How do you put a Func in a C# attribute (annotation)?

Question

I have a C# annotation which is :

[AttributeUsage(AttributeTargets.Method)]
public class OperationInfo : System.Attribute {
    public enum VisibilityType {
         


        

Answer 1

From the C# spec:

17.1.3 Attribute parameter types

The types of positional and named parameters for an attribute class are limited to the attribute parameter types, which are:

· One of the following types: bool, byte, char, double, float, int, long, sbyte, short, string, uint, ulong, ushort.

· The type object.

· The type System.Type.

· An enum type, provided it has public accessibility and the types in which it is nested (if any) also have public accessibility (§17.2).

· Single-dimensional arrays of the above types.