C# lambda, local variable value not taken when you think?

Question

Suppose we have the following code:

void AFunction()
{

   foreach(AClass i in AClassCollection)
   {
      listOfLamb         


        

Answer 1

Yes, the lambda stores a reference to the variable (conceptually speaking, anyway).

A very simple workaround is this:

 foreach(AClass i in AClassCollection)
   {
      AClass j = i;
      listOfLambdaFunctions.AddLast(  () =>  {  PrintLine(j.name); }  );
   }

In every iteration of the foreach loop, a new j gets created, which the lambda captures. i on the other hand, is the same variable throughout, but gets updated with every iteration (so all the lambdas end up seeing the last value)

And I agree that this is a bit surprising. :)