多参数到一个表中

Question

如何将1个以上的参数以粗体形式传递给表格？

  NetCoreAuthenicationContext dbContext = new NetCoreAuthenicationContext();

    //Post Api Controller
    [HttpPost]
    public string Post([FromBody] TblUser value)
    {
        //Check exist

==> 如果(dbContext.TblUser.Any(user => user.UserName.Equals(value.UserName)))