I have a tree structure that uses 2 different types of "Detail Page" nodes.  One has dates and one has non-date "Detail Page" nodes.  I need to determine which list to show depending on if the children have the date property or not of the parent node that has the doctype of 'ListParent'.

I am able to create a list of the nodes, BUT I need to determine which list to show.

This is what I ultimate want:

Parent Node 1 (Doctype of 'ListParent')
 - Node One (non date)
 - Node Two(non date)
 - Node Three(non date)

Parent Node 2 (Doctype of 'ListParent')
 - Node One (date)
 - Node Two(date)
 - Node Three(date)

I am REALLY close with my code but I just need a little help determining which to show.  This is what I have so far below. I just need the IF statement to determine which list to show.

Any help is GREATLY appreciated.

@using umbraco.MacroEngines
@inherits umbraco.MacroEngines.DynamicNodeContext

@{


    if(@Model.Descendants().NodeTypeAlias == "DMNSEvent"){@*Not Working*@
        @pageListingSorted()
    }
    else{
            <P>not sorted</P>
    @pageListing()  
    }

  }

@helper pageListing(){  
  foreach(var item in @Model.Children.Where("!hideFromAllMenus")){
     var listImage = Library.MediaById(item.landingPageImage);
    <div class="boxItem grid_4">

          @if(@item.HasValue("landingPageImage")){
            <a href="@item.Url">
            <img src="/imagegen.ashx?width=224&image=@listImage.Url" style="margin-left:-60px" />
            </a>
            <div class="boxButtons"></div>
                 if (!String.IsNullOrWhiteSpace(item.buyNowLink))
                {
                   <a href="@item.buyNowLink" class="buyNowBtn" title="Buy tickets to @item.Name"  onclick="pageTracker._link('@item.buyNowLink'); return false;">Buy Now</a>
                }

                <a href="@item.Url" class="learnMoreBtn">Learn More</a>
          }
          <h3>
                @if (!String.IsNullOrWhiteSpace(item.altPageTitle))
                {
                   <a href="@item.Url"> @item.altPageTitle</a>
                }
                else
                {
                   <a href="@item.Url"> @item.Name</a>
                }
            </h3>


        </div>

   }

}
@*END PAGE LISTING HELPER*@


@helper pageListingSorted(){
    foreach(var item in @Model.Children.Where("!hideFromAllMenus").Where("calendarEventDateTime != null").OrderBy("calendarEventDateTime")){
     var listImage = Library.MediaById(item.landingPageImage);
        <div class="boxItem grid_4">

          @if(@item.HasValue("landingPageImage")){
            <a href="@item.Url">
                @*--Added margin negative left for original images - Take out on Live--*@
            <img src="/imagegen.ashx?width=224&image=@listImage.Url" style="margin-left:-60px" />
            </a>
            <div class="boxButtons"></div>
                 if (!String.IsNullOrWhiteSpace(item.buyNowLink))
                {
                   <a href="@item.buyNowLink" class="buyNowBtn" title="Buy tickets to @item.Name"  onclick="pageTracker._link('@item.buyNowLink'); return false;">Buy Now</a>
                }

                <a href="@item.Url" class="learnMoreBtn">Learn More</a>
          }
          <h3>
                @if (!String.IsNullOrWhiteSpace(item.altPageTitle))
                {
                   <a href="@item.Url"> @item.altPageTitle</a>
                }
                else
                {
                   <a href="@item.Url"> @item.Name</a>
                }
            </h3>
             @*Event Status*@
            @if (item.soldOut)
            {
                <p class="statusAlert">Sold Out</p>
            }
            else if (item.cancelled)
            {
                <p class="statusAlert">Cancelled</p>
            }
            else if (item.rescheduled)
            {
             <p class="statusAlert">Rescheduled</p>
            }
            else
            {
                <text></text>
            }
             @if (!String.IsNullOrWhiteSpace(item.eventTimeHeader))
            {
                <div class="dateTimeHeader">@item.eventTimeHeader</div>
            } 

        </div>
    }

}@*END PAGE LISTING SORTED HELPER*@