C# Captured Variable In Loop

List<Func<int>> actions = new List<Func<int>>();

int variable = 0;
while (variable < 5)
{
    actions.Add(() => variable * 2);
    ++ variable;
}

foreach (var act in actions)
{
    Console.WriteLine(act.Invoke());
}

while (variable < 5)
{
    int copy = variable;
    actions.Add(() => copy * 2);
    ++ variable;
}

for (int i=0; i < 10; i++) // Just one variable
foreach (string x in foo) // And again, despite how it reads out loud

List<Func<int>> actions = new List<Func<int>>();

int variable = 0;
while (variable < 5)
{
    int variable1 = variable;
    actions.Add(() => variable1 * 2);
    ++variable;
}

foreach (var act in actions)
{
    Console.WriteLine(act.Invoke());
}

Console.ReadLine();

while( variable < 5 )
{
    int copy = variable;
    actions.Add( () => copy * 2 );
    ++variable;
}

for (int counter = 1; counter <= 5; counter++)

{

  new Thread (() => Console.Write (counter)).Start();

}

for (int counter = 1; counter <= 5; counter++)

{

  int localVar= counter;

  new Thread (() => Console.Write (localVar)).Start();

}