public PackagePart AddImagePart(Stream imageStream, string contentType)
{
var extension = contentType.Substring(contentType.LastIndexOf("/", StringComparison.Ordinal) + 1);
var imgPartUriPath = $"/word/media/{Guid.NewGuid()}.{extension}";
var part = package.CreatePart(new Uri(imgPartUriPath, UriKind.Relative), contentType, CompressionOption.Normal);
using var partStream = new PackagePartStream(part.GetStream(FileMode.Create, FileAccess.Write));
imageStream.CopyTo(partStream);
return(part);
}
public static void SavePackagePart(PackagePart part, XDocument document)
{
using var stream = new PackagePartStream(part.GetStream(FileMode.Create, FileAccess.Write));
using TextWriter textWriter = new StreamWriter(stream);
document.Save(textWriter, SaveOptions.None);
}