C# Error CS0610 – Field or property cannot be of type ‘{0}’

C# Error

CS0610 – Field or property cannot be of type ‘{0}’

Reason for the Error & Solution

Field or property cannot be of type ‘type’

There are some types that cannot be used as fields or properties. These types include System.ArgIterator and System.TypedReference.

The following sample generates CS0610 as a result of using System.TypedReference as a field:

// CS0610.cs  
public class MainClass  
{  
   System.TypedReference i;   // CS0610  
   public static void Main ()  
   {  
   }  
  
   public static void Test(System.TypedReference i)   // OK  
   {  
   }  
}