我正在创建一个巨大的网格，该网格显示数据库中4个表中的所有不同记录类型。我创建了一个视图模型来保存每种记录类型的每个字段，然后进行查询以获取每个记录类型，并为每个记录创建一个viewmodel对象。现在，我想将所有这些组合成一个很大的结果，然后返回到“视图”，以便可以在网格中显示所有内容。这是我获取所有日志类型的功能：
public ActionResult GetAllLogs([DataSourceRequest]DataSourceRequest request)
{
//var result;
var allAssetConfigLogs = DbContext.AssetConfigurations.Select(log => new Models.AllLogsViewModel()
{
ID = log.Asset_SK.Value,
AssetConfigurationID = log.AssetConfiguration_SK,
AssetID = log.Asset_SK.Value,
AssetName = log.Asset.Name,
RedConID = log.ReadinessCondition_SK,
RedCon = log.ReadinessCondition.Name,
EKVType = log.EKV_Type_SK,
IsSSF = log.IsSSF,
IsArmedPlug = log.IsArmedPlug,
IsConnectedCommunications = log.IsConnectedCommunications,
IsFutureCapable = log.IsFutureCapable,
IsFutureCapableLongTerm = log.IsFutureCapableLongTerm,
IsActive = log.IsActive,
IsExternal = log.IsExternal,
IsIsolationComponent = log.IsIsolationComponent,
IsIsolationSerial = log.IsIsolationSerial,
IsInMaintenanceMode = log.IsInMaintenanceMode,
IsEWCS = log.IsEWCS,
IsMBIT = log.IsMBIT,
IsIcoBsc = log.IsIcoBsc,
IsLocal = log.IsLocal,
IsStop = log.IsStop,
IsSurge = log.IsSurge,
ACNotes = log.Notes,
SoftwareVersion = log.SoftwareVersion,
IsIsolationSwitchPort = log.IsIsolationSwitchPort,
IsPortManagedDown = log.IsPortManagedDown,
IsOsfLogical = log.IsOsfLogical,
ShipName = log.ShipName,
JUNumber = log.JU_Number,
GMACKey = log.GMAC_Key,
URN = log.URN,
TimeStamp = log.TimeStamp,
});
var allMissionLogs = DbContext.MissionConfigurations.Select(log => new Models.AllLogsViewModel()
{
MissionConfiguration_SK = log.MissionConfiguration_SK,
Asset_SK = log.Asset_SK,
EventType_SK = log.EventType_SK,
Environment_SK = log.Environment_SK,
RedConID = log.ReadinessCondition_SK,
RecallTime = log.RecallTime,
Notes = log.Notes
});
var allPACLogs = DbContext.PAC_Logs.Select(log => new Models.AllLogsViewModel()
{
UserRole = String.Join(",", log.User.Roles),
PacLogID = log.PAC_Log_SK,
SiteID = log.Site_SK,
PacLogStatusID = log.PAC_LogStatus_SK,
Status = log.PAC_LogStatus.Description,
StatusDate = log.StatusDate,
ActivityDescription = log.ActivityDescription,
ActivityDetailDescription = log.ActivityDetailDescription,
TrackingNumber = log.TrackingNumber,
QuickTrack = log.QuickTrack,
WAM_Number = log.WAM_Number,
WAM_Revision = log.WAM_Revision,
RequestedBy = log.RequestedBy,
RequestedByName = log.User1 != null ? log.User1.FirstName + " " + log.User1.LastName : "",
Controller = log.Controller,
ControllerName = log.User2 != null ? log.User2.FirstName + " " + log.User2.LastName : "",
AuthorizationNumber = log.AuthorizationNumber,
IsSafe = log.IsSafe,
SafeComments = log.SafeComments,
PlanStartZulu = log.PlanStartZulu,
PlanFinishZulu = log.PlanFinishZulu,
ActualStartZulu = log.ActualStartZulu,
ActualFinishZulu = log.ActualFinishZulu,
PlanStartLocal = log.PlanStartLocal,
PlanFinishLocal = log.PlanFinishLocal,
ActualStartLocal = log.ActualStartLocal,
ActualFinishLocal = log.ActualFinishLocal,
IsGovDirected = log.IsGovernmentDirected,
POC = log.POC,
POCPhone = log.POC_Phone,
WorkOrder = log.WorkOrder,
ApprovalAuthority = log.ApprovalAuthority,
AuthorityDocument = log.AuthorityDocument,
FinalVerification = log.FinalVerification,
WindowActivity = log.WindowActivities,
APAC = log.APAC,
WAMStartZulu = log.WAMStartZulu,
WAMFinishZulu = log.WAMFinishZulu,
