Remove the async/await warning CS1998, when implementing interface

Question

Suppose I implement an interface where there are two methods: Create and CreateAsync . The Async method in my case is not really async, and it uses the syncronous Create method to return the created object:

public Task<GrandeurDTO> CreateAsync()
{
    var dto = Create();
    return Task.FromResult(dto);
}
public GrandeurDTO Create()
{
    var bo = new Grandeur();

    var dto = _mapper.Map<GrandeurDTO>(bo);
    return dto;
}

How should I remove the warning

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(CS1998)

knowing I can't rename the method in Create (I already have one; cause if not the question is similar to this one )

Answer 1

我相信这只是一个疲惫的 Visual Studio 的情况，并且 1）重新编译或 2）VS 重新启动将解决这个问题。