C# uses the interface statement along with opening and closing braces to indicate the beginning and end of an interface definition. For example:
public interface IUIService {
// member definitions
}
In VB, an interface definition is indicated by the Interface... End Structure construct:
Public Interface IUIService ' member definitions End Interface
C# uses the colon with interfaces to specify any implemented interfaces. For example:
public interface ISite : IServiceProvider
In VB, any implemented interfaces are specified by an Implements statement on the line immediately following the Interface statement. Hence, the previous definition of ISite in C# would appear as follows in VB:
Public Interface ISite Implements IServiceProvider