AssetAvailable = log.AssetAvailable,
AssetUnavailable = log.AssetUnavailable,
AssetStatus = log.MaintenanceStatus_SK,
AssetStatusString = log.MaintenanceStatu.Name,
ID_MaintenanceActivity = log.MaintenanceActivity_SK,
ID_MaintenanceActivityString = log.MaintenanceActivity.Name,
FourtyMinuteNotification = log.C40MinNotification,
Comments = log.Comments,
QAComments = log.QA_Comments,
QACheck = log.QA_Check,
Unscheduled = log.Unscheduled,
SiteName = log.Site.FullName,
Environment1 = log.Environment1,
Environment2 = log.Environment2,
Environment3 = log.Environment3,
TimeZoneID = log.TimeZone_SK,
TimeZone = log.TimeZone.Name,
TimeZoneOffset = log.TimeZone_SK != null ? log.TimeZone.Offset.Value : 0,
AssetCheck = log.AssetLogPAC_Logs.Count > 0 ? "yes" : "",
EnvironmentCheck = log.Environment1 || log.Environment2 || log.Environment3 ? "yes" : ""
});
var allPRs = DbContext.ProblemReports.Select(log => new Models.AllLogsViewModel()
{
ProblemReportID = log.ProblemReport_SK,
ProblemReportOwnerID = log.ProblemReportOwner_SK,
EventID = log.Event_SK,
EventString = log.Event.Name,
SubAssembly = log.Subassembly_SK,
SubAssemblyString = log.Subassembly.Name,
ActualFailureTime = log.ActualFailureTime,
ActualRestoreTime = log.ActualRestoreTime,
CurrentDateTimeGroup = log.CurrentDateTimeGroup,
FaultEventDescription = log.FaultEventDescription,
FaultEventDetails = log.FaultEventDetails,
CurrentDayActivities = log.CurrentDayActivities,
PathForward = log.PathForward,
EstimatedArrivalDate = log.EstimatedArrivalDate,
WorkOrderNumber = log.WorkOrderNumber,
NCR_Number = log.NCR_Number,
MalfunctionNotes = log.MalfunctionNotes,
RepairStatus = log.RepairStatus,
NextUpdateDue = log.NextUpdateDue,
OriginatedBy = log.OriginatedBy,
OriginatedByString = log.User.FirstName + " " + log.User.LastName,
ReleasedBy = log.ReleasedBy,
ReleasedByString = log.ReleasedBy != null ? log.User1.FirstName + " " + log.User1.LastName : "",
ClosedBy = log.ClosedBy,
ClosedByString = log.ClosedBy != null ? log.User2.FirstName + " " + log.User2.LastName : "",
IsClosed = log.IsClosed,
IsNotesVisible = log.IsNotesVisible,
TimeStamp = log.TimeStamp,
RedConID = log.ReadinessCondition_SK,
RedCon = log.ReadinessCondition.Name,
AssetType = log.Asset.AssetType.Name,
AssetSite = log.Asset.Site.Name,
Rev = log.ProblemReportDetails.OrderByDescending(x => x.CreatedBy).FirstOrDefault().Revision.Name,
ETRO = log.ProblemReportDetails.OrderByDescending(x => x.CreatedBy).FirstOrDefault().ETRO.ToString(),
ETROChangeReason = log.ProblemReportDetails.OrderByDescending(x => x.CreatedBy).FirstOrDefault().ETRO_ChangeReasons.Name,
NoteArchive = log.NotesArchive,
currentDetail = log.ProblemReportDetails.OrderByDescending(y => y.CreatedOn).FirstOrDefault(),
RelatedAssetEnv = DbContext.MissionConfigurations.Where(y => y.Asset_SK == log.Asset.Asset_SK).OrderByDescending(y => y.TimeStamp).Select(y => y.Environment.EnvironmentLogs.OrderByDescending(z => z.TimeStamp).FirstOrDefault().Designation).FirstOrDefault()
});
//return Json(result.ToDataSourceResult(request), JsonRequestBehavior.AllowGet);
}
我的巨型ViewModel（将来自不同日志类型的不同字段组合成一个大模型：
`//This is a model of all log types (relating to assets) consolidated into one.
public class AllLogsViewModel
{
//This region holds fields that are shared amongst multiple log types.
