Inherited attributes
.net, attributes, c#, inheritance
Solution
The inherited flag dictates whether the attribute can be inherited. The default for this value is false. However, if the inherited flag is set to true, its meaning depends on the value of the AllowMultiple flag. If the inherited flag is set to true and the AllowMultiple flag is false, the attribute will override the inherited attribute. However, if the inherited flag is set to true and the AllowMultiple flag is also set to true, the attribute accumulates on the member.
from http://aclacl.brinkster.net/InsideC/32ch09f.htm Check the chapter Specifying Inheritance Attribute Rules
EDIT: check Inheritance of Custom Attributes on Abstract Properties The first answer:
It's the GetCustomAttributes() method that does not look at parent declarations. It only looks at attributes applied to the specified member.
Problem
Attribute code ``` [AttributeUsage(AttributeTargets.Property, Inherited = true)] class IgnoreAttribute : Attribute { } ``` Base class ``` abstract class ManagementUnit { [Ignore] public abstract byte UnitType { get; } } ``` Main class ``` class Region : ManagementUnit { public override byte UnitType { get { return 0; } } private static void Main() { Type t = typeof(Region); foreach (PropertyInfo p in t.GetProperties()) { if (p.GetCustomAttributes(typeof(IgnoreAttribute), true).Length != 0) Console.WriteLine("have attr"); else Console.WriteLine("don't have attr"); } } } ``` Output: `don't have attr` Explain why this is happening? After all, it must inherited.