Programming Articles - Page 3160 of 3363

The Array.LongLength property gets a 64-bit integer that represents the total number of elements in all the dimensions of the Array.Let’s say your array of long data type is −long[,] arr1= new long[15, 35];Use the LongLength property to get an integer representing the total number of elements in all dimensions of the Array −arr1.LongLengthLet us see an example to implement the Array.LongLength property of array class −Example Live Demousing System; class Program {    static void Main() {       long[,] arr1= new long[15, 35];       long len1 = arr1.GetLongLength(0);       Console.WriteLine(len1);       Console.WriteLine(arr1.LongLength);    } }Output15 525

The Array.Lenth property in C# is used to find the length of the array.Let’s set the array class first −Array arr = Array.CreateInstance(typeof(String), 3); arr.SetValue("Electronics", 0); arr.SetValue("Clothing", 1); arr.SetValue("Appliances", 2);Now since the array’s length is 3, the Length property will give the result 3 −arr.LengthThe following is the code to implement Array.Length property of array class −Example Live Demousing System; using System.Collections.Generic; using System.Linq; using System.Text; namespace lower {    class Program {       static void Main(string[] args) {          Array arr = Array.CreateInstance(typeof(String), 3);          arr.SetValue("Electronics", 0);         ... Read More

C# provides two techniques to implement static polymorphism −Function overloadingOperator overloadingFunction OverloadingTwo or more than two methods having the same name but different parameters is what we call function overloading in C#.Function overloading in C# can be performed by changing the number of arguments and the data type of the arguments.Let’s say you have a function that prints multiplication of numbers, then our overloaded methods will have the same name but different number of arguments −public static int mulDisplay(int one, int two) { } public static int mulDisplay(int one, int two, int three) { } public static int mulDisplay(int one, ... Read More

The Array.IsReadOnly property gets a value indicating whether the Array is read-only.Firstly, set the array values −Array arr = Array.CreateInstance(typeof(String), 3); arr.SetValue("Electronics", 0); arr.SetValue("Clothing", 1);Now let’s use the IsReadOnly property to find whether the Array is read-only. If the array is read-only, then it cannot be updated −arr.IsReadOnlyThe following is the complete example stating the usage of Array.IsReadOnly property −Example Live Demousing System; using System.Collections.Generic; using System.Linq; using System.Text; namespace lower {    class Program {       static void Main(string[] args) {          Array arr = Array.CreateInstance(typeof(String), 3);          arr.SetValue("Electronics", 0);   ... Read More

The IsFixedSize property of ArrayList class is used to get a value indicating whether the ArrayList has a fixed size.The following is an example stating the usage of isFixedSize property −Example Live Demousing System; using System.Collections; class Demo {    public static void Main() {       ArrayList arrList = new ArrayList();       Console.WriteLine("Adding some numbers:");       arrList.Add(45);       arrList.Add(78);       Console.WriteLine(arrList.Count);       Console.WriteLine("myArrayList.IsFixedSize = " + arrList.IsFixedSize);     } }OutputAdding some numbers: 2 myArrayList.IsFixedSize = FalseAbove we have added an array list −ArrayList arrList ... Read More

The final block is used to execute a given set of statements, whether an exception is thrown or not thrown. For example, if you open a file, it must be closed whether an exception is raised or not.The error handling blocks are implemented using the try, catch, and finally keywords.ExampleYou can try to run the following code to implement finally statement −using System; namespace ErrorHandlingApplication {    class DivNumbers {       int result;       DivNumbers() {          result = 0;       }       public void division(int ... Read More

Encapsulation in C# prevents access to implementation details. Implement Encapsulation in C# using access specifiers.The following are the access specifiers supported by C# −PublicPrivateProtectedInternalProtected internalEncapsulation can be understood by taking an example of private access specifier that allows a class to hide its member variables and member functions from other functions and objects.In the following example we have length and width as variables assigned private access specifier −Example Live Demousing System; namespace RectangleApplication {    class Rectangle {       private double length;       private double width;       public void Acceptdetails() {     ... Read More

Aggregation is a directional relation between objects in C#. It is the relationship between objects.For example, Employee and AddressAn Employee is associated with a single Department, whereas a Department can have more than one employee. Let us see an example of Employee and Address −public class Address {    . . . } public class Employee {    private Address addr;    public Employee (Address addr) {       this.addr = addr;    }    . . . }

Like any other programming language, in C#, you can easily create a user-defined exception. User-defined exception classes are derived from the Exception class. Custom exceptions are what we call user-defined exceptions.In the below example, the exception created is not a built-in exception; it is a custom exception −TempIsZeroExceptionYou can try to run the following code to learn how to create a user-defined exception in C# −Example Live Demousing System; namespace Demo {    class TestTemperature {       static void Main(string[] args) {          Temperature temp = new Temperature();          try {   ... Read More

The User defined data types in C# are structures and enumeration.StructureIn C#, a structure is a value type data type. It helps you to make a single variable hold related data of various data types. The struct keyword is used for creating a structure.The C# structures have the following features −Structures can have methods, fields, indexers, properties, operator methods, and events.Structures can have defined constructors, but not destructors. However, you cannot define a default constructor for a structure. The default constructor is automatically defined and cannot be changed.Unlike classes, structures cannot inherit other structures or classes.Structures cannot be used as ... Read More