Hey Nik,

Thank you for your reply!

I tried your first suggestion but it tells me the Value cannot be null.

A live example can be seen here

A bike can be:

• Mand = Male
• Kvinde = Woman
• Alle køn = No gender / Every bike / null

Some bikes have NO gender/are null because it's unisex bikes. Right now, you'll see only unisex bikes if you choose Specialized which has ALL bikes of every subcategory.

While being on Specialized I'd like to show both null, male and female at the same time.

In other words

Is it possible to have a string gender = ?? that has ALL the checkbox values? So if I call gender it'll be both male & female?

YES! It works, you are the man Nik!

Thank you for helping me through this. Not only did I learn something new - my most annoying problem has been solved aswell.

Thank you for the solution!

Nik, I have a quick question though. (nothing is ever quick)

The solution you can up with work as a charm and for that I'm really happy :o)

But if I choose a price, it seems to mess it up somehow. I thought I could just take you're solution and throw it inside my range for when a price is selected.

If you go here -> Select Mand/Male -> Select the lowest pricerange

Apparently, It takes EVERY unisex/null bike, eventhough it's not in the pricerange.

I'm not sure how to use your solution AND check for prices at the same time:

  if (priceArray.Count() == 2 && int.TryParse(priceArray[0], out minPrice) && int.TryParse(priceArray[1], out maxPrice))
{

selectedItems.AddRange(productTypes .Where(x =>
      !x.Parent.HasValue("genderList")
      || x.Parent.GetPropertyValue<string>("genderList").Split(',').Any(g => gender.Contains(g))
      && x.HasValue("price")
      && x.GetPropertyValue<int>("price") > minPrice
      && x.GetPropertyValue<int>("price") < maxPrice));

      itemCount = selectedItems.Count();

     foreach (var item in selectedItems.Skip((page - 1) * pageSize).Take(pageSize))
     {
      /* If pricerange is selected */
      @buildItemProduct(item);
      }
 }

Hi Mike,

Okay, so what you need to do is group your conditions by using brackets.

You have 2 sets of conditions.

1) Does it meet the gender requirements 2) Does it fall into the price range.

So, a quick mock might looks something like this:

selectedItems.AddRange(productTypes .Where(x =>
  (!x.Parent.HasValue("genderList")
  || x.Parent.GetPropertyValue<string>("genderList").Split(',').Any(g => gender.Contains(g))
  && 
  (x.HasValue("price")
  && x.GetPropertyValue<int>("price") >= minPrice
  && x.GetPropertyValue<int>("price") <= maxPrice)));

(Notice I added >= this means that the price can equal the minimum or the maximum values of your range else you would never see something that cost 5000kr or 9999kr if you chose the 5000 - 9999kr range

The grouping in this case case been done using brackets, an alternative (although less efficient) is to break it out into different selects:

  //Your gender filtering
  selectedItems.AddRange(productTypes .Where(x =>
  !x.Parent.HasValue("genderList")
  || x.Parent.GetPropertyValue<string>("genderList").Split(',').Any(g => gender.Contains(g));

  //Your price filtering
  selectedItems = selectedItems.Where(x=>x.HasValue("price")
  && x.GetPropertyValue<int>("price") >= minPrice
  && x.GetPropertyValue<int>("price") <= maxPrice);

Good luck :-)

Would it solve your problem to group your conditions?

    if (priceArray.Count() == 2 && int.TryParse(priceArray[0], out minPrice) && int.TryParse(priceArray[1], out maxPrice))
{

selectedItems.AddRange(productTypes .Where(x =>
     (!x.Parent.HasValue("genderList")
      || x.Parent.GetPropertyValue<string>("genderList").Split(',').Any(g => gender.Contains(g)))
      && (x.HasValue("price")
      && x.GetPropertyValue<int>("price") > minPrice
      && x.GetPropertyValue<int>("price") < maxPrice));

      itemCount = selectedItems.Count();

     foreach (var item in selectedItems.Skip((page - 1) * pageSize).Take(pageSize))
     {
      /* If pricerange is selected */
      @buildItemProduct(item);
      }
 }