Umbraco Content as Json (alttemplate=json or alttemplate=json&includeChildren=1 or alttemplate=json&includeAllChildren=1) for Umbraco v 4

json.master

<%@ Master Language="C#" AutoEventWireup="true" %>

<%@ Import Namespace="umbraco" %>

<script runat="server">

    protected void Page_Load(object sender, EventArgs e)
    {
        var createdObject = nodeObject(umbraco.NodeFactory.Node.getCurrentNodeId(), Request["includeChildren"] != null, Request["includeAllChildren"] != null);

        //var filter = Request.QueryString.Cast<string>().Select(s => new KeyValuePair<string, string>(s, Request.QueryString[s]));

        Response.Clear();
        Response.ContentType = "application/json; charset=utf-8";
        Response.Write(System.Web.Helpers.Json.Encode(createdObject));
        Response.End();
    }



    private object nodeObject(int nodeId, bool includeChildren, bool includeAllChildren)
    {
        var node = new umbraco.NodeFactory.Node(nodeId);

        return new
        {
            node.Name,
            node.UrlName,
            node.NodeTypeAlias,
            node.CreatorName,
            TemplateId = node.template,
            Properties = node.PropertiesAsList.Select(p => new { p.Alias, p.Value }).ToDictionary(k => k.Alias, k => (k.Value.Contains("UMBRACOMACRO") ? umbraco.library.RenderMacroContent(k.Value, nodeId) : k.Value)),
            node.CreateDate,
            node.UpdateDate,
            node.SortOrder,
            node.Url,
            ParentId = (node.Parent != null) ? node.Parent.Id : -1,
            ChildIds = node.ChildrenAsList.OrderBy(n => n.SortOrder).Select(n => n.Id),
            Children = (includeChildren || includeAllChildren) ? node.ChildrenAsList.OrderBy(n => n.SortOrder).Select(n => nodeObject(n.Id, includeAllChildren, includeAllChildren)) : null
        };
    }


</script>