Hi All,

I'll start by explaining what I would like to achieve:

I would like to grab content from umbraco (Blog posts and comments) and store them in an XML which looks like this:

Please note: BlogPosts and Comments are separate DocumentTypes.

<BlogPosts>
  <Blog>
    <Title>This is a blog post</Title>
    <BodyText>&lt;p&gt;This is a second blog post's content&lt;/p&gt;</BodyText>
    <PublishDate>06/06/2016 00:00:00</PublishDate>
    <Author>0</Author>
    <Image>1117</Image>
    <Comments>
        <Author>John Smith</Author>
        <Comment>This is an awesome comment</Comment>
    </Comments>
  </Blog>
</BlogPosts>

This is what I have got so far:

    namespace UmbracoBlogsExportPackage.App_Code
{
    public class ExportAllBlogsController : UmbracoAuthorizedApiController
    {
        [System.Web.Http.AcceptVerbs("GET", "POST")]
        public void ExportAll()
        {
            List<BlogPosts> BlogPostList = new List<BlogPosts>();
            BlogPostList = getPostList();
            //List<BlogComment> blogCommentList = new List<BlogComment>();
            //blogCommentList = getCommentList();

            string attachment = "attachment; filename= ExpBlogPosts.xml;";
            HttpContext.Current.Response.Clear();
            HttpContext.Current.Response.ClearHeaders();
            HttpContext.Current.Response.ClearContent();
            HttpContext.Current.Response.AddHeader("Content-Disposition", attachment);
            HttpContext.Current.Response.ContentType = "text/xml";
            HttpContext.Current.Response.AddHeader("Pragma", "public");
            HttpContext.Current.Response.CacheControl = "private";

            XDocument xdoc = new XDocument();
                foreach (var index in BlogPostList)
                {
                        var xEle = new XElement("BlogPosts",
                            from blog in BlogPostList
                            where blog.Title != null
                            where blog.BodyText != null
                            where blog.Author != null
                            where blog.Image != null
                            where blog.PublishDate != null
                            select new XElement("Blog",
                                            new XElement("Title", blog.Title),
                                            new XElement("BodyText", blog.BodyText),
                                            new XElement("PublishDate", blog.PublishDate),
                                            new XElement("Author", blog.Author),
                                            new XElement("Image", blog.Image),
                                            new XElement("Comments", blog.Comments)
                                            //from comment in blogCommentList
                                            //select new XElement("Comments",
                                            //    new XElement("Author", comment.Author),
                                            //    new XElement("Comment", comment.Comment)
                                            //    )
                                            )
                        );

                       xdoc.Add(xEle);
                       HttpContext.Current.Response.Write(xdoc);
                       HttpContext.Current.Response.End();
                       HttpContext.Current.Response.Flush();
                }


        }

        public List<BlogPosts> getPostList()
        {
            var contentType = UmbracoContext.Current.Application.Services.ContentTypeService
                .GetContentType("umbNewsItem");
            var contentService = UmbracoContext.Current.Application.Services.ContentService;
            var nodes = contentService.GetContentOfContentType(contentType.Id);

            return nodes.Select(node => new BlogPosts()
            {
                Title = node.GetValue("title").ToNullSafeString(),
                BodyText = node.GetValue("bodyText").ToNullSafeString(),
                PublishDate = node.GetValue("publishDate").ToNullSafeString(),
                Author = node.GetValue("author").ToNullSafeString(),
                Image = node.GetValue("image").ToNullSafeString(),
                Comments = getCommentList(node.Id)
            }).ToList();
        }

        public List<BlogComment> getCommentList(int nodeid)
        {
            var contentType = UmbracoContext.Current.Application.Services.ContentTypeService.GetContentType("comments");
            var contentService = UmbracoContext.Current.Application.Services.ContentService;
            var x = contentService.GetChildren(nodeid);
            var nodes = contentService.GetContentOfContentType(contentType.Id);

            return nodes.Select(node => new BlogComment()
                {
                    Author = node.GetValue("author").ToNullSafeString(),
                    Comment = node.GetValue("comment").ToNullSafeString()
                }).ToList();
        }
    }
}

Currently I get this output:

<BlogPosts>
  <Blog>
    <Title>Random Blog Post</Title>
    <BodyText>&lt;p&gt;This is a new random blog post's content&lt;/p&gt;</BodyText>
    <PublishDate>10/06/2016 00:00:00</PublishDate>
    <Author>0</Author>
    <Image>1114</Image>
    <Comments>uBlogsyUmbracoExport.Models.BlogCommentuBlogsyUmbracoExport.Models.BlogCommentuBlogsyUmbracoExport.Models.BlogCommentuBlogsyUmbracoExport.Models.BlogCommentuBlogsyUmbracoExport.Models.BlogComment</Comments>
  </Blog>
  <Blog>
    <Title>This is a second blog post</Title>
    <BodyText>&lt;p&gt;This is a second blog post's content&lt;/p&gt;</BodyText>
    <PublishDate>06/06/2016 00:00:00</PublishDate>
    <Author>0</Author>
    <Image>1117</Image>
    <Comments>uBlogsyUmbracoExport.Models.BlogCommentuBlogsyUmbracoExport.Models.BlogCommentuBlogsyUmbracoExport.Models.BlogCommentuBlogsyUmbracoExport.Models.BlogCommentuBlogsyUmbracoExport.Models.BlogComment</Comments>
  </Blog>
</BlogPosts>

That's the first issue. The second is the fact that I have more than these two posts. I actually have 5 posts, yet only two are being pulled through.