Nhibernate DetachedCriteria：查找属性的属性与值匹配的实体

Question

I have two following classes:

public class User
{
    public virtual Guid Id { get; set; }
    public virtual UserCredentials Credentials { get; set; }

    // other stuff

    protected User() { }
}

public class UserCredentials
{
    public virtual Guid Id { get; set; }
    public virtual string UserName { get; set; }

    // other stuff

    protected UserCredentials() { }
}

I want to create a detached criteria that finds all users where Credentials.UserName = "someuser" , but I cannot get it right.. I have tried the following:

DetachedCriteria.For<User>().Add(Expression.Eq("Credentials.UserName", "someuser");

but I get an exception saying

"could not resolve property: Credentials.UserName of: DataLinkNord.Domain.User"

Any help would be appreciated..

Answer 1

我已经遇到了这个问题（尽管我是Java用户），但是对我来说，解决方法是先使用“ addAlias（）”调用……

DetachedCriteria.For<User>().AddAlias("Credentials", "Credentials").Add(Expression.Eq("Credentials.UserName", "someuser");