I have 2 interfaces as you can see :
public interface i1
{
void add(news a);
}
and
public interface i2
{
void add(file f);
}
These two interface has own implementation .I want to crate another interface called i3 that inherit both i1 and i2 and uses their implementation ?How can i do that?
public interface i3:i1,i2
{
}
In fact i want to get all methods inside i3 using i2,i1 implementation .because the implementation of i3 for that methods is same .
I'm not understanding your question, but this compiles properly
public interface I1
{
int One { get; set; }
}
public interface I2
{
int Two { get; set; }
}
public interface I3 : I1, I2
{
int Three { get; set; }
}
// Implementation of I3 (which inherits I1 and I2)
public class Foo : I3
{
public int One { get; set; }
public int Two { get; set; }
public int Three { get; set; }
}
I3interface has to do with WCF at all. Have a quick read learn.microsoft.com/en-us/dotnet/articles/csharp/…Interface is for declaration not for implementation. Instead you should declare whatever you want in i3 and inherit all your interfaces in class
public interface i1
{
int Add(int num1, num2);
}
public interface i2
{
int Multiply(int num1, num2);
}
public interface i3
{
int Divide(int num1, num2);
}
public class Mathematics: i1, i2, i3
{
public int Add(int num1, int num2)
{
//Your implementation
}
public int Multiply(int num1, int num2)
{
//Your implementation
}
public int Divide(int num1, int num2)
{
//Your implementation
}
}
If inheriting interface by interface itself is intended like
ICollection<T>
interface does you can inherit like a class inherit interface.
public interface i1
{
int Add(int num1, int num2);
}
public interface i2
{
int Multiply(int num1, num2);
}
public interface i3 : i1, i2
{
int Divide(int num1, int num2);
}
public class Mathematics: i3
{
public int Add(int num1, int num2)
{
//Your implementation
}
public int Multiply(int num1, int num2)
{
//Your implementation
}
public int Divide(int num1, int num2)
{
//Your implementation
}
}
Thus, when you inherit i3 in a class you will get everything you have declared in i1, i2, and i3. While inheriting i1 will provide only i1 memebers similarly for i2.