#region SharedFields
public int ID { get; set; }
public string RedCon { get; set; }
public int RedConID { get; set; }
public DateTime TimeStamp { get; set; }
public string TimeStampString
{
get { return TimeStamp.ToString(); }
}
public string TimeStampStringZulu
{
get { return TimeStamp.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public string CreatedBy { get; set; }
public DateTime CreatedOn { get; set; }
public string CreatedOnString
{
get { return CreatedOn.ToString(); }
}
public string CreatedOnStringZulu
{
get { return CreatedOn.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public string UpdatedBy { get; set; }
public DateTime UpdatedOn { get; set; }
public string UpdatedOnString
{
get { return UpdatedOn.ToString(); }
}
public string UpdatedOnStringZulu
{
get { return UpdatedOn.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
#endregion
#region AssetConfigLogs
public int AssetConfigurationID { get; set; }
public int AssetID { get; set; }
public string AssetName { get; set; }
public int EKVType { get; set; }
//Labeled as "OSF Physical" for some reason?
public bool IsSSF { get; set; }
public bool IsArmedPlug { get; set; }
public bool IsArmedSDS { get; set; }
public bool IsConnectedCommunications { get; set; }
public bool IsFutureCapable { get; set; }
public bool IsFutureCapableLongTerm { get; set; }
public bool IsActive { get; set; }
public bool IsExternal { get; set; }
public bool IsIsolationComponent { get; set; }
public bool IsIsolationSerial { get; set; }
public bool IsInMaintenanceMode { get; set; }
public bool IsEWCS { get; set; }
public bool IsMBIT { get; set; }
public bool IsIcoBsc { get; set; }
public bool IsLocal { get; set; }
public bool IsStop { get; set; }
public bool IsSurge { get; set; }
public string ACNotes { get; set; }
public string SoftwareVersion { get; set; }
public bool IsIsolationSwitchPort { get; set; }
public bool IsPortManagedDown { get; set; }
public bool IsOsfLogical { get; set; }
public string ShipName { get; set; }
public string JUNumber { get; set; }
public string GMACKey { get; set; }
public string URN { get; set; }
//form logic controls?
public bool GMMVisibility { get; set; }
public bool CNEVisibility { get; set; }
public bool SiloVisibility { get; set; }
public bool IDTVisibility { get; set; }
public bool AEGISVisibility { get; set; }
public bool GMACVisibility { get; set; }
public bool URNVisibility { get; set; }
public bool ANTPY2Visibility { get; set; }
public bool GBIVisibility { get; set; }
public bool OSFVisibility { get; set; }
public bool PortIsolationVisibility { get; set; }
public int AssignedGBIID { get; set; }
public string AssignedGBIName { get; set; }
public int AssignedCNEID { get; set; }
public string AssignedCNEName { get; set; }
#endregion
#region MissionLogs
public int MissionConfiguration_SK { get; set; }
public int Asset_SK { get; set; }
public int EventType_SK { get; set; }
public int Environment_SK { get; set; }
public string Designation
{
get
{
var designation = string.Empty;
switch (EventType_SK)
{
case 5: designation = "COMM";
break;
case 8: designation = "OPS";
break;
case 10: designation = "TEST";
break;
}
return designation;
}
} //For EventType_SK
public int RecallTime { get; set; }
public string Notes { get; set; }
#endregion
#region PacLogs
public string UserRole { get; set; }
public string SubmitType { get; set; }
public int PacLogID { get; set; }
public int SiteID { get; set; }
public int? PacLogStatusID { get; set; }
public string Status { get; set; }
public DateTime StatusDate { get; set; }
public string StatusDateString
{
get { return StatusDate.ToString(); }
}
[DisplayName("Status Date")]
public string StatusDateStringZulu
{
get { return StatusDate.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public string ActivityDescription { get; set; }
public string ActivityDetailDescription { get; set; }
public string TrackingNumber { get; set; }
public string QuickTrack { get; set; }
public string WAM_Number { get; set; }
public string WAM_Revision { get; set; }
public int? RequestedBy { get; set; }
public string RequestedByName { get; set; }
public int? Controller { get; set; }
public string ControllerName { get; set; }
public string AuthorizationNumber { get; set; }
public bool IsSafe { get; set; }
public string SafeComments { get; set; }
public DateTime? PlanStartZulu { get; set; }
[DisplayName("Planned Start")]
public string PlanStartZuluString
{
