// CS0617: `MyNamedArg' is not a valid named attribute argument. Named attribute arguments must be fields which are not readonly, static, const or read-write properties which are public and not static // Line : 19 using System; [AttributeUsage (AttributeTargets.Class, AllowMultiple = true)] public class SimpleAttribute : Attribute { string name; public readonly string MyNamedArg; public SimpleAttribute (string name) { this.name = name; } } [Simple ("Dummy", MyNamedArg = "Dude!")] public class Blah { public static void Main () { } }