C#OcrEngineを使用して画像内の文字列を取得する

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>net8.0-windows</TargetFramework>
    <Nullable>enable</Nullable>
    <UseWindowsForms>true</UseWindowsForms>
    <ImplicitUsings>enable</ImplicitUsings>
    <TargetFramework>net8.0-windows10.0.22621.0</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.Windows.CsWinRT" Version="2.0.7" />
  </ItemGroup>
  
</Project>

        private Bitmap MyImage;

        /// <summary>
        /// PictureBoxに画像を表示する
        /// </summary>
        /// <param name="fileToDisplay">描画する画像のファイルパス</param>
        public void ShowMyImage(String fileToDisplay)
        {
            if (MyImage != null)
            {
                MyImage.Dispose();
            }

            MyImage = new Bitmap(fileToDisplay);
            pictureBox1.Image = MyImage;
        }

        private async void buttonOCR_Click(object sender, EventArgs e)
        {
            // MemoryStreamにBitomapを保存し、SoftwareBitmapとする
            MemoryStream ms = new MemoryStream();
            MyImage.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
            IRandomAccessStream ras = ms.AsRandomAccessStream();
            BitmapDecoder bd = await BitmapDecoder.CreateAsync(ras);
            SoftwareBitmap sb = await bd.GetSoftwareBitmapAsync();

            // 言語の指定
            Windows.Globalization.Language language = new Windows.Globalization.Language("ja");
            OcrEngine ocrEngine = OcrEngine.TryCreateFromLanguage(language);

            // OCR実行
            OcrResult result = await ocrEngine.RecognizeAsync(sb);
            textBox2.Text = result.Text;
        }

            string s = "";
            foreach (var item in result.Lines)
            {
                s += item.Text + "\r\n";
            }
            textBox2.Text = s;