determine if type is not .net type

[John A Grandy]

Short of brute force , how to determine if a type is not a .net type ...
e.g. a custom type, such as an enum ...

[Marc Gravell]

If you mean to separate types that the core libraries define
(System.dll, etc) from your own types, then there isn't anything built
in. The most generic approach would be to check the declaring assembly
against a list that you pre-define (or perhaps use the strong name
etc).

Marc

[Clive Dixon]

It depends precisely what you mean - it's not entirely clear. If you just
want to know whether the type is an enum or not, check GetType().IsEnum. If
you mean "is it something other than the primitive types int, bool, string
etc." you could check GetType().IsPrimitive or GetType().GetTypeCode(). If
you mean "is it something defined in the framework class library or not",
then you have to try something along the lines of what Marc says.

"John A Grandy" <johnagrandy-at-gmail-dot-comwrote in message
news:OT**************@TK2MSFTNGP03.phx.gbl...

Short of brute force , how to determine if a type is not a .net type ...
e.g. a custom type, such as an enum ...

[John A Grandy]

That's what I was afraid of.

You'd think they'd build this in , it's such an obvious need.
"Marc Gravell" <ma**********@gmail.comwrote in message
news:c8**********************************@m45g2000 hsb.googlegroups.com...

If you mean to separate types that the core libraries define
(System.dll, etc) from your own types, then there isn't anything built
in. The most generic approach would be to check the declaring assembly
against a list that you pre-define (or perhaps use the strong name
etc).

Marc

[Peter Duniho]

On Mon, 29 Sep 2008 16:38:42 -0700, John A Grandy
<johnagrandy-at-gmail-dot-comwrote:

That's what I was afraid of.

You'd think they'd build this in , it's such an obvious need.

How so? To nearly the last one, the vast majority of applications should
never need this information.

In what way is the need so obvious? What makes it such an important thing
to be able to do that you're surprised it's not built-in?

Pete

[Marc Gravell]

Indeed - actually, I like that fundamentally there is no distinction,
and all types are (largely) equal citizens...

Marc