Atur teks alternatif untuk Gambar

Potongan kode berikut juga bekerja dengan pustaka Aspose.PDF.Drawing.

Kelas XImage berisi metode GetAlternativeText dan TrySetAlternativeText, yang memungkinkan Anda untuk mendapatkan dan mengatur teks alternatif yang sesuai dengan gambar.

Potongan kode berikut menunjukkan cara menggunakan metode ini untuk mengatur teks alternatif untuk gambar dalam file PDF dan mendapatkannya.

.NET Core 3.1

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void GetSetAlternativeTextForImage()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Images();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "SearchAndGetImages.pdf"))
    {
        // Alternative text to be given to the image 
        string altText = "Alternative text for image";

        // Image for which alternative text will be set and get
        XImage xImage = document.Pages[1].Resources.Images[1];

        // Try to set alternative text for an image
        bool result = xImage.TrySetAlternativeText(altText, document.Pages[1]);

        // If set is successful, then get the alternative text for the image
        if (result)
        {
            List<string> altTexts = xImage.GetAlternativeText(document.Pages[1]);
        }

        // Save PDF document
        document.Save(dataDir + "SearchAndGetImagesWithAltText_out.pdf");
    }
}

.NET 8

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void GetSetAlternativeTextForImage()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Images();

    // Open PDF document
    using var document = new Aspose.Pdf.Document(dataDir + "SearchAndGetImages.pdf");

    // Alternative text to be given to the image 
    string altText = "Alternative text for image";

    // Image for which alternative text will be set and get
    XImage xImage = document.Pages[1].Resources.Images[1];

    // Try to set alternative text for an image
    bool result = xImage.TrySetAlternativeText(altText, document.Pages[1]);

    // If set is successful, then get the alternative text for the image
    if (result)
    {
        List<string> altTexts = xImage.GetAlternativeText(document.Pages[1]);
    }

    // Save PDF document
    document.Save(dataDir + "SearchAndGetImagesWithAltText_out.pdf");    
}