I've been considering that my objects should subscribe to an event via
a weak reference, however I've found several warnings that this
approach comes with concurrency considerations, like the fact that the
event handler method on the subscriber could be called and be

I am writing a 3D graphing component built upon WPF and would like to have
2D vector graphics (e.g. typeset mathematics) as labels laid out from 3D
coordinates. For example, a tick on an axis has a 3D coordinate and its 2D
label might be right-aligned to the 2D projection of that 3D ...

Is there a code measuring tool that tells you which is more efficient
cost-wise.  For example, if I were to compare the following two
identical code blocks, how do I know, which is more expensive CPU
wise :

  I hope this is the right group for this question. It's hard to
tell. I've been working with .net for a while but only in the last
couple of years have I made the move to c# and oop. I'd appreciate any
recommendation for a book to give me a good quantum leap in design

I just converted this from VB and apparently I need to do something else
in C#.  What is the problem with my select statement.  I'm getting:
Operator '+' cannot be applied to operands of type 'string' and 'method
group'

I have a class which includes a context menu. The class, and context menu, appears to work fine when I run the application but when
I look at the designer for the class I get the errors :
The variable renameSwatchMenuItem is either undeclared or was never assigned.
The variable ...

I would like to write 2 applications. 1st app sends arguments across network
to 2nd app that returns a result, just as you would if it was within same
application.
The argument sent could be some kind of struct e.g.