interface design question

[neverstill]

Hi-

I designed a control and although I'm the only one that will be using it, I
thought it a good idea to create an interface for it.

First question is how do you add fields to an interface?
I tried:
private interface ITest
{
string Name;
}

and I get a compile error on that.

Are you not supposed to add Fields to an interface?

Thanks for any help,
Steve

 

[Peter Theill]

Are you not supposed to add Fields to an interface?

No, because an interface defines a contract. You do not have an "instance of
an interface" like you have instances of classes. You *are* however able to
define properties which then must be implemented in a class:

interface ITest {
string Name { get; set; }
}

public class MyTest : ITest {
private string name;
public string Name {
get { return this.name; }
set { this.name = value; }
}
}

 

[neverstill]

perfect! That is actually what I wanted, I wanted to enforce the
properties, not the members themselves.
Thanks for the sample, I'm good to go now!

 

[Guest]

Hi

Interface can only events, properties and methods. Fields or private member variables are not allowed in a interface