method inside an Linq

void Main()
{

var q = (from p in Posts join b in Documents
        on p.User_id equals b.User_id
        where p.User_id== 3
        select new
{
T = p.Post_doc_id,
S=p.Post_gpslocation_id,
Z = p.Post_feeds,
})
        .AsEnumerable()
        .Select(x => new
{ T = x.T,
S = someMethod(1,3).ToString(),
});
q.Dump();
}


// Define other methods and classes here
int someMethod(int a, int b)
{
int c = a+b;
return c;
}