CODEWITHSUNDEEP
linq
Night Monger
Night Monger

Reputation: 780

Filter List to the same list using Linq

How can i filter the same list using a certain condition. i know using two lists. I want to do it with the same list ..

If i have a list called lstValues Which has Name and count, i want to filter all the items that has count as 0. So i created another list 

 lstFilterdedValues.addRange(lstValues.Where(i => i.Count > 0)));

this works.. But i dont want to use another new List called lstFilteredValues.

I want something like 

lstValues =lstValues.Where(i => i.Count > 0)).Select(k=>(k));

But this doesnt work.

Upvotes: 0

Views: 71

Answers (1)

MarcinJuraszek
MarcinJuraszek

Reputation: 125630

Use ToList() call:

lstValues = lstValues.Where(i => i.Count > 0).ToList();

It will create new list and assign it back to your lstValues variable.

If you don't want to create new list and reassign the variable you can use List<T>.RemoveAll method:

lstValues.RemoveAll(i => i.Count <= 0);

As you can see, you have to reverse the condition, because it specifies which items will be removed, not which should stay in the list.

Upvotes: 1

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