我在服务器端和客户端有一个WCF单通道实现。我在服务器端有一个自定义类,我试图传递给客户端。我试图将自定义类的数组(集合)传递给客户端。
以下是我拥有的代码实现示例。
ServerSide类结构:
'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合同和类定义:
'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服务器端实施:
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
当我从服务器端向客户端发送以下结构时,我收到以下错误。 “收到对http://localhost/xyz的HTTP响应时发生错误。这可能是由于服务端点绑定不使用HTTP协议。这也可能是由于服务器中止了HTTP请求上下文(可能是由于服务关闭)。有关详细信息,请参阅服务器日志。“
请让我知道问题出在哪里。如何成功将类引用数组作为参数发送到客户端?任何帮助将不胜感激。
答案 0 :(得分:0)
在Visual Studio中,在客户端项目Connected Services上,右键单击WCF名称,选择“配置参考服务”,在“集合类型”上选择“ System.Collections.Generic.List”,单击“确定”。再次测试。