get { return PlanStartZulu?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
[Required(ErrorMessage = "Planned Close is Required")]
// changed to "Planned Close"
public DateTime? PlanFinishZulu { get; set; }
[DisplayName("Planned Close")]
public string PlanFinishZuluString
{
get { return PlanFinishZulu?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public DateTime? ActualStartZulu { get; set; }
[DisplayName("Actual Start")]
public string ActualStartZuluString
{
get { return ActualStartZulu?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public DateTime? ActualFinishZulu { get; set; }
[DisplayName("Actual Close")]
public string ActualFinishZuluString
{
get { return ActualFinishZulu?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public DateTime? PlanStartLocal { get; set; }
[DisplayName("Planned Start(Local)")]
public string PlanStartLocalString
{
get { return PlanStartLocal?.ToString(); }
}
public DateTime? PlanFinishLocal { get; set; }
[DisplayName("Planned Close(Local)")]
public string PlanFinishLocalString
{
get { return PlanFinishLocal?.ToString(); }
}
public DateTime? ActualStartLocal { get; set; }
[DisplayName("Actual Start(Local)")]
public string ActualStartLocalString
{
get { return ActualStartLocal?.ToString(); }
}
public DateTime? ActualFinishLocal { get; set; }
[DisplayName("Actual Close(Local)")]
public string ActualFinishLocalString
{
get { return ActualFinishLocal?.ToString(); }
}
public bool IsGovDirected { get; set; }
public string POC { get; set; }
public string POCPhone { get; set; }
public string WorkOrder { get; set; }
public string ApprovalAuthority { get; set; }
public string AuthorityDocument { get; set; }
public int? FinalVerification { get; set; }
public string FinalVerificationString { get; set; }
public bool WindowActivity { get; set; }
public bool APAC { get; set; }
public DateTime? WAMStartZulu { get; set; }
[DisplayName("WAM Start")]
public string WAMStartZuluString
{
get { return WAMStartZulu?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public DateTime? WAMFinishZulu { get; set; }
[DisplayName("WAM Finish")]
public string WAMFinishZuluString
{
get { return WAMFinishZulu?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public DateTime? AssetAvailable { get; set; }
public string AssetAvailableString
{
get { return AssetAvailable?.ToString(); }
}
[DisplayName("Asset Available")]
public string AssetAvailableStringZulu
{
get { return AssetAvailable?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public DateTime? AssetUnavailable { get; set; }
public string AssetUnavailableString
{
get { return AssetUnavailable?.ToString(); }
}
[DisplayName("Asset Unavailable")]
public string AssetUnavailableStringZulu
{
get { return AssetUnavailable?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public int? AssetStatus { get; set; }
public string AssetStatusString { get; set; }
// renamed to Activity Category
public int? ID_MaintenanceActivity { get; set; }
// renamed to Activity Category
public string ID_MaintenanceActivityString { get; set; }
public string FourtyMinuteNotification { get; set; }
public string Comments { get; set; }
public string QAComments { get; set; }
public bool QACheck { get; set; }
public bool Unscheduled { get; set; }
public string TemplateName { get; set; }
public string SiteName { get; set; }
public bool Environment1 { get; set; }
public bool Environment2 { get; set; }
public bool Environment3 { get; set; }
public string Environments
{
get
{
var envs = "";
if (Environment1)
{
envs += "1";
if (Environment2 || Environment3)
{
envs += ", ";
}
}
if (Environment2)
{
envs += "2";
if (Environment3)
{
envs += ", ";
}
}
if (Environment3)
{
envs += "3";
}
return envs;
}
}
public int? TimeZoneID { get; set; }
public string TimeZone { get; set; }
public int TimeZoneOffset { get; set; }
public string AssetCheck { get; set; }
public string EnvironmentCheck { get; set; }
#endregion
#region ProblemReports
public int ProblemReportID { get; set; }
public string ProblemReportIDString { get; set; }
public int? ProblemReportOwnerID { get; set; }
public int EventID { get; set; }
public string EventString { get; set; }
public int? SubAssembly { get; set; }
public string SubAssemblyString { get; set; }
public DateTime? ActualFailureTime { get; set; }
public string ActualFailureTimeString
{
get { return ActualFailureTime?.ToString(); }
}
[DisplayName("Actual Failure Time")]
public string ActualFailureTimeStringZulu
