stream = await file.OpenAsync(FileAccessMode.Read);
        var decoder = await BitmapDecoder.CreateAsync(stream);
        var bitmap = await decoder.GetSoftwareBitmapAsync();

        var ocrResult = await engine.RecognizeAsync(bitmap);
        results.Add(ocrResult.Text);

        bitmap.Dispose();
    }

    return results;
}

// Windows.Media.Ocr: full async chain required per document
// Requires net8.0-windows10.0.19041.0 TFM — cannot deploy to Linux workers
public async Task<List<string>> ProcessQueueAsync(IEnumerable<string> imagePaths)
{
    var engine = OcrEngine.TryCreateFromUserProfileLanguages();
    if (engine == null)
        throw new InvalidOperationException("No OCR language pack installed on this machine.");

    var results = new List<string>();

    foreach (var path in imagePaths)
    {
        // Each document: 4 async steps before RecognizeAsync
        var file = await StorageFile.GetFileFromPathAsync(path);
        using var stream = await file.OpenAsync(FileAccessMode.Read);
        var decoder = await BitmapDecoder.CreateAsync(stream);
        var bitmap = await decoder.GetSoftwareBitmapAsync();

        var ocrResult = await engine.RecognizeAsync(bitmap);
        results.Add(ocrResult.Text);

        bitmap.Dispose();
    }

    return results;
}

// IronOCR: one call per document, no WinRT, no SoftwareBitmap, no null checks
// Runs on Windows, Linux, macOS, Docker — same binary, no TFM change
public List<string> ProcessQueue(IEnumerable<string> imagePaths)
{
    var results = new List<string>();

    foreach (var path in imagePaths)
    {
        var result = new IronTesseract().Read(path);
        results.Add(result.Text);
    }

    return results;
}

// IronOCR: one call per document, no WinRT, no SoftwareBitmap, no null checks
// Runs on Windows, Linux, macOS, Docker — same binary, no TFM change
public List<string> ProcessQueue(IEnumerable<string> imagePaths)
{
    var results = new List<string>();

    foreach (var path in imagePaths)
    {
        var result = new IronTesseract().Read(path);
        results.Add(result.Text);
    }

    return results;
}

// Windows.Media.Ocr: byte array must travel through WinRT stream → BitmapDecoder → SoftwareBitmap
public async Task<string> RecognizeFromBytesAsync(byte[] imageBytes)
{
    var engine = OcrEngine.TryCreateFromUserProfileLanguages();
    if (engine == null)
        throw new InvalidOperationException("No OCR language available.");

    // Copy byte array into InMemoryRandomAccessStream (WinRT type)
    using var ras = new Windows.Storage.Streams.InMemoryRandomAccessStream();
    using var writer = new Windows.Storage.Streams.DataWriter(ras);
    writer.WriteBytes(imageBytes);
    await writer.StoreAsync();
    ras.Seek(0);

    var decoder = await BitmapDecoder.CreateAsync(ras);
    var bitmap = await decoder.GetSoftwareBitmapAsync();

    var result = await engine.RecognizeAsync(bitmap);
    bitmap.Dispose();
    return result.Text;
}

// Windows.Media.Ocr: byte array must travel through WinRT stream → BitmapDecoder → SoftwareBitmap
public async Task<string> RecognizeFromBytesAsync(byte[] imageBytes)
{
    var engine = OcrEngine.TryCreateFromUserProfileLanguages();
    if (engine == null)
        throw new InvalidOperationException("No OCR language available.");

    // Copy byte array into InMemoryRandomAccessStream (WinRT type)
    using var ras = new Windows.Storage.Streams.InMemoryRandomAccessStream();
    using var writer = new Windows.Storage.Streams.DataWriter(ras);
    writer.WriteBytes(imageBytes);
    await writer.StoreAsync();
    ras.Seek(0);

    var decoder = await BitmapDecoder.CreateAsync(ras);
    var bitmap = await decoder.GetSoftwareBitmapAsync();

    var result = await engine.RecognizeAsync(bitmap);
    bitmap.Dispose();
    return result.Text;
}

// IronOCR: byte array loads directly into OcrInput — no conversion, no WinRT types
public string RecognizeFromBytes(byte[] imageBytes)
{
    using var input = new OcrInput();
    input.LoadImage(imageBytes); // direct byte array load

    var result = new IronTesseract().Read(input);
    return result.Text;
}

// IronOCR: byte array loads directly into OcrInput — no conversion, no WinRT types
public string RecognizeFromBytes(byte[] imageBytes)
{
    using var input = new OcrInput();
    input.LoadImage(imageBytes); // direct byte array load

    var result = new IronTesseract().Read(input);
    return result.Text;
}

// Windows.Media.Ocr: one language per engine, no simultaneous multi-language support
// Each language requires a separate language pack installed on the machine
public async Task<string> RecognizeMultiLanguageAsync(SoftwareBitmap bitmap)
{
    // Must pick ONE language — no simultaneous recognition
    var engine = OcrEngine.TryCreateFromLanguage(
        new Windows.Globalization.Language("en-US"));
    if (engine == null)
        throw new InvalidOperationException("English language pack not installed.");

