Assembly: custom attributes

[julien]

Hello,
my program loads a couple of DLLs. I use System.Reflection to obtain
information about them.

I a DLL, I have:
[assembly:AssemblyTitle("First plugin")]
[assembly:AssemblyCompany("MySelf")]
[assembly:AssemblyProduct("My first plugin")]

I tried to retrive these information in my program. RIght now, I can get
the types:
Object[] myAttributes = asm.GetCustomAttributes(false); //asm est un
Assembly
for(int i = 0; i < myAttributes.Length; i++)
{
Console.WriteLine("attribute {0}", myAttributes[i]);
}

=>
attribute System.Reflection.AssemblyProductAttribute
attribute System.Reflection.AssemblyCompanyAttribute
attribute System.Reflection.AssemblyTitleAttribute

But then I'm not able to get the values ("MySelf", "First plugin", ...).

Thank you

Julien

[Mattias Sjögren]

But then I'm not able to get the values ("MySelf", "First plugin", ...).

Here's how to get "MySelf". The same principle can be used for the
other attributes.

AssemblyCompanyAttribute aca = myAttributes[i] as
AssemblyCompanyAttribute;
if ( aca != null )
Console.WriteLine( aca.Company );

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

[julien]

Mattias Sjögren wrote:

But then I'm not able to get the values ("MySelf", "First plugin", ...).

Here's how to get "MySelf". The same principle can be used for the
other attributes.

AssemblyCompanyAttribute aca = myAttributes[i] as
AssemblyCompanyAttribute;
if ( aca != null )
Console.WriteLine( aca.Company );

Mattias

Thank you. But this means I know all the potential attributes name
before I load the DLL. How can I do if I don't know the different types?
Julien

[Mattias Sjögren]

How can I do if I don't know the different types?

Use Reflection on the attribute objects.

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

[julien]

Mattias Sjögren wrote:

How can I do if I don't know the different types?

Use Reflection on the attribute objects.

Mattias

Actually, I thought I could create any CustomAttribute I want, but it
looks like the list of CustomAttribute is already define (i.e.
AssemblyMyVariable cannot be created).

Thanks
Julien

[Sean Hederman]

You can create and use attributes as you see fit:

[AttributeUsage(AttributeTargets.Assembly)]
public class MyCustomAttribute : Attribute {
....
}

in AssemblyInfo.cs:
[assembly: MyCustomAttribute()]

"julien" <ju****@sobrier.net> wrote in message
news:42*********************@news.free.fr...

Mattias Sjögren wrote:

How can I do if I don't know the different types?

Use Reflection on the attribute objects.

Mattias

Actually, I thought I could create any CustomAttribute I want, but it
looks like the list of CustomAttribute is already define (i.e.
AssemblyMyVariable cannot be created).

Thanks
Julien