C # list<t>

list<t> xx = new list<t> ();

T x = xx.    First (x=>x.x ==x); Looking for one of the matching values of an object, returning the object

Xx.           Any (x=> x.x = = x); Look for one of the matching values of the object, return bool

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;namespacerooxml{ Public classMain { Public Static voidMain () {List<A> Li =NewList<a> (); Li. ADD (NewA () {k=9, v="DDD"}); Li. ADD (NewA () {k=7, v="Ddd7"}); Li. ADD (NewA () {k=8, v="ddd55"}); A A= li. First (x = X.K = =7); if(a!=NULL) {li.                Remove (a); Console.WriteLine ("is win"); }            foreach(varRinchLi)            {Console.WriteLine (R.V);        } Console.WriteLine (); }    }    classa{ Public intk{Get;Set;}  Public stringv{Get;Set; } }}

C # list<t>