C # unable to embed the interoperability Type XXX. XXX. Check whether the reference set solution is missing.

Yesterday I wrote a code, followed by a tutorial, and then the miraculous discovery made it impossible to compile and pass the code, and it was unable to embed the interoperability type. At that time, I went crazy, the solution is as follows:

Change the "Interoperability type" attribute of the referenced assembly to false. The default value is true.

The attribute is unknown. Different VS versions are unknown. In general, click the reference folder to reference the assembly, right-click it, and choose View attribute or some to directly display its attribute interface, you can find it ....