How do I use LINQ in this scenario? [closed]

Question

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.

---

This question appears to be off-topic because it lacks sufficient information to diagnose the problem. Describe your problem in more detail or include a minimal example in the question itself.

Closed 9 years ago.

Improve this question

I am new to LINQ.

I have a SortedDictionary

SortedDictionary<int, int> book = new SortedDictionary<int, int>();

and the pair are

(5,10),(7,20),(8,30),(9,15),(10,60)

Is there any LINQ statement that can allow me to selected the lowest key whose value is more than 25? For this example, it is the key is 8

Answer 1

As it's a sorted dictionary (and therefore the first key matching the criteria is always the lowest key matching the criteria), you can just do:

var result = book.First(o => o.Value > 25).Key;

Answer 2

book.Where(i => i.Item > 25).Min(i => i.Key)