Declare and initialize a list.var products = new List (); products.Add("Accessories"); products.Add("Clothing"); products.Add("Footwear");To get the size, use the Capacity property.products.CapacityNow let us see the complete code to find the size of a list.Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main(string[] args) {     ... Read More

To get the sum of digits using recursion, set a method in C# that calculates the sum.static int sum(int n) {    if (n != 0) {       return (n % 10 + sum(n / 10));    } else {       return 0;    }The above ... Read More

Firstly, declare a HashSet and add elements −var names = new HashSet(); names.Add("Tim"); names.Add("John"); names.Add("Tom"); names.Add("Kevin");To remove an element, use RemoveWhere.names.RemoveWhere(x => x == "John");Let us see the complete example −Exampleusing System; using System.Collections.Generic; public class Program {    public static void Main() {       var names = ... Read More

All these keywords are part of the main method of any C# program.The Main method, which is the entry point for all C# programs states that what a class does when it executed.using System; class Demo {    static void Main(string[] args) {       Console.WriteLine("My first program in C#!");    } ... Read More

The best IDE for C# on Windows is Microsoft Visual Studio. It is an IDE to develop websites, web apps, mobile apps, etc.The following are the features of Visual Studio IDE −Code Editor − Visual Studio has a code editor supporting syntax highlighting and code completion using IntelliSense.Breakpoints − Set ... Read More

Set three arraysint[] arr1 = {    99,    57,    63,    98 }; int[] arr2 = {    43,    99,    33,    57 }; int[] arr3 = {    99,    57,    42 };Now set the above elements using HashSet.// HashSet One var ... Read More

To make code reusable in C#, use Interfaces. Interfaces define properties, methods, and events, which are the members of the interface. Interfaces contain only the declaration of the members. It is the responsibility of the deriving class to define the members. It often helps in providing a standard structure that ... Read More

Let’s say you need to get the value of 10 dollars in INR.Firstly, set the variables: double usd, inr, val;Now set the dollars and convert it to INR.// how many dpllars usd = 10; // current value of US$ val = 69; inr = usd * val;Let us see the ... Read More

To display a line, Console.Write() is used in C#.Console displays the result on the console. I have first set a string.string str = "Tom Hanks is an actor";Now displaying the above line.Console.WriteLine(str);The following is the complete code −Example Live Demousing System; namespace Program {    public class Demo {     ... Read More

To display multiplication table, you need to set the numbers and format the output property. Let’s say you want to find the table of 4 from 1 to 10. For that, set a while loop first till 10.while (a