Compiler Error CS0678

'variable': a field can not be both volatile and readonly

Use of the volatile and readonly keywords is mutually exclusive.

The following sample generates CS0678:

// CS0678.cs  
using System;  
  
class TestClass  
{  
   private readonly volatile int i;   // CS0678  
   // try the following line instead  
   // private volatile int i;  
  
   public static void Main()  
   {  
   }  
}