Compiler Error CS0620

Indexers cannot have void type

The return type of an indexer cannot be void. An indexer must return a value.

The following sample generates CS0620:

// CS0620.cs
class MyClass
{
   public static void Main()
   {
      MyClass test = new MyClass();
      System.Console.WriteLine(test[2]);
   }

   void this [int intI]   // CS0620, return type cannot be void
   {
      get
      {
         // will need to return some value
      }
   }
}

See Also

Reference

void (C# Reference)