A 2-dimensional array is a list of one-dimensional arrays.Two-dimensional arrays may be initialized by specifying bracketed values for each row.int [,] a = new int [4,4] {    {0, 1, 2, 3} ,    {4, 5, 6, 7} ,    {8, 9, 10, 11} ,    {12, 13, 14, 15} };The following is an example showing how to work with two-dimensional arrays in C#.Example Live Demousing System; namespace ArrayApplication {    class MyArray {       static void Main(string[] args) {          /* an array with 3 rows and 2 columns*/          int[,] a = new int[3, 2] {{0,0}, {1,2}, {2,4} };          int i, j;          /* output each array element's value */          for (i = 0; i < 3; i++) {             for (j = 0; j < 2; j++) {                Console.WriteLine("a[{0},{1}] = {2}", i, j, a[i,j]);             }          }          Console.ReadKey();       }    } }Outputa[0,0] = 0 a[0,1] = 0 a[1,0] = 1 a[1,1] = 2 a[2,0] = 2 a[2,1] = 4

Only functions of the same class can access its private members. Private access specifier allows a class to hide its member variables and member functions from other functions and objects.Example Live Demousing System; namespace RectangleApplication {    class Rectangle {       //member variables       private double length;       private double width;       public void Acceptdetails() {          length = 10;          width = 14;       }       public double GetArea() {          return length * width;       } ... Read More

The "as" operator perform conversions between compatible types. It is like a cast operation and it performs only reference conversions, nullable conversions, and boxing conversions. The as operator can't perform other conversions, such as user-defined conversions, which should instead be performed by using cast expressions.The following is an example showing the usage of as operation in C#. Here as is used for conversion.string s = obj[i] as string;Try to run the following code to work with ‘as’ operator in C#.Example Live Demousing System; public class Demo {    public static void Main() {       object[] obj = new object[2]; ... Read More

Initialize the array.int[] myArr = new int[5] {98, 76, 99, 32, 77};Compare the first element in the array with the next element to find the largest element, then the second largest, etc.if(myArr[i] < myArr[j]) {    temp = myArr[i];    myArr[i] = myArr[j];    myArr[j] = temp; }Above, i and j are initially set to.i=0; j=i+1;Try to run the following code to sort an array in descending order.Example Live Demousing System; public class Demo {    public static void Main() {       int[] myArr = new int[5] {98, 76, 99, 32, 77};       int i, j, temp;       Console.Write("Elements: ");       for(i=0;i

Use the substring() method in C# to check each and every substring for unique characters. Loop it until the length of the string.If any one the substring matches another, then it would mean that the string do not have unique characters.You can try to run the following code to determine if a string has all unique characters.Example Live Demousing System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; public class Demo {    public bool CheckUnique(string str) {       string one = "";       string two = "";       for (int i = 0; i ... Read More

C# is a programming language and .NET is a framework. .NET has Common Language Runtime (CLR), which is a virtual component of .NET framework. .NET not only has C#, but through it, you can work with VB, F#, etc. C# is a part of .NET and has the following features − Boolean Conditions Automatic Garbage Collection Standard Library Assembly Versioning Properties and Events Delegates and Events Management Easy-to-use Generics Indexers Conditional Compilation Simple Multithreading LINQ and Lambda Expressions Integration with Windows

Set the minimum and maximum element to the first element so that you can compare all the elements.For maximum.if(arr[i]>max) {    max = arr[i]; }For minimum.if(arr[i]

There are various categories of characters, operators, and constructs that lets you to define regular expressions. One of them is Grouping Constructs. Grouping constructs describe sub-expressions of a regular expression and capture substrings of an input string. The following table lists the grouping constructs. Grouping construct Description Pattern Matches ( subexpression ) Captures the matched subexpression and assigns it a zero-based ordinal number. (\w)\1 "ee" in "deep" (?< name >subexpression) Captures the matched subexpression into a named group. (?< double>\w)\k< double> "ee" in "deep" (?< name1 -name2 >subexpression) Defines a balancing group ... Read More

Gets or sets the value associated with the specified key. You can also use the Item property to add new elements.If a key does not exist, then you can include it like −myCollection["myNonexistentKey"] = myValueThe following is the code showing how to work with Item property of Hashtable class in C#.Example Live Demousing System; using System.Collections; namespace Demo {    class Program {       static void Main(string[] args) {          Hashtable ht = new Hashtable();          ht.Add("One", "Amit");          ht.Add("Two", "Aman");          ht.Add("Three", "Raman");       ... Read More

Var is strictly typed in C#, whereas dynamic is not strictly typed. Var declaration var a = 10; Dynamic declaration dynamic a = 10; A Var is an implicitly typed variable, but it will not bypass the compile time errors. Example of var in C# var a = 10; a = "Demo"; // gives compile error Example of dynamics in C# dynamic a = 10; a = "Demo"; // won’t give error