Compiler Error CS0729

Type 'type' is defined in this assembly, but a type forwarder is specified for it

You cannot use a type forwarder for a type defined in the same assembly.

Example

The following sample generates CS0729.

// CS0729.cs
// compile with: /target:library
using System.Runtime.CompilerServices;
[assembly:TypeForwardedTo(typeof(TestClass))]   // CS0729
class TestClass {}