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Found 34488 Articles for Programming
![Ankith Reddy](https://www.tutorialspoint.com/assets/profiles/22328/profile/60_142162-1519038074.jpg)
336 Views
Let’s say we need to find that the following string is Palindrome or not −str = "Level";For that, convert the string into character array to chec each character −char[] ch = str.ToCharArray();Now find the reverse −Array.Reverse(ch);Use the Equals method to find whether the reverse is equal to original array or not −bool res = str.Equals(rev, StringComparison.OrdinalIgnoreCase);The following is the complete code −Example Live Demousing System; namespace Demo { class Program { static void Main(string[] args) { string str, rev; str = "Level"; char[] ch ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
295 Views
Let’s say we want to convert the number 48 to binary.Firstly, set it and use the / and % operators and loop until the value is greater than 1 −decVal = 48; while (decVal >= 1) { val = decVal / 2; a += (decVal % 2).ToString(); decVal = val; }Now, display every bit of the binary as shown in the complete code −Example Live Demousing System; using System.Collections.Generic; using System.Text; namespace Demo { class MyApplication { static void Main(string[] args) { int decVal; ... Read More
![karthikeya Boyini](https://www.tutorialspoint.com/assets/profiles/13518/profile/60_31598-1537784993.jpg)
513 Views
The flow control in try, catch, and finally can be understood using the following example. Here, we are dividing two numbers −Example Live Demousing System; namespace ErrorHandlingApplication { class DivNumbers { int result; DivNumbers() { result = 0; } public void division(int num1, int num2) { try { result = num1 / num2; } catch (DivideByZeroException e) { Console.WriteLine("Exception caught: {0}", e); ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
488 Views
The following states what is an unmanaged code −Applications that are not under the control of the CLR are unmanagedThe unsafe code or the unmanaged code is a code block that uses a pointer variable.The unsafe modifier allows pointer usage in unmanaged code.Here is the module showing how to declare and use a pointer variable. We have used the unsafe modifier here.Let us see the example −Examplestatic unsafe void Main(string[] args) { int var = 20; int* p = &var; Console.WriteLine("Data is: {0} ", var); Console.WriteLine("Address is: {0}", (int)p); Console.ReadKey(); }
![karthikeya Boyini](https://www.tutorialspoint.com/assets/profiles/13518/profile/60_31598-1537784993.jpg)
151 Views
Boxing is implicit and unboxing is explicit. Unboxing is the explicit conversion of the reference type created by boxing, back to a value type.Let us see an example of variable and object in C# −// int int x = 30; // Boxing object obj = x; // Un boxing int unboxInt = (int) obj;The following is an example showing Un boxing −int x = 5; ArrayList arrList = new ArrayList(); // Boxing arrList.Add(x); // UnBoxing int y = (int) arrList [0];
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
87 Views
A jagged array is an array of arrays, and therefore its elements are reference types and are initialized to null.Let us see how to work with Jagged array −Declare a jagged array −int [][] marks;Now, let us initialize it, wherein marks is an arrays of 5 integers −int[][] marks = new int[][]{new int[]{ 40, 57 }, new int[]{ 34, 55 }, new int[]{ 23, 44 }, new int[]{ 56, 78 }, new int[]{ 66, 79 } };Let us now see the complete example of jagged arrays in C# and learn how to implement it −Example Live Demousing System; namespace MyApplication ... Read More
![karthikeya Boyini](https://www.tutorialspoint.com/assets/profiles/13518/profile/60_31598-1537784993.jpg)
1K+ Views
Set two arrays that you wish to merge −int[] arr1 = new int[5] { 5, 15, 25, 30, 47 }; int[] arr2 = new int[5] { 55, 60, 76, 83, 95 };Now take a third array that would merge both the above arrays −int[] merged = new int[10];The following is the code that merges two arrays into the third array in C# −Example Live Demousing System; using System.Collections.Generic; class Program { static void Main() { int i = 0; int j = 0; ... Read More
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
1K+ Views
To get the difference between two lists, firstly set two lists in C# −// first list List < string > list1 = new List < string > (); list1.Add("A"); list1.Add("B"); list1.Add("C"); list1.Add("D"); // second list List < string > list2 = new List < string > (); list2.Add("C"); list2.Add("D"); foreach(string value in list2) { Console.WriteLine(value); }To get the difference, use IEnumerable and Except() as shown below. The difference is shown in the third list −IEnumerable < string > list3; list3 = list1.Except(list2);The following is the complete code −Example Live Demousing System; using System.Collections.Generic; using System.Linq; public class Demo ... Read More
![karthikeya Boyini](https://www.tutorialspoint.com/assets/profiles/13518/profile/60_31598-1537784993.jpg)
13K+ Views
Use the DateTime.TryParseExact method in C# for Date Format validation.They method converts the specified string representation of a date and time to its DateTime equivalent. It checks whether the entered date format is correct or not.Example Live Demousing System; using System.Globalization; namespace Demo { class Program { static void Main(string[] args) { DateTime d; bool chValidity = DateTime.TryParseExact( "08/14/2018", "MM/dd/yyyy", CultureInfo.InvariantCulture, DateTimeStyles.None, out d); Console.WriteLine(chValidity); } } }OutputTrue
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
289 Views
Java has SortedMap Interface, whereas an equivalent of it in C# is SortedList.SortedList collection in C# use a key as well as an index to access the items in a list.A sorted list is a combination of an array and a hash table. It contains a list of items that can be accessed using a key or an index. If you access items using an index, it is an ArrayList, and if you access items using a key, it is a Hashtable. The collection of items is always sorted by the key value.Let us see an example to work with ... Read More