Below is a C# program to find Age from a Date of Birth. Enjoy! public class Person    {        public string Name { get; set; }        public Person(DateTime birthdate)        {            BirthDate = birthdate;        }        public DateTime BirthDate { get; private set; }        public int Age{                        get {                 var timeSpan = DateTime.Today – BirthDate;                var years = timeSpan.Days / 365;                return years;                                        }        }    }    public class Program    {        public static void Main(string[] argvs)        {            var person = new Person(new DateTime(1998,2,14));                        Console.WriteLine(person.Age);        }    }

Lets see how to use params modifier in C#. The perfect example is Calculator implementation. ‘params’ access modifier when used on a method argument, allows it to accept multiple argument values. Lets see the simple Calculator implementation below. As you can see, method argument ‘numbers’ is defined as integer array and being called out by…

LINQ or Language Integrated Query gives the capability to query objects and C# allows two distinctive ways to achieve this – You can either use LINQ query operators model or LINQ extension methods model with Lamba expressions on Func<> delegate. We have –  LINQ to Objects – Objects in memory eg: Collections ·       LINQ to Entities…

Below is very simple usage of DateTime – class DateTimePr     {         static void Main(string[] args)         {             var datetime = new DateTime();             var now = DateTime.Now;             var today = DateTime.Today;             Console.WriteLine(now);             Console.WriteLine(today);             Console.WriteLine(now.Hour);             Console.WriteLine(now.ToLongDateString());             Console.WriteLine(now.ToString());         }     }

Below is a simple program in C# that reads a file and outputs the longest word in it. Enjoy! using System; using System.IO; using System.Collections.Generic; namespace <yourNS> {     class FilesNDirs     {         public static void Main(string[] argvs)         {             var path = @”C:\Users\deepesh\Desktop\Test\test.txt”;             var textFile = File.ReadAllText(path);             var words = textFile.Split(‘ ‘);             var wordlenpt = new string[100];             var wordlenarr = new List<int>();             foreach (var i in words)             {                 if (i.Length > 0)                 {                     wordlenarr.Add(i.Length);                     wordlenpt[i.Length] = i;                     Console.WriteLine(i);                 }             }             wordlenarr.Sort();             foreach (var i in wordlenarr)             {                 Console.WriteLine(i);             }             Console.WriteLine(“\n\nLargest word in the file is >>” +  wordlenpt[wordlenarr[wordlenarr.Count – 1]]);         }     } }

Below is a simple program to find the lowest number from a list of numbers – using System; using System.Collections.Generic; namespace GroundCSApp {     class GetSmallest     {         public static void Main(string[] argvs)         {             var numlist = new List<int> { 1, 2, 3, 4, 5, 6 };             var finallst = GetSmallests(numlist, 3);             foreach (var i in finallst)             {                 Console.WriteLine(i);             }         }         public static List<int> GetSmallests(List<int> lst, int cnt)         {             if (cnt > lst.Count)             {                 throw new ArgumentOutOfRangeException(“cnt”, “Count of numbers is  greater than the list count”);             }             var buff = lst;             var smalllst = new List<int>();             while (buff.Count > cnt)             {                 var min = GetiSmallest(buff);                 smalllst.Add(min);                 buff.Remove(min);             }             return smalllst;         }         public static int GetiSmallest(List<int> lsti)         {             var min = lsti[0];             for (var j = 1; j < lsti.Count; j++)             {                 if (lsti[j] < min)                 {…

Here is some basic, simple, handy C# programs for you to enjoy and refresh your memory – using GroundCSApp; using System; using System.Collections.Generic; using System.Linq; namespace GroundCSApp {     public enum ShippingMethod     {         Regular = 1,         Priority = 2,         Snail = 3     }     class Program     {         static void Main(string[] args)         {             //——————————————————-             //non -primitive/reference type eg: number              //array creation and assignment                          var numbers = new int[3];             numbers[0] = 23;             var numbers2 = numbers;             numbers[0] = 24;             Console.WriteLine(“Value of variable numbers is changed  and it is >>” + numbers[0]);             //——————————————————–             //——————————————————–             //non-primitive, immutable, string array creation assignment             var names = new string[3] { “John”, “Luke”, “Mark” };             //String Join example             var joinedName = string.Join(“,”, names);             Console.WriteLine(“\n\n” + joinedName);             var strArray = new string[] { “Text”, “Book”, “Light” };             var strArray2 = strArray;             //example for reference type where             //original value is modified             strArray2[0] = “Candle”;…

Well, C# provides this option to prove that it is flexible. If you are too fond of dynamic typing, use scripting languages such as PHP! Below is an example of how to use it – you will see that program will compile without errors and will display two different values for a as intended –…

C# Indexers is a simple implementation of key/value pairs using Dictionary type. Below is a sample implementation of a telephone directory –TelephoneDirectory class using System.Collections.Generic; namespace Indexers {     public class TelephoneDirectory     {         private readonly Dictionary<string, string> _dictionary = new Dictionary<string, string>();         public string this[string key]         {             get { return _dictionary[key]; }             set { _dictionary[key] = value; }         }     } } As seen above, we use the ‘this[]’ notation to create the public property that sets/returns indexed value. We…