C#: Is Implicit Arraylist assignment possible?

int[] IntArray = {1,2,3};

object[] myArray = new object[] {1,2,3,"string1","string2"};
ArrayList myArrayList = new ArrayList(myArray);

ArrayList list = new ArrayList {1,2,3};

List<int> list = new List<int>{1,2,3};

List<int> list = new List<int>(new int[] {1, 2, 3});

ArrayList list = new ArrayList(new object[] { 1, 2, 3, "string1", "string2"});

object[] values = { 1, 2, 3, "string1", "string2" };
ArrayList AL = new ArrayList();
AL = ArrayList.Adapter(values);

//or during intialization
ArrayList AL2 = ArrayList.Adapter(values);