新增at lambda作为参数

本文关键字：参数 lambda at 新增 | 更新日期: 2023-09-27 18:15:40

我是新来的，有人能告诉我这是如何工作的，什么在"mycode"为了调用存储库?

public class MemberService : ServiceBase<IMemberModel>, IMemberService
{        
    public MemberViewModel GetSingle(Expression<Func<MemberViewModel, bool>> whereCondition)
    {
        mycode     
    }
}
public abstract class RepositoryBase<T> : IRepository<T>
{
    public T GetSingle(Expression<Func<T, bool>> whereCondition)
    {
       return ObjectSet.Where(whereCondition).FirstOrDefault();
    }
}

谢谢!

新增at lambda作为参数

您需要的可能是基于Member的lambda，而不是MemberViewModel。你的方法应该像这样:

public MemberViewModel GetSingle( Expression<Func<Member,bool>> whereCondition )
{
    var member = this.MemberRepository.GetSingle( whereCondition );
    if (member != null)
    {
        return new MemberViewModel( member );
       // or however you map from member to its view model
    }
    return null;
}