Adding attribute to System types

[astruyk]

Is there a way to add an Attribute to an existing type? Like say I
wanted to add a [MyCustomAttribute] to the List<inttype, how would I
go about doing that?

Also is there any way to attach Attributes to types at runtime?

[Bob Powell [MVP]]

You can add attributes to type at runtime but only in a very special
circumstance.

Any object subject to reflection can be given a TypeDescriptionProvider.
This enables the TypeDescriptor to return any custom information yo may
desire, including dynamically created attributes, extra properties and
so-on.

Normally attributes are compiler generated, fixed and only instantiated when
reflection is used.

--
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Visual C#, System.Drawing

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<as*****@gmail.comwrote in message
news:11**********************@f1g2000cwa.googlegro ups.com...

Is there a way to add an Attribute to an existing type? Like say I
wanted to add a [MyCustomAttribute] to the List<inttype, how would I
go about doing that?

Also is there any way to attach Attributes to types at runtime?

[Dave Sexton]

Hi,

Why do you need to add an attribute to an FCL type?

(BTW, you couldn't add an attribute to List<intanyway since it doesn't
exist. List<Tis the class).

You could derive a class from List<intand add a custom attribute to that
if you want.

--
Dave Sexton

<as*****@gmail.comwrote in message
news:11**********************@f1g2000cwa.googlegro ups.com...

Is there a way to add an Attribute to an existing type? Like say I
wanted to add a [MyCustomAttribute] to the List<inttype, how would I
go about doing that?

Also is there any way to attach Attributes to types at runtime?

[astruyk]

I'm using Attributes to indicate to a class what types should be
ignored while processing data using reflection. Using the
TypeDescriptor seems to be working, as long as you check for the
Attribute using the TypeDescriptor and not just the
Type.GetCustomAttributes()...

Dave Sexton wrote:

Hi,

Why do you need to add an attribute to an FCL type?

(BTW, you couldn't add an attribute to List<intanyway since it doesn't
exist. List<Tis the class).

You could derive a class from List<intand add a custom attribute to that
if you want.