C# 无法将Linq结果强制转换为现有预定义模型

我得到的错误如下

//Able to get result from SP here 
List obj_Candidate_Geographies_List = 
    DBEntity.sp_GetCandidateEntityDataByFunctionTypeIdAndLevel(
        Convert.ToInt32(FunctionTypeEnum.Geography),
        Convert.ToInt32(EntityLevel.Undefined)
    ).ToList();

//Not able to convert to predefined model here 
IQueryable obj_Candidate_Geographies_Attributes_List = 
    (from c in DBEntity.Candidates.ToList() 
        join p in DBEntity.vw_Candidate_AttributesNew.ToList() 
            on c.CandidateId equals p.CandidateId 
        join q in obj_Candidate_Geographies_List 
            on c.CandidateId equals q.CandidateId 
    select new 
            { 
                CandidateId = c.CandidateId, 
                FirstName = q.FirstName, 
                LastName = q.LastName, 
                GeographyId = q.GeographyId, 
                GeographyName = q.GeographyName, 
                SkillId = p.SkillId, 
                SkillName = p.SkillName, 
                CreatedOn = c.CreatedOn, 
                ModifiedOn = c.ModifiedOn 
            }
        );

//Predefined Model
public class CandidateGeographiesAttributes 
{ 
    public int CandidateId { get; set; } 
    public string FirstName { get; set; } 
    public string LastName { get; set; } 
    public int GeographyId { get; set; } 
    public string GeographyName { get; set; } 
    public int SkillId { get; set; } 
    public string SkillName { get; set; } 
    public DateTime CreatedOn { get; set; } 
    public DateTime ModifiedOn { get; set; } 
}

无法从“System.Collections.Generic.IEnumerable AnonymousType”转换为“System.Collections.Generic.IEnumerable WebUI.DataModels.CandidateGraphiesAttributes”

我的代码如下

//Able to get result from SP here 
List obj_Candidate_Geographies_List = 
    DBEntity.sp_GetCandidateEntityDataByFunctionTypeIdAndLevel(
        Convert.ToInt32(FunctionTypeEnum.Geography),
        Convert.ToInt32(EntityLevel.Undefined)
    ).ToList();

//Not able to convert to predefined model here 
IQueryable obj_Candidate_Geographies_Attributes_List = 
    (from c in DBEntity.Candidates.ToList() 
        join p in DBEntity.vw_Candidate_AttributesNew.ToList() 
            on c.CandidateId equals p.CandidateId 
        join q in obj_Candidate_Geographies_List 
            on c.CandidateId equals q.CandidateId 
    select new 
            { 
                CandidateId = c.CandidateId, 
                FirstName = q.FirstName, 
                LastName = q.LastName, 
                GeographyId = q.GeographyId, 
                GeographyName = q.GeographyName, 
                SkillId = p.SkillId, 
                SkillName = p.SkillName, 
                CreatedOn = c.CreatedOn, 
                ModifiedOn = c.ModifiedOn 
            }
        );

//Predefined Model
public class CandidateGeographiesAttributes 
{ 
    public int CandidateId { get; set; } 
    public string FirstName { get; set; } 
    public string LastName { get; set; } 
    public int GeographyId { get; set; } 
    public string GeographyName { get; set; } 
    public int SkillId { get; set; } 
    public string SkillName { get; set; } 
    public DateTime CreatedOn { get; set; } 
    public DateTime ModifiedOn { get; set; } 
}

---

任何人都可以帮助我如何将linq结果强制转换为预定义数据模型列表。

您应该创建

CanidateGeographicalCatributes

的实例，而不是让linq在此处为您创建匿名类型：

select new { CandidateId = c.CandidateId, FirstNam ...

改为：

select new CanidateGeographicAttributes() { CandidateId = c.CandidateId, FirstNam..

---

您需要创建新的CandidateGeographiesAttributes，而不是匿名类型。因此：

IQueryable<CandidateGeographiesAttributes> 
obj_Candidate_Geographies_Attributes_List = 
(from c in DBEntity.Candidates 

    join p in DBEntity.vw_Candidate_AttributesNew.ToList() on c.CandidateId
    equals  p.CandidateId 

    join q in obj_Candidate_Geographies_List on c.CandidateId 
    equals q.CandidateId 

    select new CandidateGeographiesAttributes
    { 
        CandidateId = c.CandidateId, 
        FirstName = q.FirstName, 
        LastName = q.LastName, 
        GeographyId = q.GeographyId, 
        GeographyName = q.GeographyName, 
        SkillId = p.SkillId, 
        SkillName = p.SkillName, 
        CreatedOn = c.CreatedOn, 
        ModifiedOn = c.ModifiedOn 
    }
).AsQueryable();

//Predefined Model 
public class CandidateGeographiesAttributes 
{ 
public int CandidateId { get; set; } 
public string FirstName { get; set; }
public string LastName { get; set; } 
public int GeographyId { get; set; } 
public string GeographyName { get; set; } 
public int SkillId { get; set; } 
public string SkillName { get; set; } 
public DateTime CreatedOn { get; set; } 
public DateTime ModifiedOn { get; set; } 
}

IQueryable
obj\u候选对象\u地理位置\u属性\u列表=
（来自DBEntity.候选人中的c）
在c.CandidateId上的DBEntity.vw_Candidate_AttributesNew.ToList（）中加入p
等于p.CandidateId
在c.CandidateId上的obj_候选人地理位置列表中加入q
等于q.CandidateId
选择新的候选地理信息属性
{ 
CandidateId=c.CandidateId，
FirstName=q.FirstName，
LastName=q.LastName，
GeographyId=q.GeographyId，
GeographyName=q.GeographyName，
SkillId=p.SkillId，
SkillName=p.SkillName，
CreatedOn=c.CreatedOn，
修饰词
}
).AsQueryable（）；
//预定义模型
公共类候选人地理奖
{ 
公共int候选ID{get；set；}
公共字符串名{get；set；}
公共字符串LastName{get；set；}
公共int GeographyId{get；set；}
公共字符串GeographyName{get；set；}
公共int SkillId{get；set；}
公共字符串SkillName{get；set；}
public DateTime CreatedOn{get；set；}
公共日期时间修饰符{get；set；}
}

请花一些时间格式化此文件。我尝试过此操作，但出现编译错误“无法隐式转换类型”System.Collections.Generic.IEnumerablechange IQueryable为IEnumerable，或者您应该能够在linq语句末尾添加.AsQueryable（），以保持IQueryable