I have an issue that is driving me nuts. I have a project to deserialize and process a json response:
[{"summary":[{"cardDate":"2013-08-06","cardId":46121,"contenderList":[1,2,3,4,5,7,8,10],"dateTime":"2013-08-06 10:36","marketList":["TOTE_WIN_PLACE","FORECAST","FORECAST_PLACE"],"raceId":465453,"raceNumber":2,"tote":"Australia","venue":"AU - Dog, Bendigo"}]
I have built classes to handle the response:
Public Class clsAXMeetList
Public Property summary() As clsAXRaceList()
End Class
Public Class clsAXRaceList
Public Property cardDate As String
Public Property cardID As Integer
Public Property [contenderList]() As clsAXContenderList()
Public Property dateTime As String
Public Property [marketList]() As clsAXMarketList()
Public Property raceID As String
Public Property raceNumber As Integer
Public Property tote As String
Public Property venue As String
End Class
Public Class clsAXContenderList
Public Property runners() As Integer
End Class
Public Class clsAXMarketList
Public Property [a] As String
Public Property [b] As String
Public Property [c] As String
End Class
but when the deserializer hits the first value in the contender list (1) it throws this error:
Error converting value 1 to type 'AsiaExchange.clsAXContenderList'. Path '[0].summary[0].contenderList[0]', line 1, position 71.
I have looked around and I cant find much help
The contenderList is an array of numbers, not objects. There is no conversion from numbers to arbitrary objects. You need to either change your contenderList property to an array of integers (Integer()) or provide a converter to your object. You will have to do the same for the marketList as well.
Related
I have been tasked with adding a REST server to our company to work with an outside vendor. I have been able to complete most of it using VB.Net. However I am not sure how to handle the example below where there are 3 descriptors (OrderNumber,Desination,ItemNumbers) and ItemNumbers is an array. There may be any number of ItemNumbers in a single post. For the others I have made a class with properties, how can I do this with an array? I am using Newtonsoft.Json. Please post an example and Thank You!
Public Class Quality 'Example of how I have done the other json Posts
Private OrderNumberValue As String
Public Property OrderNumber() As String
Get
Return OrderNumberValue
End Get
Set(ByVal value As String)
OrderNumberValue = value
End Set
End Property
Private DestinationValue As String
Public Property Destination() As String
Get
Return DestinationValue
End Get
Set(ByVal value As String)
DestinationValue = value
End Set
End Property
END CLASS
This is the example json being posted:
{
"OrderNumber": "SO-1234567890",
"Destination": "Dock1 / Floor / whatever",
"ItemNumbers": [
{
"ItemNumber": "400100",
"CasesRequired": "140"
},
{
"ItemNumber": "400200",
"CasesRequired": "140"
}
]
}
you can use Newtonsoft.Json
Imports Newtonsoft.Json
Dim order As Order = Newtonsoft.Json.JsonConvert.DeserializeObject(Of Order)(json)
and you need two classes
Public Class ItemNumber
Public Property ItemNumber As String
Public Property CasesRequired As String
End Class
Public Class Order
Public Property OrderNumber As String
Public Property Destination As String
Public Property ItemNumbers As ItemNumber()
End Class
I've an old programm with edmx. Inside this one, I've linked a class (Table) To a View (Table/filter on a value of a column)
I want migrate this project to code first.
I copy/paste the project delete edmx file and generate models from an existing database.
All is good except this link.
<Table("JoinAffectation")>
partial public Class JointAffectation
public property Id as Long
public IdRecherche as Integer 'the link with my view
<NotMapped>
<ForeignKey("Id")>
PUBLIC OVERRIDABLE PROperty RechercheJoint as ViewRechercheJoint
But When I try to use function of automatical sort/filter using expression
I've error : The specified type member 'RechercheJoint' is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported.
If I removed I error saying I don't same comumn and property... Also , How Can I stipulate RechercheJoint is mapped on IdRecherche
thanks for your help
Finally Using modelbuilder, I can join my view and my table like in edmx
<Table("JointAffectation")>
Partial Public Class JointAffectation
Public Property Id As Long
Public Property IdTypeJoint As Long
Public Property IdRecherche As Integer
Public Overridable Property JointType As JointType
<ForeignKey("Id")>
Public Overridable Property RechercheJoint As ViewRechercheJoint
End Class
<Table("ViewRechercheJoint")>
Partial Public Class ViewRechercheJoint
<Key>
<DatabaseGenerated(DatabaseGeneratedOption.None)>
Public Property Id As Integer
<StringLength(50)>
Public Property Libelle As String
<ForeignKey("IdRecherche")>
Public Overridable Property JointAffectations As ICollection(Of JointAffectation)
End Class
modelBuilder.Entity(Of JointAffectation)() _
.HasRequired(Function(e) e.RechercheJoint) _
.WithMany(Function(e) e.JointAffectations) _
.HasForeignKey(Function(e) e.IdRecherche)
I am new to entity framework, and wondered if someone could help. I have 2 classes that define documents and then their versions (1 to many relationship).
I am using the asp:repeater to display the list of documents, but cannot access information re the versions.
