Question

鉴于以下内容：

SQL：

SuperClassTable
|
 --> NumberSet (varchar(MAX))
     Sample data: '110,111,112,113,114'

SubClassTable
|
 --> NumberSubSet (varchar(MAX))
     Sample data: '110,111,112'

SP_GetClassTables
|
 --> Returns the two tables above joined on an id, based on that id.

模型：

public class SuperClass {
    public IEnumerable<String> NumberSet { get; set; }
}

public class SubClass : SuperClass {
    public IEnumerable<String> NumberSubSet { get; set; }
}

MAPPER：

var superMapping = CreateMap<DbSuperClass, SuperClass>();
superMapping.ForMember(dest => dest.NumberSet,
                opt =>
                    opt.MapFrom(
                        src =>
                            !String.IsNullOrWhiteSpace(src.numberSet)
                                ? src.numberSet.Split(',')
                                    .Select(s => s.Trim())
                                    .ToEnumerable()
                                : null));

// Both of these map the comma-delimited varchars to 
//     the IEnumerable<String>s in the models.

var subMapping = CreateMap<DbSubClass, SubClass>();
subMapping.ForMember(dest => dest.NumberSubSet,
                opt =>
                    opt.MapFrom(
                        src =>
                            !String.IsNullOrWhiteSpace(src.numberSubSet)
                                ? src.numberSubSet.Split(',')
                                    .Select(s => s.Trim())
                                    .ToEnumerable()
                                : null));

控制器：

public class Repo{
    public SubClass Get(int id) {
        var subClassEntry =
            Context.Database.Query<DbSubClass>("SP_GetClassTables", new {value = id},
                commandType: CommandType.StoredProcedure).FirstOrDefault();
        var entry = Map(subClassEntry); // In-house method to take care of the mapping
        return entry;
    }
}

public class SubClassController {
    protected Repo _repo;
    // ...
    public ActionResult Edit(int id) {
        var model = _repo.Get(id);
        return View(model);
    }
}

查看：

@model SubClass
<p>
    NumberSet: @(Model.NumberSet == null || !Model.NumberSet.Any() ? 
                    "N/A" 
                    : ( Model.NumberSet.Count() > 1 
                        ? String.Join(",", Model.NumberSet) 
                        : Model.NumberSet.FirstOrDefault().Trim() )
                )
</p>
<p>
    NumberSubSet:  @(Model.NumberSubSet == null || !Model.NumberSubSet.Any() ? 
                        "N/A"
                        : ( Model.NumberSubSet.Count() > 1 
                            ? String.Join(",", Model.NumberSubSet) 
                            : Model.NumberSubSet.FirstOrDefault().Trim() )
                    )
</p>

产生

NumberSet: 1,1,0,,,1,1,1,,,1,1,2,,,1,1,3,,,1,1,4

NumberSubSet: 110,111,112

我几乎完全不知道为什么会这样做。我尝试从映射器中删除Splitting，它创建了相同的逗号混乱。任何想法都是最受欢迎的。

（注意：这是一个更为复杂的设计，为了简洁起见我尽量简化，但我可能在这个过程中不小心遗漏了一两个重要的细节。我提前道歉！）

Answer 1

我修好了。未在SuperClass.NumberSet字段的mapper类中调用映射器配置。愚蠢的错误。

有关逗号分隔的varchar字段的自动映射映射问题

1 个答案: