To remove the specified key entry from HybridDcitionary, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Specialized; public class Demo {    public static void Main() {       HybridDictionary dict1 = new HybridDictionary();       dict1.Add("A", "Books");       dict1.Add("B", "Electronics");       dict1.Add("C", "Smart Wearables");       dict1.Add("D", "Pet Supplies");       dict1.Add("E", "Clothing");       dict1.Add("F", "Footwear");       Console.WriteLine("HybridDictionary1 elements...");       foreach(DictionaryEntry d in dict1) {          Console.WriteLine(d.Key + " " + d.Value);       }       ... Read More

To remove the first occurrence from the StringCollection, the code is as follows −Example Live Demousing System; using System.Collections.Specialized; public class Demo {    public static void Main() {       StringCollection stringCol = new StringCollection();       String[] arr = new String[] { "100", "200", "100", "400", "500" };       Console.WriteLine("Array elements...");       foreach (string res in arr) {          Console.WriteLine(res);       }       stringCol.AddRange(arr);       Console.WriteLine("Total number of elements = "+stringCol.Count);       stringCol.Remove("100");       Console.WriteLine("Total number of elements now = ... Read More

To check if the StringCollection is read-only, the code is as follows −Example Live Demousing System; using System.Collections.Specialized; public class Demo {    public static void Main() {       StringCollection stringCol = new StringCollection();       String[] arr = new String[] { "100", "200", "300", "400", "500" };       Console.WriteLine("Array elements...");       foreach (string res in arr) {          Console.WriteLine(res);       }       stringCol.AddRange(arr);       Console.WriteLine("Is the StringCollection read-only? = "+stringCol.IsReadOnly);       Console.WriteLine("Does the specified string is in the StringCollection? = "+stringCol.Contains("800"));   ... Read More

To check if the specified string is in the StringCollection, the code is as follows −Example Live Demousing System; using System.Collections.Specialized; public class Demo {    public static void Main() {       StringCollection stringCol = new StringCollection();       String[] arr = new String[] { "100", "200", "300", "400", "500" };       Console.WriteLine("Array elements...");       foreach (string res in arr) {          Console.WriteLine(res);       }       stringCol.AddRange(arr);       Console.WriteLine("Does the specified string is in the StringCollection? = "+stringCol.Contains("800"));    } }OutputThis will produce the following ... Read More

To remove the entry with specified key from ListDictionary, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Specialized; public class Demo {    public static void Main(){       ListDictionary dict1 = new ListDictionary();       dict1.Add("A", "Books");       dict1.Add("B", "Electronics");       dict1.Add("C", "Smart Wearables");       dict1.Add("D", "Pet Supplies");       dict1.Add("E", "Clothing");       dict1.Add("F", "Footwear");       Console.WriteLine("ListDictionary1 elements...");       foreach(DictionaryEntry d in dict1) {          Console.WriteLine(d.Key + " " + d.Value);       }       ... Read More

To remove the entry at specified index from OrdererdDictionary, 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("A", "Books");       dict.Add("B", "Electronics");       dict.Add("C", "Smart Wearables");       dict.Add("D", "Pet Supplies");       dict.Add("E", "Clothing");       dict.Add("F", "Footwear");       Console.WriteLine("OrderedDictionary elements...");       foreach(DictionaryEntry d in dict) {          Console.WriteLine(d.Key + " " + d.Value);       }     ... Read More

To check if two SortedList objects are equal, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main(String[] args) {       SortedList list1 = new SortedList();       list1.Add("One", 1);       list1.Add("Two ", 2);       list1.Add("Three ", 3);       list1.Add("Four", 4);       list1.Add("Five", 5);       list1.Add("Six", 6);       list1.Add("Seven ", 7);       list1.Add("Eight ", 8);       list1.Add("Nine", 9);       list1.Add("Ten", 10);       Console.WriteLine("SortedList1 elements...");       foreach(DictionaryEntry ... Read More

To check if two OrderedDictionary objects are equal, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Specialized; public class Demo {    public static void Main() {       OrderedDictionary dict1 = new OrderedDictionary();       dict1.Add("A", "Books");       dict1.Add("B", "Electronics");       dict1.Add("C", "Smart Wearables");       dict1.Add("D", "Pet Supplies");       dict1.Add("E", "Clothing");       dict1.Add("F", "Footwear");       Console.WriteLine("OrderedDictionary1 elements...");       foreach(DictionaryEntry d in dict1) {          Console.WriteLine(d.Key + " " + d.Value);       }       ... Read More

To remove the element with the specified key from a SortedList, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main(String[] args) {       SortedList sortedList = new SortedList();       sortedList.Add("A", "1");       sortedList.Add("B", "2");       sortedList.Add("C", "3");       sortedList.Add("D", "4");       sortedList.Add("E", "5");       sortedList.Add("F", "6");       sortedList.Add("G", "7");       sortedList.Add("H", "8");       sortedList.Add("I", "9");       sortedList.Add("J", "10");       Console.WriteLine("SortedList elements...");       foreach(DictionaryEntry d ... Read More

To remove the element at the specified index 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 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