Is there any way to do this, assign a value within a List.ForEach() statement?

Question

I have this:

var lineArray = line.Split(\';\');

lineArray.ToList().ForEach(x =>
{
    if (x == \"(null)\")
        x = \"NULL\";
    else
        x = string.         


        

Answer 1

you can construct a new list from your original one :

var newList = lineArray.Select(x => x == "(null)" ? "NULL" : string.Format("'{0}'", x));