{
get { return ActualFailureTime?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public DateTime? ActualRestoreTime { get; set; }
public string ActualRestoreTimeString
{
get { return ActualRestoreTime?.ToString(); }
}
[DisplayName("Actual Restore Time")]
public string ActualRestoreTimeStringZulu
{
get { return ActualRestoreTime?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public DateTime? CurrentDateTimeGroup { get; set; }
public string CurrentDateTimeGroupString
{
get { return CurrentDateTimeGroup?.ToString(); }
}
[DisplayName("Current DateTime Group")]
public string CurrentDateTimeGroupStringZulu
{
get { return CurrentDateTimeGroup?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public string FaultEventDescription { get; set; }
public string FaultEventDetails { get; set; }
public string CurrentDayActivities { get; set; }
public string PathForward { get; set; }
public string PartNumber { get; set; }
public DateTime? EstimatedArrivalDate { get; set; }
public string EstimatedArrivalDateString
{
get { return EstimatedArrivalDate?.ToString(); }
}
[DisplayName("Estimated Arrival Date")]
public string EstimatedArrivalDateStringZulu
{
get { return EstimatedArrivalDate?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public string WorkOrderNumber { get; set; }
public string NCR_Number { get; set; }
public string MalfunctionNotes { get; set; }
public string RepairStatus { get; set; }
public DateTime? NextUpdateDue { get; set; }
public string NextUpdateDueString
{
get { return NextUpdateDue?.ToString(); }
}
[DisplayName("Next Update Due")]
public string NextUpdateDueStringZulu
{
get { return NextUpdateDue?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public int OriginatedBy { get; set; }
public string OriginatedByString { get; set; }
public int? ReleasedBy { get; set; }
public string ReleasedByString { get; set; }
public int? ClosedBy { get; set; }
public string ClosedByString { get; set; }
public bool IsClosed { get; set; }
public bool IsNotesVisible { get; set; }
public string TimeStampZuluString
{
get { return TimeStamp.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
[DisplayName("TimeStamp")]
public string TimeStampZuluStringZulu
{
get { return TimeStamp.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public string AssetType { get; set; }
public string AssetSite { get; set; }
public string Rev { get; set; }
public string ETRO { get; set; }
[DisplayName("ETRO")]
public string ETROzulu
{
get
{
if (DateTime.TryParse(ETRO, out DateTime temp))
{
return DateTime.Parse(ETRO).ToString("MM'/'dd'/'yyyy' 'HHmm'z'");
}
else
{
return ETRO;
}
}
}
public string ETROChangeReason { get; set; }
public string NoteArchive { get; set; }
public DAL.ProblemReportDetail currentDetail { get; set; }
public Models.ProblemReportDetails currentDetailModel { get; set; }
[DisplayName("Owner")]
public string ProblemReportOwnerString { get; set; }
public List<Models.ProblemReportDetails> RelatedPRDetails { get; set; }
public string RelatedAssetEnv { get; set; }
#endregion
#region ProblemReportDetails
public int ProblemReportDetailID { get; set; }
public int RevisionID { get; set; }
public bool HasParent { get; set; }
public DateTime? EventDate { get; set; }
public string EventDateString
{
get { return EventDate?.ToString(); }
}
public string EventDateStringZulu
{
get { return EventDate?.ToString("MM'/'dd'/'yyyy' 'HHmm'z'"); }
}
public int ProblemReportTypeID { get; set; }
public string ProblemReportType { get; set; }
public int? MaintenancePriorityID { get; set; }
public string MaintenancePriority { get; set; }
public int MaintenanceStatusID { get; set; }
public string MaintenanceStatus { get; set; }
public int? ParentMaintenanceStatus { get; set; }
public string ParentMaintenanceStatusString { get; set; }
public int DetailRedConID { get; set; }
public string DetailRedConString { get; set; }
public string ETRO_String { get; set; }
public int? ETROChangeReasonID { get; set; }
public string ETROChangeReasonString { get; set; }
#endregion
}
}`
我正在寻找实现此目的的最佳方法...是否可以使用Union组合它们并返回它们？我知道我可以将它们全部转换为带有ToList()的列表，然后以这种方式将它们组合起来。我当然在寻找速度，因为这将需要大量数据。我认为ToList()解决方案会使速度变慢。
但是如果数据不相关并且您只想合并这些集合，则应该可以对它们进行.Concat（）。
@@ David是正确的，因为Concat可能是最简单的方法。您可以在进行转换后添加类似这样的内容
var allLogs = allAssetConfigLogs
.Concat(allMissionLogs)
.Concat(allPACLogs)
.Concat(allPRs);
这假设您希望每个日志都没有特定的顺序。如果要使用不同的日志，可以使用Union（），但需要提供一些与之比较的日志。
作为旁注，我确实会建议像AutoMapper这样的东西来处理您的数据库实体到视图模型的转换。