Count elements in each array of a List<Array>

Question

How can I count elements that are equal to 0 in each array of a list?

I have a list List<byte[]> piks. I would like to count in each byte[] how many elements are with equal to 0.

I tried a few ways:

from c in piksle_lista_tablic[84] 
where (c.Equals(0)) 
select c

or

piksle_lista_tablic[84].Count(n => n == 0)

and I always get the error Expression cannot contain lambda expressions.

For example: piks[1] is an array containing 1156 items, and I would like to know how many specific elements are in that array.

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PS: Can i use Linq in watch window?

Answer 1

var results = from arr in piks
              select arr.Where(b=>b==0).Count()

that code will iterate the list of array and for each array find the elements equalling zero and return an IEnumerable with the counts for each array. I like the where count more than the Count(selector) but that a matter of taste. I doubt there's going to be noticeable difference performancewise

to you ps 1 yes you can use linq while debugging but it's generally a pain because a linq statement is one statement chopping it up in methods can sometimes help while debugging but I dislike writing code for the sake of the debugger.

EDIT As per your comment: No you cannot use Lambda in the watch window. You can use Linq in the watch window but only as method calls and only with named functions