Memory stream objects are not saved in DotNetZip

I am trying to create a DotNetZip zip file that will be passed to the user. Inside the zip file, I insert two memory streams. But for some reason, when I open the zip file, it is empty. I looked through the documentation and didn't find anything useful. My code:

public async Task<FileResult> DownloadFile(string fileName){

//Create image memory stream
        System.Drawing.Image image = System.Drawing.Image.FromFile(Server.MapPath("~/Images/" + fileName));
        MemoryStream msImage = new MemoryStream();
        image.Save(msImage, image.RawFormat);

//Create Word document using DocX
        MemoryStream msDoc = new MemoryStream();
        DocX doc = DocX.Create(msDoc);
        Paragraph p1 = doc.InsertParagraph();
        p1.AppendLine("Text information...");
        Paragraph p2 = doc.InsertParagraph();
        p2.AppendLine("DISCLAIMER: ...");
        doc.SaveAs(msDoc);

//Create Zip File and stream it to the user
        MemoryStream msZip = new MemoryStream();
        ZipFile zip = new ZipFile();
        msImage.Seek(0, SeekOrigin.Begin);
        msDoc.Seek(0, SeekOrigin.Begin);
        ZipEntry imageEntry = zip.AddEntry("MyImageName.jpg", msImage);
        ZipEntry docEntry = zip.AddEntry("MyWordDocName.docx", msDoc);
        zip.Save(msZip);

        image.Dispose();
        doc.Dispose();
        zip.Dispose();

        return File(msZip, System.Net.Mime.MediaTypeNames.Application.Octet, "MyZipFileName.zip");
}

      

        
        
        
      

    

I checked the size of both msImage and msDoc and they are both loaded with data, but msZip shows very little in terms of size. Not to mention, it is a blank zip file on upload. I need to know why these streams are not being added. Thanks a million!