c# - How to modify a List<Vector3> property -


i have c# class unity has public property list called points. declared like. 

public list<vector3 > points{get; set;}

i want make translate method adds vector3 each element. problem having within method values updating after method returns points unchanged. think modying copy of points , not actual list.
here's have tried:

i have made new list local method called newpoints , did this. 

public void translate(vector3 vect) {     list<vector3> newpoints = new list <vector3>();      foreach(vector3 v in points)      {         newpoints. add(v +vect) ;//vect vector3 parameter      }     points =newpoints; }

i have tried

int count = 0; foreach(vector3 v in points)  {     points[count] = v + vect;     count++; } points =newpoints;

if take pity on newbie , me out great. if there better method of accomplishing same thing know want understand why isn't working in case same issue ever comes again.

two things note:

  • the list points should initialized somewhere (call constructor of list).
  • probably typo, public should not have capital 'p'

this worked on computer:

public list<vector3> points{ get; set; }  private void start() {     points = new list<vector3>(); // initialize list      // add dummy values test     points.add(new vector3(1, 2, 3));     points.add(new vector3(4, 5, 6));     points.add(new vector3(7, 8, 9));      printpoints(); // display      translate(vector3.one); // translate (1,1,1)      printpoints(); // display again }  public void translate(vector3 vect) {     // old school loop instead of foreach can modify points directly     (int = 0; < points.count; i++)     {         points[i] += vect;     } }  public void printpoints() {     foreach (vector3 v in points)     {         debug.log(v);     } }

this prints:

(1.0,2.0,3.0) (4.0,5.0,6.0) (7.0,8.0,9.0)  (2.0,3.0,4.0) (5.0,6.0,7.0) (8.0,9.0,10.0)

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