C# - Performance of reusing object with string properties vs creating new instance -

suppose have class contains 3 string properties. new instances of being created several times needlessly throughout application. class use these 3 strings perform linq query like:

where(string1 == this.string1).where(string2 == this.string2).where(string3 == this.string3)

instead of creating instance every single time object needed, i'm thinking modifying classes use type store 1 instance of object , modify string properties before using each time. right way optimize class? basically, i'm trying avoid overhead of creating instance , allocating memory strings every time.

is there faster way perform above linq query instead?

yes is. unless there're plenty of objects, difference in performance negligible.