Question

我正在尝试将数据绑定到表单，但我不断收到以下错误：

AbDesktop.FrmCreditCards.tmpData是一个'字段'，但用作“类型”。

这是导致错误的代码，任何和所有帮助都将不胜感激。

public partial class FrmCreditCards : Form
    {
        tmpCreditCardData tmpData = new tmpCreditCardData() { CreditCardName = "Reece" };
        private HotelConferenceEntities db = new HotelConferenceEntities();
        private tblCreditCard databaseAccessObject;
        private tmpData dataTransferObject;


        public void databinding()
        {
            // Create forward map using AutoMapper - from database to dataTransfer
            AutoMapper.Mapper.CreateMap<tblCreditCard, tmpData>()
                .ForMember(dest => dest.Name, opt => opt.MapFrom(src => src.CreditCardName));

            // Create reverse map using AutoMapper - from dataTransfer to database
            AutoMapper.Mapper.CreateMap<tmpData, tblCreditCard>()
                .ForMember(dest => dest.CreditCardName, opt => opt.MapFrom(src => src.Name));

        }

Answer 1

CreateMap的泛型参数是个问题。您必须使用类型tmpCreditCardData而不是变量名tmpData作为编译错误。

        // Create forward map using AutoMapper - from database to dataTransfer
        AutoMapper.Mapper.CreateMap<tblCreditCard, tmpCreditCardData>()
            .ForMember(dest => dest.Name, opt => opt.MapFrom(src => src.CreditCardName));

        // Create reverse map using AutoMapper - from dataTransfer to database
        AutoMapper.Mapper.CreateMap<tmpCreditCardData, tblCreditCard>()
            .ForMember(dest => dest.CreditCardName, opt => opt.MapFrom(src => src.Name));

Answer 2

您对类型和字段使用相同的名称 - 将字段tmpData重命名为其他内容 - 即：

    tmpCreditCardData tmpData2 = new tmpCreditCardData
      { CreditCardName = "Reece" };

有一些关于约定的注释 - 约定指定类应以大写字母开头并命名为

MyFavouriteClass

和字段应该命名为

myFavouriteField

（以小写字母开头）

有人还将私人字段与下划线区分开来

private MyFavouriteClass _myFavouriteField

如果坚持使用它们，就不应该遇到这个问题。

对象是一个字段但是像一个类型一样使用？

2 个答案: