To get the total number of elements in a specified dimension of an array, the code is as follows −Example Live Demousing System; public class Demo {    public static void Main() {       string[] products = new string[] { "Andy", "Mark", "Gary", "Andre"};       Console.WriteLine("One or more name begins with 'A'? = {0}",       Array.Exists(products, ele => ele.StartsWith("A")));       Console.WriteLine("Is the array having fixed size? = " + products.IsFixedSize);       Console.WriteLine("Is the array read only? = " + products.IsReadOnly);       Console.WriteLine("Is the array synchronized? = " + products.IsSynchronized); ... Read More

To set the capacity to the actual number of elements 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 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...");     ... Read More

To set the capacity to the actual number of elements in 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

To search for an element matching the conditions and return the zero-based index of the last occurrence within the entire List, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    private static bool demo(int i) {       return ((i % 10) == 0);    }    public static void Main(String[] args) {       List list = new List();       list.Add(200);       list.Add(215);       list.Add(310);       list.Add(500);       list.Add(600);       Console.WriteLine("List elements...");       foreach (int i in ... Read More

To search the index of specified object in Collection, the code is as follows −Example Live Demousing System; using System.Collections.Specialized; public class Demo {    public static void Main() {       StringCollection strCol = new StringCollection();       strCol.Add("Accessories");       strCol.Add("Books");       strCol.Add("Electronics");       strCol.Add("Books");       Console.WriteLine("StringCollection elements...");       foreach (string res in strCol) {          Console.WriteLine(res);       }       strCol.Insert(2, "Headphone");       Console.WriteLine("StringCollection elements...UPDATED");       foreach (string res in strCol) {          Console.WriteLine(res); ... Read More

To get the number of elements contained in the BitArray, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main() {       BitArray arr1 = new BitArray(5);       BitArray arr2 = new BitArray(5);       arr1[0] = false;       arr1[1] = false;       arr2[0] = false;       arr2[1] = true;       Console.WriteLine("BitArray1 elements...");       foreach (bool res in arr1) {          Console.WriteLine(res);       }       Console.WriteLine("BitArray2 elements...");     ... Read More

To check whether a thread is alive or not, the code is as follows −Example Live Demousing System; using System.Threading; public class Demo {    public static void Main() {       Thread thread = new Thread(new ThreadStart(demo1));       thread = Thread.CurrentThread;       Console.WriteLine("Is the thread alive? = "+thread.IsAlive);       ThreadPool.QueueUserWorkItem(new WaitCallback(demo2));       Console.WriteLine("Current state of Thread = "+thread.ThreadState);       Console.WriteLine("ManagedThreadId = "+thread.ManagedThreadId);       thread.IsBackground = true;       Console.WriteLine("Is the Thread a background thread? = "+thread.IsBackground);    }    public static void demo1() {     ... Read More

To search in a SortedList object, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main() {       SortedList list = new SortedList();       list.Add("1", "One");       list.Add("2", "Two");       list.Add("3", "Three");       list.Add("4", "Four");       list.Add("5", "Five");       list.Add("6", "Six");       list.Add("7", "Seven");       list.Add("8", "Eight");       Console.WriteLine("Key and Value of SortedList....");       foreach(DictionaryEntry k in list )       Console.WriteLine("Key: {0}, Value: {1}", k.Key , k.Value ... Read More

To check whether a thread is a background thread or not, the code is as follows −Example Live Demousing System; using System.Threading; public class Demo {    public static void Main() {       Thread thread = new Thread(new ThreadStart(demo1));       ThreadPool.QueueUserWorkItem(new WaitCallback(demo2));       Console.WriteLine("Current state of Thread = "+thread.ThreadState);       Console.WriteLine("ManagedThreadId = "+thread.ManagedThreadId);       Console.WriteLine("Is the Thread a background thread? = "+Thread.CurrentThread.IsBackground);    }    public static void demo1() {       Thread.Sleep(2000);    }    public static void demo2(object stateInfo) {       Console.WriteLine("Thread belongs to managed thread ... Read More

To get the number of elements in HashSet in C#, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main() {       HashSet set1 = new HashSet();       set1.Add(25);       set1.Add(50);       set1.Add(75);       set1.Add(100);       set1.Add(125);       set1.Add(150);       Console.WriteLine("Elements in HashSet1");       foreach(int val in set1) {          Console.WriteLine(val);       }       Console.WriteLine("Number of elements in HashSet1 = "+set1.Count);       HashSet set2 ... Read More