To get object at the top of the Stack, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main() {       Stack stack = new Stack();       stack.Push("A");       stack.Push("B");       stack.Push("C");       stack.Push("D");       stack.Push("E");       stack.Push("F");       stack.Push("G");       stack.Push("H");       stack.Push("I");       stack.Push("J");       Console.WriteLine("Count of elements = "+stack.Count);       Console.WriteLine("Element at the top of stack = " + stack.Peek());    } ... Read More

To get an IDictionaryEnumerator object in OrderedDictionary, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Specialized; public class Demo {    public static void Main() {       OrderedDictionary dict = new OrderedDictionary();       dict.Add("1", "One");       dict.Add("2", "Two");       dict.Add("3", "Three");       dict.Add("4", "Four");       dict.Add("5", "Five");       dict.Add("6", "Six");       dict.Add("7", "Seven");       dict.Add("8", "Eight");       IDictionaryEnumerator demoEnum = dict.GetEnumerator();       while (demoEnum.MoveNext()) {          Console.WriteLine("Key = " + demoEnum.Key + ... Read More

To check if SortedSet and the specified collection contain the same elements, the code is as follows −Exampleusing System; using System.Collections.Generic; public class Demo {    public static void Main() {       SortedSet set1 = new SortedSet();       set1.Add(100);       set1.Add(200);       set1.Add(300);       SortedSet set2 = new SortedSet();       set2.Add(450);       set2.Add(550);       set2.Add(650);       set2.Add(750);       set2.Add(800);       Console.WriteLine("Does it contain the same elements? = "+set1.SetEquals(set2));    } }OutputThis will produce the following output −Does it contain the same elements? = FalseExampleLet us ... Read More

To get the values in a SortedList object, the code is as follows −Exampleusing System; using System.Collections; public class Demo {    public static void Main(String[] args) {       SortedList list = new SortedList();       list.Add(1, "One");       list.Add(2, "Two");       list.Add(3, "Three");       list.Add(4, "Four");       list.Add(5, "Five");       ICollection col1 = list.Values;       Console.WriteLine("Values...");       foreach(string s in col1)       Console.WriteLine(s);       ICollection col2 = list.Keys;       Console.WriteLine("Keys...");       foreach(int s in ... Read More

To get the value at the specified index of a SortedList object, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main(String[] args) {       SortedList list = new SortedList();       list.Add("A", "Jacob");       list.Add("B", "Sam");       list.Add("C", "Tom");       list.Add("D", "John");       list.Add("E", "Tim");       list.Add("F", "Mark");       list.Add("G", "Gary");       Console.WriteLine("Value at index 2 = "+list.GetByIndex(2));       Console.WriteLine("Value at index 5 = "+list.GetByIndex(5));       Console.WriteLine("Value at index ... Read More

To check if the ArrayList is read-only, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main(String[] args) {       ArrayList list1 = new ArrayList();       list1.Add("ABC");       list1.Add("BCD");       list1.Add("CDE");       list1.Add("DEF");       list1.Add("EFG");       list1.Add("GHI");       list1.Add("HIJ");       list1.Add("IJK");       list1.Add("JKL");       list1.Add("KLM");       Console.WriteLine("Elements in ArrayList...");       foreach (string res in list1) {          Console.WriteLine(res);       } ... Read More

To create an empty HybridDictionary with specified case sensitivity, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Specialized; public class Demo {    public static void Main() {       HybridDictionary myDict = new HybridDictionary();       myDict.Add("A", "AB");       myDict.Add("B", "BC");       myDict.Add("C", "DE");       myDict.Add("D", "FG");       myDict.Add("e", "fg");       Console.WriteLine("Key/Value pairs...");       foreach(DictionaryEntry de in myDict)          Console.WriteLine("Key = "+de.Key + ", Value = " + de.Value);    } }OutputThis will produce the following output −Key/Value pairs... Key = A, ... Read More

To create an empty case-sensitive HybridDictionary, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Specialized; public class Demo {    public static void Main() {       HybridDictionary dict = new HybridDictionary(false);       dict.Add("A", "AB");       dict.Add("B", "BC");       dict.Add("C", "DE");       dict.Add("D", "de");       Console.WriteLine("Key/Value pairs...");       foreach(DictionaryEntry de in dict)          Console.WriteLine("Key = "+de.Key + ", Value = " + de.Value);    } }OutputThis will produce the following output −Key/Value pairs... Key = A,  Value = AB Key = B,  Value = BC Key = C,  Value = DE Key = D,  Value = deExampleLet us ... Read More

To create an ArrayList having specified initial capacity, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main(String[] args) {       ArrayList list1 = new ArrayList(5);       list1.Add("A");       list1.Add("B");       list1.Add("C");       list1.Add("D");       Console.WriteLine("Capacity in ArrayList1 = "+list1.Capacity);       Console.WriteLine("Elements in ArrayList1...");       foreach (string res in list1) {          Console.WriteLine(res);       }       ArrayList list2 = new ArrayList(10);       list2.Add("A");       ... Read More

To create a synchronized wrapper for the Hashtable, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main() {       Hashtable hash = new Hashtable();       hash.Add("1", "AB");       hash.Add("2", "CD");       hash.Add("3", "EF");       hash.Add("4", "GH");       hash.Add("5", "IJ");       hash.Add("6", "KL");       Console.WriteLine("Hashtable elements...");       foreach(DictionaryEntry d in hash) {          Console.WriteLine("Key = "+d.Key + ", Value = " + d.Value);       }       ... Read More