C# Error CS0735 – Invalid type specified as an argument for TypeForwardedTo attribute

C# Error

CS0735 – Invalid type specified as an argument for TypeForwardedTo attribute

Reason for the Error & Solution

Invalid type specified as an argument for TypeForwardedTo attribute

The following sample generates CS0735.

// CS735.cs  
// compile with: /target:library  
using System.Runtime.CompilerServices;  
[assembly:TypeForwardedTo(typeof(int[]))]   // CS0735  
[assembly:TypeForwardedTo(typeof(string))]   // OK