改变Foreach命令？

List<int> myList = new List<int> { 1, 2, 3, 4, 5 };
List<int> newList = new List<int>();

foreach (int item in myList.ToArray())
{
    if (item % 2 == 0)
    {
        newList.Add(item * 2);
        myList.Remove(item);
    }
}

List<int> myList = new List<int> { 1, 2, 3, 4, 5 };
List<int> newList = new List<int>();

for (int i = 0; i < myList.Count; i++)
{
    if (myList[i] % 2 == 0)
    {
        newList.Add(myList[i] * 2);
        myList.RemoveAt(i);
    }
}

List<int> myList = new List<int> { 1, 2, 3, 4, 5 };
List<int> newList = myList.Where(item => item % 2 == 0).Select(item => item * 2).ToList();
myList.RemoveAll(item => item % 2 == 0);