When designing applications, it is important to know when to use an abstract class and when to use an interface. Although abstract classes and interfaces seem similar in some ways, there are key ...

First off, let’s get an understanding of interfaces and why they are needed in programming. An interface is strictly a contract; it doesn’t have any implementation. An interface contains only ...

The System.IComparable interface in the .NET Framework is a good example. Object comparison is common in programming. Microsoft can't know every way you might compare objects, so it defined an ...

thanks<BR>everything you suggested works, except i can't use 'as' to convert from the interface to the struct. i have to use a regular cast for that (because structs are not reference types, the ...