The 2 classes are below
Public Class Document
<Key>
Public Property ID As Guid
Public Property Name As String
Public Property Description As String
Public Property CreationDate As Date
Public Property ReviewDate As Date
Public Property NextReview As Date
Public Overridable Property Versions As ICollection(Of DocumentVersion)
End Class
Public Class DocumentVersion
<Key>
Public Property VersionID As Guid
<ForeignKey("Document")>
Public Property DocumentID As Guid
Public Property FilePath As String
Public Property CreationDate As Date
Public Overridable Property Document As Document
End Class
In the asp:repeater I'm using <%#: Item.Name %> to display the document name, but cannot access <%#: Item.Versions.FilePath %> for example.
If I do include item.versions.filepath I get the error:
BC30456: 'FilePath' is not a member of 'ICollection(Of DocumentVersion)'.
Any help would be very appreciated.
I'm toying around with a 3rd party library and something has me absolutely puzzled.
When I instantiate this class, immediately all of the properties of the class throw exceptions before any more code even runs. Why is this happening? It's not just this TypedSegmentPWK class, it's all of the typedsegment classes.. of which there are many.
Simple instantiation fails
Imports OopFactory.X12.Parsing
Imports OopFactory.X12.Parsing.Model
Imports OopFactory.X12.Parsing.Model.Typed
....
Dim test As New TypedSegmentPWK
test.PWK04_EntityIdentifierCode = "blah"
Assigning a value to PWK04_EntityIdentifierCode or any other property of test fails with a null reference exception.
TypedSegmentPWK:
Namespace OopFactory.X12.Parsing.Model.Typed
Public Class TypedSegmentPWK
Inherits TypedSegment
Public Sub New()
Public Property PWK01_ReportTypeCode As String
Public Property PWK02_ReportTransmissionCode As String
Public Property PWK03_ReportCopiesNeeded As Integer?
Public Property PWK04_EntityIdentiferCodeEnum As EntityIdentifierCode
Public Property PWK04_EntityIdentifierCode As String
Public Property PWK05_IdentificationCodeQualifier As String
Public Property PWK05_IdentificationCodeQualifierEnum As IdentificationCodeQualifier
Public Property PWK06_IdentificationCode As String
Public Property PWK07_Description As String
Public Property PWK08_ActionsIndicated As String
Public Property PWK09_RequestCategoryCode As String
End Class
End Namespace
TypedSegment:
Namespace OopFactory.X12.Parsing.Model
Public MustInherit Class TypedSegment
Protected Sub New(segmentId As String)
Public Event Initialized As EventHandler
Public Event Initializing As EventHandler
Protected Overridable Sub OnInitialized(e As EventArgs)
Protected Overridable Sub OnInitializing(e As EventArgs)
End Class
End Namespace
Full source here: https://github.com/KeyMarkInc/OopFactory.X12
All the properties reference _segment defined in TypedSegment, e.g.
public string PWK04_EntityIdentifierCode
{
get { return _segment.GetElement(4); }
set { _segment.SetElement(4, value); }
}
However, the _segment variable is not initialized until TypedSegment.Initialize(Container parent, X12DelimiterSet delimiters) is called...
internal void Initialize(Container parent, X12DelimiterSet delimiters)
{
OnInitializing(new EventArgs());
_segment = new Segment(parent, delimiters, _segmentId);
OnInitialized(new EventArgs());
}
This is an internal method, so presumably something in this framework is supposed to call it, and not you as the user. So, I would guess the answer is that you are using the TypedSegmentPWK class incorrectly, although I don't know what the correct way is.
Is there a way to write an Audit log automatically?
I have created a DbSet(Of Protocols)
Here is my protocol class:
Public Class Protocol
Inherits ModelBase
Implements ILogicalTimestamp
<Key>
Public Property ProtocolId As Integer
<Required>
Public Property ProtocolText As String
Public Property CreatedByUserId As Integer?
<Required>
Public Property CreatedByUser As User
<Required>
<DefaultValue(0)>
Public Property Type As ProtocolType
Public Property LinkedToUserId As Integer?
Public Property LinkedToUser As User
Public Property LinkedToBusinessPartnerId As Integer?
Public Property LinkedToBusinessPartner As BusinessPartner
Public Property LinkedToClientId As Integer?
Public Property LinkedToClient As Client
Public Property LinkedToSettingId As Integer?
Public Property LinkedToSetting As Setting
Public Property LastUpdateTimestamp As Date? Implements ILogicalTimestamp.LastUpdateTimestamp
Public Property CreationTimestamp As Date? Implements ILogicalTimestamp.CreationTimestamp
Public Enum ProtocolType
AutoChanges = 0
Explicitly = 1
End Enum
End Class
How can i write changes in protocol?
And how can i get the current UserId into the SaveChanges method to fill CreatedByUserId property in my protocol class?
Maybe anyone has an idea to do that automatically.
You can create a custom DB Context inheriting from DbContext, and then override the SaveChanges() method, so you can manipulate the data before/after modification.
Or you can use a library like Audit.EntityFramework, or check its code (C# sorry).
Also the library EntityFramework-Plus can probably help.