Compiler Error CS1611

The params parameter cannot be declared as ref or out

The keywords ref or out cannot be used with the params keyword.

The following sample generates CS1611:

// CS1611.cs
public class MyClass
{
   public static void Test(params ref int[] a)   // CS1611, remove ref
   {
   }

   public static void Main()
   {
      Test(1);
   }
}