C# STRUCTURES
In this tutorial, you will learn how to use structure in c#, comparison between c# struct vs class, c# structure example. In this tutorial, you will learn how to use structure in c#, comparison between c# struct vs class, c# structure example.
- Structure is a group of elements having different data types.
- Unlike java, c# supports structures
- In c#, structure is similar to class. Because both class and structures are user defined type
- In c#, it can be created using the reserved word struct
- Like class, it contains variables (instance and static variables) and methods (both instance methods and static methods)
- It also includes constants, methods, properties, indexers and Interfaces, events
- The structure’s members can’t be specified as abstract, sealed, protected, virtual.
ACCESS MODIFIERS IN STRUCTURES
- Like class, it supports only two modifiers like public and internal
- If no modifier is specified, then the internal will be considered the default access modifier
- Like class, the members of the structure are private by default, if no modifier is specified
- It is important to note that protected modifier won’t be allowed for members of the structure.
DIFFERENCE BETWEEN CLASS AND STRUCTURE
| S.N | CLASS | STRUCTURE |
| 1. | It is a reference type in c#. So it will be stored on heap memory | It is a value type in c#. So it will be stored on stack memory |
| 2. | It creates an object (instance) using new keyword | It creates an instance (object) with or without using new keyword (new keyword is an optional) |
| 3. | It is created using the reserved word class | It is created using the reserved word struct |
| 4. | It supports destructors | It does not support destructors |
| 5. | It supports protected modifier to its members | It does not support protected modifier to its members |
I. EXAMPLE OF STRUCTURES
SOURCE CODE
using y = System.Console;
namespace Structures
{
struct employee
{
string ename;
int id;
double salary;
// instance method
void disp()
{
y.WriteLine(“Emp.Name \t: ” + ename);
y.WriteLine(“Emp.Id \t\t: ” + id);
y.WriteLine(“Emp.Salary \t: ” + salary);
}
// main method
static void Main()
{
y.WriteLine(“—————————-“);
y.WriteLine(“\t C# Structures”);
y.WriteLine(“—————————-“);
employee emp = new employee();
emp.ename = “Sachin”;
emp.id = 99;
emp.salary = 95900.50;
emp.disp();
y.WriteLine(“—————————-“);
}
}
}
OUTPUT
POINTS ABOUT STRUCTURES
- It is a value type in c# and stored on stack memory
- Like class, it supports variables and methods
- Like class, it supports parameterized constructors
- Like class, it is internal by default (if no modifier is specified)
- Like class, its members are private by default (if no modifier is used)
- Like class, it includes main method
- Like class, it supports interfaces
- Its members can’t be specified as virtual, sealed, abstract, protected.
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