vb.net - Why cant I set a property of a pointf in a list? -

test class:

public class durp     public somelist new list(of pointf)     public sub stuff()         somelist.add(new pointf)         somelist(0).x = 5     end sub end class 

it tells me on line somelist(0).x = 5 "expression value , thefore cannot target of assignment"

wat?

if want use list(), create own version of pointf class instead of struct.

otherwise, create local variable, modify it, put in:

public sub stuff()     somelist.add(new pointf)      dim ptf pointf = somelist(0)     ptf.x = 5      somelist(0) = ptf end sub 

alternatively, build list convert array. can use directly planned:

public class durp      public somearray() pointf      public sub stuff()         dim somelist new list(of pointf)         somelist.add(new pointf)         ' ... add bunch more points somehow ...          somearray = somelist.toarray     end sub      public sub stuff2()         somearray(0).x = 5     end sub  end class