How to access attributes of a class from within it in C#

Question

I have these attributes for this class, and I am wondering how to access them from within the class. ServedClassName is a custom attribute, and that is the one I am actually trying to access.

[Guid("24889af6-e174-460b-ab52-7fb5a925926e")]
[ServedClassName("ASCOM ProxyClient Telescope")]
[ProgId("ASCOM.DeviceProxyClient.Telescope")]
[ClassInterface(ClassInterfaceType.None)]
public class Telescope : ReferenceCountedObjectBase, ITelescopeV3

To access the ProgID, I use this: Marshal.GenerateProgIdForType(this.GetType());

TypeDescriptor.GetAttributes: msdn.microsoft.com/en-us/library/6w3a7b50%28v=vs.100%29.aspx Type.GetCustomAttributes: msdn.microsoft.com/en-us/library/… — IAbstract
– IAbstract, Commented Feb 28, 2013 at 17:18

John Källén · Accepted Answer · 2013-02-28 17:25:19Z

6

object [] attrs = GetType().GetCustomAttributes(typeof(ServedClassNameAttribute), true);

will give you a list of the custom attributes of type ServedClassNameAttribute on your class. You can then walk through the attribute instances like this:

foreach (ServedClassNameAttribute attr in attrs)
{
    // Do something with attr
}

edited Feb 28, 2013 at 17:25

answered Feb 28, 2013 at 17:18

John Källén

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3 Comments

Arlen Beiler Over a year ago

Wouldn't I use (typeof(...),false)? Visual studio is saying that it doesn't have an overload for just type. Or should I put true there?

John Källén Over a year ago

My bad, I'll fix the answer. You want to use inherit=true if you are deriving from a class that also may have your attribute set on its type. If you only care about whether the current class has the attribute set and not its base class, use inherit=false.

IAbstract Over a year ago

If you just use GetCustomAttributes(bool) (msdn.microsoft.com/en-us/library/kff8s254.aspx), you return all attributes for the current Type instance.

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