public void ArrayListOperations()
{
ArrayList arrayList = new ArrayList();
arrayList.Add(10);
arrayList.Add(89);
arrayList.Add(29);
arrayList.Add(-1);
arrayList.Add(15);
PrintArrayList(arrayList);
arrayList.Sort();
arrayList.Insert(2, 18);
PrintArrayList(arrayList);
Console.WriteLine("\nArraylist capacity\t" + arrayList.Capacity);
int hasElement = arrayList.IndexOf(23);
if (hasElement >= 0)
{
Console.WriteLine("Element is present");
}
else
{
Console.WriteLine("Element is not present");
}
arrayList.TrimToSize();
Console.WriteLine("\nArraylist capacity\t" + arrayList.Capacity);
int[] arr = { 14, 17 };
arrayList.AddRange(arr);
PrintArrayList(arrayList);
arrayList.InsertRange(3, arr);
PrintArrayList(arrayList);
arrayList.SetRange(7, arr);
PrintArrayList(arrayList);
}
public ArrayList_p()
{
arrayList = new ArrayList();
arrayList1 = new ArrayList(40);
Console.WriteLine("ArrayList default capacity: {0}", arrayList.Capacity);
Console.WriteLine("ArrayList(40) default capacity: {0}", arrayList1.Capacity);
arrayList.Add("some");
arrayList.Add("text");
Console.WriteLine("ArrayList capacity (after adding 2 elements): {0}", arrayList.Capacity);
arrayList.Add("foo");
arrayList.Add("bar");
arrayList.Add("lol");
Console.WriteLine("ArrayList capacity (after adding 3 elements): {0}", arrayList.Capacity);
Console.WriteLine("ArrayList count elements: {0}", arrayList.Count);
Console.WriteLine("ArrayList has a fixed size: {0}", arrayList.IsFixedSize);
Console.WriteLine("ArrayList is read-only: {0}", arrayList.IsReadOnly);
Console.WriteLine("ArrayList is synchronized (thread-safe): {0}", arrayList.IsSynchronized);
var s_arrList = ArrayList.Synchronized(arrayList);
Console.WriteLine("ArrayList is synchronized (thread-safe): {0}", s_arrList.IsSynchronized);
lock (arrayList.SyncRoot)
{
foreach (var element in arrayList)
{
Console.Write("{0} ", element.ToString());
}
Console.Write("\n");
}
// ArrayList does not guarantee sorted array, need to sort in manually before doing BinarySearch
arrayList.Sort();
int elementIndex = arrayList.BinarySearch("foo");
Console.WriteLine("ArrayList BinarySearch returns element position: {0}", elementIndex.ToString());
arrayList.TrimToSize();
Console.WriteLine("ArrayList capacity after trimming to size: {0}", arrayList.Capacity);
arrayList.Clear();
Console.WriteLine("ArrayList count after clearing: {0}", arrayList.Count);
Console.WriteLine("ArrayList capacity after clearing: {0}", arrayList.Capacity);
}
