Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How can we call one constructor from another in the same class in C#?
Make use of this keyword in c# to call one constructor from another constructor
To call a constructor which is present in parent class make use of base keyword
Example
class Demo{
public Demo(){
System.Console.WriteLine("Parameter less constructor called");
}
public Demo(int firstNumber, int secondNumber) : this(){
System.Console.WriteLine($"{firstNumber} {secondNumber}");
}
public Demo(int firstNumber, int secondNumber, int thirdNumber) : this(firstNumber, secondNumber){
System.Console.WriteLine($"{firstNumber} {secondNumber} {thirdNumber}");
}
}
class Program{
static void Main(){
Demo obj = new Demo(1, 2, 3);
Console.ReadLine();
}
}Output
Parameter less constructor called 1 2 1 2 3
To call a constructor which is present in another class make use of base keyword
Example
class DemoBase{
public DemoBase(int firstNumber, int secondNumber, int thirdNumber){
System.Console.WriteLine("Base class Constructor");
System.Console.WriteLine($"{firstNumber} {secondNumber} {thirdNumber}");
}
}
class Demo : DemoBase{
public Demo(int firstNumber, int secondNumber, int thirdNumber) : base(firstNumber, secondNumber, thirdNumber){
System.Console.WriteLine("Derived class Constructor");
System.Console.WriteLine($"{firstNumber} {secondNumber} {thirdNumber}");
}
}
class Program{
static void Main(){
Demo obj = new Demo(1, 2, 3);
Console.ReadLine();
}
}Output
Base class Constructor 1 2 3 Derived class Constructor 1 2 3
Updated on: 04-Aug-2020
885 Views
Advertisements