Dervied class Constructor value pass to parent class

Seshadri M

I am trying to pass the value from child class to parent class constructor. But

class Class1
{

public Class1(int a, int b) {
this.a = a;
this.b = b;
Console.WriteLine("parentconstructor");
}
}
class Class2: Class1 {

public Class2(int a, int b): base(a, b) {

Console.WriteLine("childconstructor");
}
}

class program

{

class2 obj =new class2( 4,5);

Console.ReadLine();

}

//OUTPUT

//Parentconstructor

//childconstriuctor

// But excepted child constructor first an second parentconstructor

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Upendra Pratap Shahi9y ago
https://stackoverflow.com/questions/4296888/c-sharp-making-all-derived-classes-call-the-base-class-constructor
0
Tapan Patel9y ago
As Vishwash suggested, you cannot change the behavior but you can definitely change the sequence of the executions by converting your constructor code to method call.

Meaning, put your code into methods and then call child class method first and your child class method would make a call to base class method (if order really matters in your case). Or else, (if possible), swap the class heirarchy to execute things in order.
0
Ankit Sharma9y ago
Hi Seshadri,

Please refer to below links

https://stackoverflow.com/questions/12051/calling-the-base-constructor-in-c-sharp

https://stackoverflow.com/questions/23481456/passing-parameters-to-the-base-class-constructor

hope this helps
0
Vishwash Roy9y ago
According to the rule of OOPS Inheritence Calling of constructor will be like given below.

1. Base Constructor(Parent Constructor)
2. Derived Constructor(child constructor)

We cannot change the sequence of calling constructor.
+1