List Index Out of Range exception when creating a task

Question

The exact error:

Index was out of range. Must be non-negative and less than the size of the collection.

I\'ve index arrays and l

Answer 1

Closures capture variables, not values.

Change the code to the following, and you'll see the issue go away:

for (int i = 0; i < addressList.Count; i++) {
    textBox1.Text += ("Task for " + addressList[i] + ":" + portList[i] + " initiated." + Environment.NewLine);

    var temp = i;
    Task.Factory.StartNew(() => PingTaskAdapted(addressList[temp], portList[temp]));
    }