Why we can't use access modifier with interface method

dhaval undaviya

13y1.5kVisual Basic .NET

public interface Class1

{

public void LoadData();

void UpdateData();

void IntializeData();

string Make { get; set; }

}

I want to know the reason please any one can help.

6 Replies

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Abhineet Srivastava13y ago
Got it.

Thanks
Vulpes13y ago
Here's an example which uses a private interface.

You'd only use these in practice when you have a complex system of nested classes and you want some of them to implement the interface:

using System;

public class MyClass
{
private interface IFace
{
void MyMethod();
}

public class MyNestedClass1 : IFace
{
public void MyMethod()
{
Console.WriteLine("Hello from MyNestedClass1");
}
}

public class MyNestedClass2 : IFace
{
public void MyMethod()
{
Console.WriteLine("Hello from MyNestedClass2");
}
}
}

class Test
{
static void Main()
{
var mnc1 = new MyClass.MyNestedClass1();
mnc1.MyMethod();
var mnc2 = new MyClass.MyNestedClass2();
mnc2.MyMethod();
Console.ReadKey();
}
}
Abhineet Srivastava13y ago
As per as I read, Interface only have Public modifier & Abstract class have any one of these modifier.

Cheers
Abhineet Srivastava13y ago
Hiya Vulpes,

One confusion--

What will the use of Interface with Private access modifier?

Cheers
Vulpes13y ago
All members of an interface are implicitly public.

Rather than insist on adding the public access modifier to every member, the C# design team evidently felt - in the interests of brevity - that it was better not to allow any access modifiers at all.

Note though that the interface itself can have any of the access modifiers : public, internal, protected, protected internal or private. If no access modifier is specified, a 'top level 'interface is internal and a 'nested' interface is private by default.
Abhineet Srivastava13y ago
Interface is a about to be global i.e, can be access anywhere from programme so it always be public.