A Silverlight Calculator

re: A Silverlight Calculator

kfarmer@microsoft.com — Thu, 27 Mar 2008 05:23:58 GMT

Add a Saturn emulator so I can load an HP49 ROM in the thing :)

Silverlight Extensibility: The Calculator

Brad Abrams — Thu, 27 Mar 2008 10:16:10 GMT

Scott is a devlead I work with and he has been experimenting with how to have an extensibility pattern

re: A Silverlight Calculator

alvinashcraft — Thu, 27 Mar 2008 18:14:36 GMT

Nice-looking calculator. Can't wait to check out the code this weekend. Keep up the great work!

A Silverlight Calculator with pluggable functions and skins

DotNetKicks.com — Thu, 27 Mar 2008 18:34:15 GMT

You've been kicked (a good thing) - Trackback from DotNetKicks.com

You beat me to it...

crpietschmann — Thu, 27 Mar 2008 18:35:58 GMT

Awesome example, and you beat me to it. I actually just started to work up an example of creating a plugin architecture for Silverlight. Thanks!

re: A Silverlight Calculator

sdether — Thu, 27 Mar 2008 20:19:05 GMT

Scott,

I was just digging through the code to learn it's secrets and noticed a block that seems to be disabled. The bit in LoadCommands about loading all ICalculatorCommand implementors uses a query that can never return a value (as near as i can tell):

where type.IsAbstract == false && type.IsAbstract == true && [...]

is that on purpose to disable that bit?

And while i'm at it.. the prior query looks for types that are sealed (and finds them), but i can't see any "sealed" in the declaration of those types. What's going on there?

thanks,

arne

re: A Silverlight Calculator

smccraw — Thu, 27 Mar 2008 23:57:14 GMT

Yeah the

where type.IsAbstract == false && type.IsAbstract == true

has been fixed. It was supposed to say type.IsClass==true for the second clause.

As for sealed, that's how static classes show up in reflection (static classes cannot be inherited from or added to, thus they are sealed).