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Compiler Error CS0513 

Error Message

'function' is abstract but it is contained in nonabstract class 'class'

A method cannot be an abstract member of a nonabstract class.

The following sample generates CS0513:

// CS0513.cs
namespace x
{
   public class clx
   {
      abstract public void f();   // CS0513, abstract member of nonabstract class
   }
}
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