我正在嘗試將列表帶到frontEnd. 我正在使用 mongoDb。我mongodb有一個名為 的集合Employee。Employee具有以下屬性public class EmployeeViewModel{ [BsonId(IdGenerator = typeof(StringObjectIdGenerator))] public string ownerId { get; set; } public string atributeChange { get; set; } public PersonalDataViewModel personalData { get; set; } public AddressViewModel address { get; set; } public List<EmailsViewModel> emails { get; set; } public SyndicateViewModel syndicate { get; set; } public List<DependentsViewModel> dependents { get; set; } public List<PhoneViewModel> phone { get; set; } public List<BankViewModel> bank { get; set; } public AttributesViewModel attributes { get; set; } public List<BenefitsViewModel> benefits { get; set; } public TransportViewModel transport { get; set; } public List<AttachmentsViewModel> attachments { get; set; } public List<DocumentsViewModel> documents { get; set; } public List<DocumentsImagesViewModel> DependentsDocuments { get; set; } public List<AttachmentsViewModel> DependentsAttachments { get; set; } public List<BenefitsViewModel> DependentsBenefits { get; set; }}在此Model，我有一個名為：的屬性public List <DocumentsImagesViewModel> DependentsDocuments {get; set; }：public class DocumentsViewModel{ [BsonId] public string ownerId { get; set; } public string id { get; set; } public string dependentId { get; set; } public string number { get; set; } public DateTime expiration { get; set; } public List<DocumentsImagesViewModel> images { get; set; } public List<DocumentPropertiesViewModel> properties { get; set; } public DocumentTypeViewModel type { get; set; }}我正在嘗試帶來包含 depedentID 參數(shù)相等的好處。當我使用這個方法時，它有一個無法轉換的錯誤。IEnumerable 列出 C#
2 回答
jeck貓
TA貢獻1909條經(jīng)驗 獲得超7個贊
LINQ 的.Where回報IEnumerable<T>，你的模型需要一個List<T>，你可以改變你的模型，IEnumerable<T>或者你可以改變這行代碼：
DependentsDocuments = employee.DependentsDocuments .Where(x => x.dependentId == dependentId)
對此：
DependentsDocuments = employee.DependentsDocuments .Where(x => x.dependentId == dependentId) .ToList()
幕布斯6054654
TA貢獻1876條經(jīng)驗 獲得超7個贊
將您的代碼更改為此代碼可能有效：
public async Task<List<Documents>> GetDocument(string ownerId, string dependentId)
{
var query = (from employee in _employee.AsQueryable()
where employee.ownerId == ownerId
select new Employee()
{
DependentsDocuments = employee.DependentsDocuments.Where(x => x.dependentId == dependentId).ToList()
}).ToList();
return query.ToList();
}
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