c# - How to require custom attribute from base class? -


i have base class derived classes put attribute on top of class this:

[myattribute("abc 123")] public class someclass : mybaseclass {   public someclass() : base()   {   } }   public class mybaseclass {   public string propa { get; set; }    public mybaseclass()   {     this.propa = //attribute value of derived   } }

how enforce derived classes need attribute, use attribute value in base constructor?

maybe instead of using custom attribute use abstract class abstract property. using method ensure every non-abstract derived class implement property. simple example on msdn


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