Server Side Programming Articles - Page 2505 of 2650

To add string values to a list in C#, use the Add() method.Firstly, declare a string list in C# −List list1 = new List();Now add string items −myList.Add("Jack"); myList.Add("Ben"); myList.Add("Eon"); myList.Add("Tim");Let us see the complete code −Exampleusing System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; namespace Demo {    public class Program {       public static void Main(String[] args) {          List myList = new List();          myList.Add("Jack");          myList.Add("Ben");          myList.Add("Eon");          myList.Add("Tim");          Console.WriteLine(myList.Count);       }    } }

To add an element to existing jagged array, just set the value of the element with a new value.Let’s say you need to add an element at the following location −a[3][1]Just set the value −a[3][1] = 500;Above, we accessed the first element of the 3rd array in a jagged array.Let us see the complete code −Exampleusing System; namespace Demo {    class Program {       static void Main(string[] args) {          int[][] x = new int[][]{new int[]{10, 20}, new int[]{30, 40}, new int[]{50, 60}, new int[]{ 70, 80 }, new int[]{ 90, 100 ... Read More

To add integer values to a list in C#, use the Add() method.Firstly, declare an integer list in C# −List list1 = new List();Now add integer values −list1.Add(900); list1.Add(400); list1.Add(300);Let us see the complete code −Exampleusing System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; namespace Demo {    public class Program {       public static void Main(String[] args) {          List list1 = new List();          list1.Add(900);          list1.Add(400);          list1.Add(300);          Console.WriteLine(list1.Count);       }    } }

Firstly, declare a list −var teams = new List();To add items to a C# list, use the Add() method −teams.Add("US"); teams.Add("Canada"); teams.Add("India"); teams.Add("Australia");You can try to run the following code to add items to a list in C# −Exampleusing System; using System.Collections.Generic; public class Demo {    public static void Main(string[] args) {       var teams = new List();       teams.Add("US");       teams.Add("Canada");       teams.Add("India");       teams.Add("Australia");           Console.WriteLine("Elements...");       foreach (var countries in teams) {          Console.WriteLine(countries);       }    } }

Use the substring() method in C# to find all substrings in a string.Let’s say our string is −pqrLoop through the length of the string and use the Substring function from the beginning to the end of the string −for (int start = 0; start

A file is a collection of data stored in a disk with a specific name and a directory path. When a file is opened for reading or writing, it becomes a stream.In C#, you need to create a FileStream object to create a new file or open an existing file. The syntax for creating a FileStream object is as follows −FileStream = new FileStream( , , , );Here, the file operations are also included as shown below −The FileMode enumerator defines various methods for opening files. The members of the FileMode enumerator are −Append − It opens an existing ... Read More

The System.Reflection namespace contains classes that allow you to obtain information about the application and to dynamically add types, values, and objects to the application.It has a module constructor that initializes a new instance of the Module class. A module is a portable executable file that has one or more classes and interfaces.Let us see an example of System.Reflection in C# −Exampleusing System; using System.Reflection; [AttributeUsage(AttributeTargets.All)] public class HelpAttribute : System.Attribute {    public readonly string Url;    public string Topic // Topic is a named parameter {       get {          return ... Read More

Character literals are enclosed in single quotes. For example, 'x' and can be stored in a simple variable of char type. A character literal can be a plain character (such as 'x'), an escape sequence (such as '\t'), or a universal character (such as '\u02C0').Let us see an example how to define a character constant in C# −using System; namespace Demo {    class Program {       static void Main(string[] args) {          Console.WriteLine("Welcome!\t");          Console.WriteLine("This is it!");          Console.ReadLine();       }    } }Above, we ... Read More

Use the param keyword to get the variable arguments in C#.Let us see an example to multiply integers. We have used params keyword to accept any number of int values −static int Multiply(params int[] b)The above allows us to find multiplication of numbers with one as well as two int values. The fllowing calls the same function with multiple values −int mulVal1 = Multiply(5); int mulVal2 = Multiply(5, 10);Let us see the complete code to understand how variable arguments work in C# −Exampleusing System; class Program {    static void Main() {       int mulVal1 = Multiply(5); ... Read More

To create, move and delete directories in C#, the System.IO.Directory class has methods.Firstly, import the System.IO namespace.Now, use the Director.CreateDirectory() method to create a directory in the specified path −string myDir = @"D:\NEW"; if (!Directory.Exists(myDir)) {    Directory.CreateDirectory(myDir); }In the same way, you can create a sub-directory −string mysubdir = @"C:\NEW\my\"; Directory.CreateDirectory(mysubdir);