I have a WCF single channel implementation on the Server side and Client side. I have a custom class on the Server side that i am trying to pass to the client side. I am trying to pass an array (collection) of custom class to the client side.
Following is an example of the code implementation i have.
ServerSide class structure:
'Module name ServerModule.dll
Public Class ServerChildClass
Public m_Integer As Integer
Public Property mInteger As Integer
Get
Return m_Integer
End Get
Set(value As Integer)
m_Integer = value
End Set
End Property
End Class
Public Class ServerChildClass2
Public m_Integer As Integer
Public Property mInteger As Integer
Get
Return m_Integer
End Get
Set(value As Integer)
m_Integer = value
End Set
End Property
End Class
Public Class ServerChildClass3
Public m_Integer As Integer
Public Property mInteger As Integer
Get
Return m_Integer
End Get
Set(value As Integer)
m_Integer = value
End Set
End Property
End Class
WCF DataContract:
Imports System.ServiceModel
Imports System.Runtime.Serialization
Imports ServerModule
<DataContract(Name:="Transaction")> <Serializable()>
<KnownType(GetType(List(Of Object)))>
<KnownType(GetType(Integer))>
<KnownType(GetType(ServerChildClass))>
<KnownType(GetType(ServerChildClass2))>
<KnownType(GetType(ServerChildClass3))>
Public Class Transaction
Implements ICloneable
Implements IExtensibleDataObject
Public Sub New()
End Sub
'Add <DataMember()> here
Public Function Clone() As Object Implements System.ICloneable.Clone 'client uses this to define query
Dim newObject As New IHermesEngineServiceDataContract
Return newObject
End Function
Public Property ExtensionData As ExtensionDataObject Implements IExtensibleDataObject.ExtensionData
<DataMember()>
Public Property Command As Integer
<DataMember()>
Public Property Client As Integer
'A list of Integer, or a list of ServerChildClass or ServerChildClass2 or ServerChildClass3. Basically a list of objects
<DataMember()>
Public Property Parameters As System.Object()
End Class
WCF contract and class definition:
'Service contract
<ServiceContract()> _
Public Interface IControlContract
<OperationContract()>
Function GetUpdates(ByVal RequestType As Integer, ByRef Info As Transaction()) As Boolean
End Interface
'Service contract class implementation
Public Class ControlClass
Implements IControlContract
Function GetUpdates(ByVal RequestType As Integer, ByRef Info As Transaction()) As Boolean Implements IControlContract.GetUpdates
Return MyBase.Channel.GetUpdates(RequestType, Info)
End Function
End Class
WCF Server Side Implementation:
Imports ServerModule
Public Class WCFClass
Implements IControlContract
Public Function GetUpdates(ByVal RequestType As Integer, ByRef Info As Transaction()) As Boolean Implements IControlContract.GetUpdates
ReDim Info(2)
'Array of ServerChildClass of length x
Dim ClassArray As ArrayList
'Array of ServerChildClass2 of length x
Dim Class2Array As ArrayList
If (RequestType = 1) Then
Info(0) = New Transaction
Info(0).Command = RequestType
Info(0).Client = RequestType
Info(0).Parameters = ClassArray.ToArray()
Info(1) = New Transaction
Info(1).Command = RequestType
Info(1).Client = RequestType
Info(1).Parameters = Class2Array.ToArray()
Info(2) = New Transaction
Info(2).Command = RequestType
Info(2).Client = RequestType
Info(2).Parameters = "Test String"
End
Return True
End Function
End Class
When i send the following structure from the Server side to the client side, i receive the following error. "An error occurred while receiving the HTTP response to http://localhost/xyz. This could be due to the service endpoint binding not using the HTTP protocol. This could also be due to an HTTP request context being aborted by the server (possibly due to the service shutting down). See server logs for more details."
Please let me know where the issue is happening. How do i successfully send an array of class references as a parameter to the client side? Any help would be appreciated.
