C# Error CS0621 – ‘{0}’: virtual or abstract members cannot be private

C# Error

CS0621 – ‘{0}’: virtual or abstract members cannot be private

Reason for the Error & Solution

‘member’ : virtual or abstract members cannot be private

Private virtual or abstract members are not allowed.

The following sample generates CS0621:

// CS0621.cs  
abstract class MyClass  
{  
   private virtual void DoNothing1()   // CS0621  
   {  
   }  
  
   private abstract void DoNothing2();   // CS0621  
  
   public static void Main()  
   {  
   }  
}