To add new node or value at the end of LinkedList, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main() {       LinkedList list = new LinkedList();       list.AddLast("A");       list.AddLast("B");       list.AddLast("C");       list.AddLast("D");       list.AddLast("E");       list.AddLast("F");       Console.WriteLine("Count of nodes = " + list.Count);       Console.WriteLine("Elements in LinkedList...");       foreach (string res in list) {          Console.WriteLine(res);       }       ... Read More

To add elements to the end of the ArrayList, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main(String[] args) {       ArrayList list = new ArrayList();       list.Add("Andy");       list.Add("Gary");       list.Add("Katie");       list.Add("Amy");       Console.WriteLine("Elements in ArrayList...");       foreach (string res in list) {          Console.WriteLine(res);       }       string[] strArr = { "John", "Jacob" };       list.AddRange(strArr);       Console.WriteLine("Elements in ArrayList...UPDATED");     ... Read More

To add an element to the List, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main(String[] args) {       List list = new List();       list.Add("One");       list.Add("Two");       list.Add("Three");       list.Add("Four");       list.Add("Five");       list.Add("Six");       list.Add("Seven");       list.Add("Eight");       Console.WriteLine("Enumerator iterates through the list elements...");       List.Enumerator demoEnum = list.GetEnumerator();       while (demoEnum.MoveNext()) {          string res = demoEnum.Current;     ... Read More

To check if SortedDictionary contains the specified key or not, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Generic; public class Demo {    public static void Main() {       SortedDictionary sortedDict = new SortedDictionary();       sortedDict.Add(100, "Mobile");       sortedDict.Add(200, "Laptop");       sortedDict.Add(300, "Desktop");       sortedDict.Add(400, "Speakers");       sortedDict.Add(500, "Headphone");       sortedDict.Add(600, "Earphone");       Console.WriteLine("SortedDictionary key-value pairs...");       IDictionaryEnumerator demoEnum = sortedDict.GetEnumerator();       while (demoEnum.MoveNext())       Console.WriteLine("Key = " + demoEnum.Key + ", Value = ... Read More

To check if Hashtable is synchronized, 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("One", "Katie");       hash.Add("Two", "John");       hash.Add("Three", "Barry");       hash.Add("Four", "");       hash.Add("Five", "Harry");       hash.Add("Six", "F");       hash.Add("Seven", "Tom");       hash.Add("Eight", "Andy");       hash.Add("Nine", "I");       hash.Add("Ten", "Tim");       Console.WriteLine("Hashtable Key and Value pairs...");       foreach(DictionaryEntry entry in hash) { ... Read More

To remove the specified element from the list, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main(String[] args) {       List list1 = new List();       list1.Add("One");       list1.Add("Two");       list1.Add("Three");       list1.Add("Four");       list1.Add("Five");       Console.WriteLine("Elements in List1...");       foreach (string res in list1) {          Console.WriteLine(res);       }       List list2 = new List();       list2.Add("India");       list2.Add("US");       ... Read More

To remove the first occurrence of a specific object from the ArrayList, the code is as follows −Exampleusing System; using System.Collections; public class Demo {    public static void Main(String[] args) {       ArrayList list1 = new ArrayList();       list1.Add("A");       list1.Add("B");       list1.Add("C");       list1.Add("D");       list1.Add("E");       list1.Add("F");       list1.Add("G");       list1.Add("H");       list1.Add("I");       Console.WriteLine("Elements in ArrayList1...");       foreach (string res in list1) {          Console.WriteLine(res);       } ... Read More

To check if a SortedList is read-only, 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("One", "IT");       list.Add("Two ", "Operations");       list.Add("Three", "Marketing");       list.Add("Four", "Purchase");       list.Add("Five", "Sales");       list.Add("Six", "Finance");       Console.WriteLine("SortedList elements...");       foreach(DictionaryEntry d in list) {          Console.WriteLine(d.Key + " " + d.Value);       }       Console.WriteLine("List of values...SortedList"); ... Read More

To get the keys in 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("One", "Finance");       list.Add("Two", "Marketing");       list.Add("Three", "Sales");       list.Add("Four", "Purchase");       list.Add("Five", "Operations");       list.Add("Six", "IT");       Console.WriteLine("SortedList elements...");       foreach(DictionaryEntry d in list) {          Console.WriteLine(d.Key + " " + d.Value);       }       Console.WriteLine("Index at key ... Read More

To add key and value into StringDictionary, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Specialized; public class Demo {    public static void Main() {       StringDictionary strDict = new StringDictionary();       strDict.Add("A", "John");       strDict.Add("B", "Andy");       strDict.Add("C", "Tim");       strDict.Add("D", "Ryan");       strDict.Add("E", "Kevin");       strDict.Add("F", "Katie");       strDict.Add("G", "Brad");       Console.WriteLine("StringDictionary elements...");       foreach(DictionaryEntry de in strDict) {          Console.WriteLine(de.Key + " " + de.Value);       }   ... Read More