asp.net - Is it possible to combine these 2 statements using linq? -

using asp.net 4.0/c#

i have list of items. list contains duplicates.

this item class:

public class pingtreenode {     public int tierid { get; set; }     public int lenderid { get; set; }     public int weight { get; set; }     public int seq { get; set; }      public pingtreenode(int tierid, int lenderid, int weight, int seq)     {          tierid = tierid;         lenderid = lenderid;         weight = weight;         seq = seq;     } } 

in first instance want select first item each lenderid. using linq:

var tiernodes = new list<pingtreenode>();     tiernodes = tiernodes.groupby(x => x.lenderid).select(x => x.first()).tolist(); 

however, want add sequence list, starting 1,2,3 etc. separately looping through this:

            int seq = 1;             foreach (var t in tiernodes)             {                 t.seq = seq;                 seq++;             } 

is possible both group , sequence @ same time using single linq statement?

int seq = 1; var tiernodes = new list<pingtreenode>();     tiernodes = tiernodes     .groupby(x => x.lenderid)     .select(x => { var y = x.first(); y.seq = seq++; return y; })     .tolist();