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Compiler Error CS0617

'reference' is not a valid named attribute argument because it is not a valid attribute parameter type

An attempt was made to access a private member of an attribute class.

The following sample generates CS0617.

// CS0617.cs
using System;

[AttributeUsage(AttributeTargets.Struct | 
                AttributeTargets.Class |
                AttributeTargets.Interface)]
public class MyClass : Attribute
{
   public int Name;

   public MyClass (int sName)
   {
      Name = sName;
      Bad = -1;
      Bad2 = -1;
   }

   public readonly int Bad;
   public int Bad2;
}

[MyClass(5, Bad=0)] class Class1 {}   // CS0617
[MyClass(5, Bad2=0)] class Class2 {}

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