private void CreateImagePart(PackagePart sourcePart, BitmapSource imageSource, string imageContentType, int imageIndex)
{
string imageName = WpfPayload.GetImageName(imageIndex, imageContentType);
Uri uri = new Uri("/Xaml" + imageName, UriKind.Relative);
PackagePart packagePart = this._package.CreatePart(uri, imageContentType, CompressionOption.NotCompressed);
PackageRelationship packageRelationship = sourcePart.CreateRelationship(uri, TargetMode.Internal, "http://schemas.microsoft.com/wpf/2005/10/xaml/component");
BitmapEncoder bitmapEncoder = WpfPayload.GetBitmapEncoder(imageContentType);
bitmapEncoder.Frames.Add(BitmapFrame.Create(imageSource));
Stream stream = packagePart.GetStream();
using (stream)
{
bitmapEncoder.Save(stream);
}
}