    // French and German text on the same document will be misrecognized
    var result = await engine.RecognizeAsync(bitmap);
    return result.Text;
}

// Windows.Media.Ocr: one language per engine, no simultaneous multi-language support
// Each language requires a separate language pack installed on the machine
public async Task<string> RecognizeMultiLanguageAsync(SoftwareBitmap bitmap)
{
    // Must pick ONE language — no simultaneous recognition
    var engine = OcrEngine.TryCreateFromLanguage(
        new Windows.Globalization.Language("en-US"));
    if (engine == null)
        throw new InvalidOperationException("English language pack not installed.");

    // French and German text on the same document will be misrecognized
    var result = await engine.RecognizeAsync(bitmap);
    return result.Text;
}

// IronOCR: simultaneous multi-language recognition in a single pass
// Language packs are NuGet packages — no OS coordination required
// dotnet add package IronOcr.Languages.French
// dotnet add package IronOcr.Languages.German
public string RecognizeMultiLanguage(string documentPath)
{
    var ocr = new IronTesseract();
    ocr.Language = OcrLanguage.English + OcrLanguage.French + OcrLanguage.German;

    var result = ocr.Read(documentPath);

    // Structured output: walk paragraphs with location data
    foreach (var page in result.Pages)
    {
        foreach (var paragraph in page.Paragraphs)
        {
            Console.WriteLine($"[{paragraph.X},{paragraph.Y}] {paragraph.Text}");
        }
    }

    return result.Text;
}

// IronOCR: simultaneous multi-language recognition in a single pass
// Language packs are NuGet packages — no OS coordination required
// dotnet add package IronOcr.Languages.French
// dotnet add package IronOcr.Languages.German
public string RecognizeMultiLanguage(string documentPath)
{
    var ocr = new IronTesseract();
    ocr.Language = OcrLanguage.English + OcrLanguage.French + OcrLanguage.German;

    var result = ocr.Read(documentPath);

    // Structured output: walk paragraphs with location data
    foreach (var page in result.Pages)
    {
        foreach (var paragraph in page.Paragraphs)
        {
            Console.WriteLine($"[{paragraph.X},{paragraph.Y}] {paragraph.Text}");
        }
    }

    return result.Text;
}

// Windows.Media.Ocr: cannot run on Linux, Docker, or Azure Functions on Linux
// UWP/WinRT assumptions about thread context cause failures in ASP.NET pipelines
// The entire approach below is non-deployable outside Windows with Desktop Experience

[HttpPost("ocr")]
public async Task<IActionResult> RecognizeDocument(IFormFile file)
{
    // WinRT requires STA thread context in some scenarios — not guaranteed in ASP.NET
    // Cannot deploy this controller to a Linux App Service plan
    using var stream = file.OpenReadStream();
    // InMemoryRandomAccessStream is a WinRT type — does not exist on Linux
    // var ras = new InMemoryRandomAccessStream(); // compile error on net8.0 TFM
    return StatusCode(503, "Windows-only — cannot deploy cross-platform.");
}

// Windows.Media.Ocr: cannot run on Linux, Docker, or Azure Functions on Linux
// UWP/WinRT assumptions about thread context cause failures in ASP.NET pipelines
// The entire approach below is non-deployable outside Windows with Desktop Experience

[HttpPost("ocr")]
public async Task<IActionResult> RecognizeDocument(IFormFile file)
{
    // WinRT requires STA thread context in some scenarios — not guaranteed in ASP.NET
    // Cannot deploy this controller to a Linux App Service plan
    using var stream = file.OpenReadStream();
    // InMemoryRandomAccessStream is a WinRT type — does not exist on Linux
    // var ras = new InMemoryRandomAccessStream(); // compile error on net8.0 TFM
    return StatusCode(503, "Windows-only — cannot deploy cross-platform.");
}

