ImageTypeToExtension

FileFormatUtil.ImageTypeToExtension method

Converts an Aspose.Words image type enumerated value into a file extension. The returned extension is a lower-case string with a leading dot.

public static string ImageTypeToExtension(ImageType imageType)

Exceptions

exceptioncondition
ArgumentExceptionThrows when cannot convert.

Examples

Shows how to extract images from a document, and save them to the local file system as individual files.

Document doc = new Document(MyDir + "Images.docx");

// Get the collection of shapes from the document,
// and save the image data of every shape with an image as a file to the local file system.
NodeCollection shapes = doc.GetChildNodes(NodeType.Shape, true);

Assert.AreEqual(9, shapes.Count(s => ((Shape)s).HasImage));

int imageIndex = 0;
foreach (Shape shape in shapes.OfType<Shape>())
{
    if (shape.HasImage)
    {
        // The image data of shapes may contain images of many possible image formats. 
        // We can determine a file extension for each image automatically, based on its format.
        string imageFileName =
            $"File.ExtractImages.{imageIndex}{FileFormatUtil.ImageTypeToExtension(shape.ImageData.ImageType)}";
        shape.ImageData.Save(ArtifactsDir + imageFileName);
        imageIndex++;
    }
}

See Also