C# Error CS0677 – ‘{0}’: a volatile field cannot be of the type ‘{1}’

C# Error

CS0677 – ‘{0}’: a volatile field cannot be of the type ‘{1}’

Reason for the Error & Solution

‘variable’: a volatile field cannot be of the type ‘type’

Fields declared with the volatile keyword must be one of the following types:

• Any reference type

• Any pointer type (in an unsafe context)

• The types sbyte, byte, short, ushort, int, uint, char, float, bool

• Enum types based on any of the above types

The following sample generates CS0677:

// CS0677.cs  
class TestClass  
{  
   private volatile long i;   // CS0677  
  
   public static void Main()  
   {  
   }  
}