Which interface's method Add2values(param 1, param 2) will be called?

Subhrat Singh

// interface 1 public interface IStudents { public int Add2values(int a, int b); } // interface 2 public interface IStudents2 { public int Add2values(int a, int b); } //class inherit 2 interfaces public class Students : IStudents, IStudenst2 { public int Add2values(int a, int b) { return a+b; } } // in home controller public IActionResult Index() { Students students = new Students(); int res = students.Add2values(20, 30); return View(); } // the question is interface IStudensts or IStudenst2 will be called to calculate the sum? Thanks and will be appreciated?

2 Replies

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

Jayraj Chhaya2y ago
the class Students inherits from two interfaces: IStudents and IStudents2. Both interfaces have a method named Add2values with the same signature.

However, when the Add2values method is called on an instance of the Students class, the method from the interface IStudents will be called to calculate the sum.

This is because the Students class explicitly implements the Add2values method from the IStudents interface. By doing so, it indicates that it intends to use the implementation provided by the IStudents interface.

If the Students class wanted to use the implementation from the IStudents2 interface instead, it would need to explicitly implement that interface's Add2values method.

Therefore, in the given code snippet, the interface IStudents will be called to calculate the sum.
```
public class Students: IStudents, IStudents2
{
    public int Add2values(int a, int b)
    {
        return a + b;
    }
}
```
I hope this clarifies which interface's method will be called in the given scenario. Let me know if you have any further questions!
+4
Jignesh Kumar2y ago
It will not call any of interface. You have created object of Students class and class have same method implementation so it will direct refer class method.

Incase more then one interface have method with same name then you have to call explicit interface to call specific method. please refer this link

https://www.c-sharpcorner.com/UploadFile/8911c4/implicit-and-explicit-interface-examples/
+3