无法将类型Generic.List隐式转换为模型类型

Question

检查下面的代码。问题来自lk_GetThirdpartyDataByAsins存储过程，我正在获取ThirdPartyData模型类型数据，但错误表明它无法将其转换为ThirdPartyData。有什么办法解决吗？预先感谢

错误图片：

using (var ctx = new db_exampleEntities())
{
    string patternedString = string.Join("", itemstoUpdate.Select(tpdToString));
    ThirdPartyData MissedData = ctx.lk_GetThirdpartyDataByAsins(patternedString, itemstoUpdate.FirstOrDefault().Type).ToList();
    itemstoUpdate.AddRange(MissedData);
}

Answer 1

您正在尝试将List<ThirdPartyData>转换为ThirdPartyData

更改此行：

ThirdPartyData MissedData = ctx.lk_GetThirdpartyDataByAsins(patternedString, itemstoUpdate.FirstOrDefault().Type).ToList();

至：

         List<ThirdPartyData> MissedData = ctx.lk_GetThirdpartyDataByAsins(patternedString, itemstoUpdate.FirstOrDefault().Type)
         .Select(s=> new ThirdPartyData(){
               a= s.a,
               ...
               z=s.z
            }).ToList()