// IronOCR: ASP.NET Core controller running on Linux, Docker, or Windows — same code
[HttpPost("ocr")]
public async Task<IActionResult> RecognizeDocument(IFormFile file)
{
    if (file == null || file.Length == 0)
        return BadRequest("No file provided.");

    using var memoryStream = new MemoryStream();
    await file.CopyToAsync(memoryStream);
    var imageBytes = memoryStream.ToArray();

    using var input = new OcrInput();
    input.LoadImage(imageBytes);
    input.Deskew();   // straighten uploaded scans automatically
    input.DeNoise();  // remove mobile camera noise

    var result = new IronTesseract().Read(input);

    return Ok(new
    {
        Text = result.Text,
        Confidence = result.Confidence,
        Pages = result.Pages.Count
    });
}

// IronOCR: ASP.NET Core controller running on Linux, Docker, or Windows — same code
[HttpPost("ocr")]
public async Task<IActionResult> RecognizeDocument(IFormFile file)
{
    if (file == null || file.Length == 0)
        return BadRequest("No file provided.");

    using var memoryStream = new MemoryStream();
    await file.CopyToAsync(memoryStream);
    var imageBytes = memoryStream.ToArray();

    using var input = new OcrInput();
    input.LoadImage(imageBytes);
    input.Deskew();   // straighten uploaded scans automatically
    input.DeNoise();  // remove mobile camera noise

    var result = new IronTesseract().Read(input);

    return Ok(new
    {
        Text = result.Text,
        Confidence = result.Confidence,
        Pages = result.Pages.Count
    });
}

// Windows.Media.Ocr: plain text output only
// Searchable PDF requires external PDF library + manual text layer construction
public async Task<string> GetTextOnlyAsync(SoftwareBitmap bitmap)
{
    var engine = OcrEngine.TryCreateFromUserProfileLanguages();
    if (engine == null)
        throw new InvalidOperationException("No OCR language available.");

    var result = await engine.RecognizeAsync(bitmap);

    // result.Text is all you get
    // Producing a searchable PDF requires an entirely separate library
    return result.Text;
}

// Windows.Media.Ocr: plain text output only
// Searchable PDF requires external PDF library + manual text layer construction
public async Task<string> GetTextOnlyAsync(SoftwareBitmap bitmap)
{
    var engine = OcrEngine.TryCreateFromUserProfileLanguages();
    if (engine == null)
        throw new InvalidOperationException("No OCR language available.");

    var result = await engine.RecognizeAsync(bitmap);

    // result.Text is all you get
    // Producing a searchable PDF requires an entirely separate library
    return result.Text;
}

// IronOCR: searchable PDF output is one method call on OcrResult
public void ProcessScannedArchive(IEnumerable<string> pdfPaths, string outputDirectory)
{
    foreach (var sourcePdf in pdfPaths)
    {
        var ocr = new IronTesseract();

        using var input = new OcrInput();
        input.LoadPdf(sourcePdf);   // native PDF input — no external renderer
        input.Deskew();             // correct scan misalignment per page
        input.DeNoise();            // remove scanner speckle

        var result = ocr.Read(input);

        var outputFileName = Path.Combine(
            outputDirectory,
            Path.GetFileNameWithoutExtension(sourcePdf) + "-searchable.pdf");

        result.SaveAsSearchablePdf(outputFileName);

        Console.WriteLine($"Processed: {sourcePdf} → {outputFileName} " +
                          $"({result.Pages.Count} pages, {result.Confidence:F1}% confidence)");
    }
}

// IronOCR: searchable PDF output is one method call on OcrResult
public void ProcessScannedArchive(IEnumerable<string> pdfPaths, string outputDirectory)
{
    foreach (var sourcePdf in pdfPaths)
    {
        var ocr = new IronTesseract();

        using var input = new OcrInput();
        input.LoadPdf(sourcePdf);   // native PDF input — no external renderer
        input.Deskew();             // correct scan misalignment per page
        input.DeNoise();            // remove scanner speckle

        var result = ocr.Read(input);

        var outputFileName = Path.Combine(
            outputDirectory,
            Path.GetFileNameWithoutExtension(sourcePdf) + "-searchable.pdf");

        result.SaveAsSearchablePdf(outputFileName);

        Console.WriteLine($"Processed: {sourcePdf} → {outputFileName} " +
                          $"({result.Pages.Count} pages, {result.Confidence:F1}% confidence)");
    }
}

// Windows.Media.Ocr: line-level geometry, no paragraph grouping, no confidence scores
public async Task<List<string>> ExtractLineTextAsync(SoftwareBitmap bitmap)
{
    var engine = OcrEngine.TryCreateFromUserProfileLanguages();
    if (engine == null)
        throw new InvalidOperationException("No OCR language available.");

    var result = await engine.RecognizeAsync(bitmap);

    var lineTexts = new List<string>();
    foreach (var line in result.Lines)
    {
        // Line text + word bounding rects — no paragraph grouping, no confidence
        lineTexts.Add(line.Text);
    }
    return lineTexts;
}

// Windows.Media.Ocr: line-level geometry, no paragraph grouping, no confidence scores
public async Task<List<string>> ExtractLineTextAsync(SoftwareBitmap bitmap)
{
    var engine = OcrEngine.TryCreateFromUserProfileLanguages();
    if (engine == null)
        throw new InvalidOperationException("No OCR language available.");

    var result = await engine.RecognizeAsync(bitmap);

    var lineTexts = new List<string>();
    foreach (var line in result.Lines)
    {
        // Line text + word bounding rects — no paragraph grouping, no confidence
        lineTexts.Add(line.Text);
    }
    return lineTexts;
}

// IronOCR: full hierarchy — pages, paragraphs, lines, words, characters
// Each element carries coordinates and confidence for downstream validation
public void ExtractStructuredData(string documentPath)
{
    var result = new IronTesseract().Read(documentPath);

    Console.WriteLine($"Overall confidence: {result.Confidence:F1}%");

    foreach (var page in result.Pages)
    {
        Console.WriteLine($"\n--- Page {page.PageNumber} ---");

        foreach (var paragraph in page.Paragraphs)
        {
            Console.WriteLine($"Paragraph at ({paragraph.X},{paragraph.Y}): {paragraph.Text}");

            // Filter words below confidence threshold for validation workflows
            var lowConfidence = paragraph.Words
                .Where(w => w.Confidence < 70)
                .ToList();

            if (lowConfidence.Any())
            {
                Console.WriteLine($"  Low-confidence words: " +
                    string.Join(", ", lowConfidence.Select(w => $"'{w.Text}' ({w.Confidence:F0}%)")));
            }
        }
    }
}

// IronOCR: full hierarchy — pages, paragraphs, lines, words, characters
// Each element carries coordinates and confidence for downstream validation
public void ExtractStructuredData(string documentPath)
{
    var result = new IronTesseract().Read(documentPath);

    Console.WriteLine($"Overall confidence: {result.Confidence:F1}%");

    foreach (var page in result.Pages)
    {
        Console.WriteLine($"\n--- Page {page.PageNumber} ---");

        foreach (var paragraph in page.Paragraphs)
        {
            Console.WriteLine($"Paragraph at ({paragraph.X},{paragraph.Y}): {paragraph.Text}");

            // Filter words below confidence threshold for validation workflows
            var lowConfidence = paragraph.Words
                .Where(w => w.Confidence < 70)
                .ToList();

            if (lowConfidence.Any())
            {
                Console.WriteLine($"  Low-confidence words: " +
                    string.Join(", ", lowConfidence.Select(w => $"'{w.Text}' ({w.Confidence:F0}%)")));
            }
        }
    }
}

# Find remaining WinRT API usage before removing the Windows TFM
grep -r "Windows\." --include="*.cs" .
grep -r "WinRT\|IAsyncOperation\|StorageFile\|SoftwareBitmap" --include="*.cs" .

# Find remaining WinRT API usage before removing the Windows TFM
grep -r "Windows\." --include="*.cs" .
grep -r "WinRT\|IAsyncOperation\|StorageFile\|SoftwareBitmap" --include="*.cs" .

<!-- Before -->
<TargetFramework>net8.0-windows10.0.19041.0</TargetFramework>

<!-- After -->
<TargetFramework>net8.0</TargetFramework>

<!-- Before -->
<TargetFramework>net8.0-windows10.0.19041.0</TargetFramework>

<!-- After -->
<TargetFramework>net8.0</TargetFramework>

// Before: null-check pattern
var engine = OcrEngine.TryCreateFromUserProfileLanguages();
if (engine == null)
    throw new InvalidOperationException("OCR unavailable.");

// After: no null — IronTesseract throws if misconfigured
try
{
    var result = new IronTesseract().Read("document.jpg");
}
catch (IronOcr.Exceptions.OcrException ex)
{
    // structured exception with diagnostic message
    logger.LogError("OCR failed: {Message}", ex.Message);
}

// Before: null-check pattern
var engine = OcrEngine.TryCreateFromUserProfileLanguages();
if (engine == null)
    throw new InvalidOperationException("OCR unavailable.");

// After: no null — IronTesseract throws if misconfigured
try
{
    var result = new IronTesseract().Read("document.jpg");
}
catch (IronOcr.Exceptions.OcrException ex)
{
    // structured exception with diagnostic message
    logger.LogError("OCR failed: {Message}", ex.Message);
}

// Before: SoftwareBitmap parameter — cannot compile cross-platform
public async Task<string> RecognizeAsync(SoftwareBitmap bitmap) { ... }

// After: byte array parameter — compiles on all platforms
public string Recognize(byte[] imageBytes)
{
    using var input = new OcrInput();
    input.LoadImage(imageBytes);
    return new IronTesseract().Read(input).Text;
}

// Before: SoftwareBitmap parameter — cannot compile cross-platform
public async Task<string> RecognizeAsync(SoftwareBitmap bitmap) { ... }

// After: byte array parameter — compiles on all platforms
public string Recognize(byte[] imageBytes)
{
    using var input = new OcrInput();
    input.LoadImage(imageBytes);
    return new IronTesseract().Read(input).Text;
}

// Option A: wrap synchronous call in Task.Run for async callers
public async Task<string> RecognizeAsync(string imagePath)
{
    return await Task.Run(() => new IronTesseract().Read(imagePath).Text);
}

// Option B:IronOCR async path
// See: https://ironsoftware.com/csharp/ocr/how-to/async/

// Option A: wrap synchronous call in Task.Run for async callers
public async Task<string> RecognizeAsync(string imagePath)
{
    return await Task.Run(() => new IronTesseract().Read(imagePath).Text);
}

// Option B:IronOCR async path
// See: https://ironsoftware.com/csharp/ocr/how-to/async/

// Before: BCP-47 string tags
var engine = OcrEngine.TryCreateFromLanguage(
    new Windows.Globalization.Language("fr-FR"));

// After: OcrLanguage enum
var ocr = new IronTesseract();
ocr.Language = OcrLanguage.French;
// Also: OcrLanguage.German, OcrLanguage.Japanese, OcrLanguage.Arabic, etc.

// Before: BCP-47 string tags
var engine = OcrEngine.TryCreateFromLanguage(
    new Windows.Globalization.Language("fr-FR"));

// After: OcrLanguage enum
var ocr = new IronTesseract();
ocr.Language = OcrLanguage.French;
// Also: OcrLanguage.German, OcrLanguage.Japanese, OcrLanguage.Arabic, etc.

// Before: WinRT file access
using var stream = await file.OpenAsync(FileAccessMode.Read);

// After: standard .NET
var imageBytes = File.ReadAllBytes(imagePath);
using var input = new OcrInput();
input.LoadImage(imageBytes);

// Before: WinRT file access
using var stream = await file.OpenAsync(FileAccessMode.Read);

// After: standard .NET
var imageBytes = File.ReadAllBytes(imagePath);
using var input = new OcrInput();
input.LoadImage(imageBytes);

# Find all Windows OCR namespace usages
grep -rn "using Windows.Media.Ocr" --include="*.cs" .
grep -rn "using Windows.Graphics.Imaging" --include="*.cs" .
grep -rn "using Windows.Storage" --include="*.cs" .
grep -rn "using Windows.Globalization" --include="*.cs" .

# Find WinRT type usages
grep -rn "OcrEngine\|SoftwareBitmap\|BitmapDecoder\|StorageFile" --include="*.cs" .
grep -rn "TryCreateFromLanguage\|TryCreateFromUserProfileLanguages\|RecognizeAsync" --include="*.cs" .
grep -rn "InMemoryRandomAccessStream\|DataWriter\|FileAccessMode" --include="*.cs" .

# Find project files with Windows TFM
grep -rn "net.*-windows" --include="*.csproj" .

# Count files requiring changes
grep -rl "Windows.Media.Ocr\|Windows.Graphics.Imaging\|SoftwareBitmap" --include="*.cs" . | wc -l

# Find all Windows OCR namespace usages
grep -rn "using Windows.Media.Ocr" --include="*.cs" .
grep -rn "using Windows.Graphics.Imaging" --include="*.cs" .
grep -rn "using Windows.Storage" --include="*.cs" .
grep -rn "using Windows.Globalization" --include="*.cs" .

# Find WinRT type usages
grep -rn "OcrEngine\|SoftwareBitmap\|BitmapDecoder\|StorageFile" --include="*.cs" .
grep -rn "TryCreateFromLanguage\|TryCreateFromUserProfileLanguages\|RecognizeAsync" --include="*.cs" .
grep -rn "InMemoryRandomAccessStream\|DataWriter\|FileAccessMode" --include="*.cs" .

# Find project files with Windows TFM
grep -rn "net.*-windows" --include="*.csproj" .

# Count files requiring changes
grep -rl "Windows.Media.Ocr\|Windows.Graphics.Imaging\|SoftwareBitmap" --include="*.cs" . | wc -l