.Net 4.0 WCF Service failing when passing parameters

3
votes

I am trying to test a WCF service using the basichttpbinding endpoint from the WCF test client. I can test methods that I don't pass parameters to with no issue, but when I need to pass a parameter I get the following error:

Failed to invoke the service. Possible causes: The service is offline or inaccessible; the client-side configuration does not match the proxy; the existing proxy is invalid. Refer to the stack trace for more detail. You can try to recover by starting a new proxy, restoring to default configuration, or refreshing the service.

An error occurred while executing the command definition. See the inner exception for details.

Server stack trace: at System.ServiceModel.Channels.ServiceChannel.ThrowIfFaultUnderstood(Message reply, MessageFault fault, String action, MessageVersion version, FaultConverter faultConverter) at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs) at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation) at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) at IErouter.GetClientSearch(String surname, String forename, String street, String postcode) at ErouterClient.GetClientSearch(String surname, String forename, String street, String postcode)

Due to the fact I can make calls to parameterless methods this error makes no sense to me.

[ServiceContract]
public interface IErouter
{
    #region Client Search

    [OperationContract]
    SelectClientSearch_Result[] GetClientSearch(
        string surname, string forename, string street, string postcode);

    #endregion

    #region Changes

    [OperationContract]
    ChangeForBlackBerry[] GetClientChanges(string blackberryPin);

    [OperationContract]
    bool AcceptChange(int changeId, string blackberryPin);

    [OperationContract]
    bool AcknowledgeChange(int changeId, string blackberryPin);

    [OperationContract]
    ChangeForBlackBerry[] GetManagerChangesForShiftType(string blackberryPin, 
        string date, int shiftTypeId);

    [OperationContract]
    ClientDetailChangeViewModel GetClientDetailChange(int changeId);

    #endregion

    #region Client Details

    [OperationContract]
    ClientDetailViewModel GetClientDetails(int clientId);

    [OperationContract]
    SelectUserLevel_Result GetUserLevel(string blackberryPin);

    #endregion

    #region Useful Contacts

    [OperationContract]
    SelectAdminCentreTelNo_Result[] GetAdminCentreTelNos();

    [OperationContract]
    string GetDutyEmail();

    [OperationContract]
    SelectDutyManager_Result[] GetDutyManagerTelNos();

    [OperationContract]
    string GetGhaHandyTelNo();

    [OperationContract]
    SelectHospitalNos_Result[] GetHospitalTelNos();

    [OperationContract]
    string GetICTTelNo();

    [OperationContract]
    string GetMAHMobileTelNo();

    [OperationContract]
    SelectMyManagerNo_Result[] GetMyManagerTelNo(string blackberryPin);

    [OperationContract]
    string GetNHSDirectTelNo();

    [OperationContract]
    string GetOOHEmail();

    [OperationContract]
    string GetOOHTelNo();

    [OperationContract]
    string GetOperationsEmail();

    [OperationContract]
    string GetOperationsTelNo();

    [OperationContract]
    string GetOtherHandyPersonTelNo();

    [OperationContract]
    SelectSWTelNos_Result[] GetSWTelNo();

    #endregion

    #region Gaurdian 24 Visit Monitoring

    [OperationContract]
    string StartVisitMonitoring(int clientId, int activityDuration, 
        string activityText, string blackberryPin);

    [OperationContract]
    string StopVisitMonitoring(int clientId, string activityId, 
        string blackberryPin);

    #endregion
}
3
.netwcf.net-4.0
Can you post your service & data contracts? – scmccart
Ah, I didn't catch this before, but I see "An error occurred while executing the command definition", do you happen to be using the entity framework? – scmccart
And what is the inner exception? did you set [DataContract] attribute on your data classes (ClientDetailViewModel and other) – The Smallest
Did you tried calling GetHospitalTelNos() or GetOperationsTelNo()? – The Smallest
@littlechris is there an inner exception? That message about the command definition means a query is going wrong, and the placement of the exception make it seem like the query is executing during serialization. – scmccart

3 Answers

1
votes

It could be serialization error - check if you have [DataContract] or [Serializable] at your return class SelectClientSearch_Result.

1
votes

It may be worth trying to add the following to the web.config:

<serviceHostingEnvironment>
    <baseAddressPrefixFilters>
        <add prefix="http://host:port"/>
    </baseAddressPrefixFilters>
</serviceHostingEnvironment>

If that doesn't work, you could try adding the above and removing the elements: <host></host> (idea from the last link I've linked)

Just adding the following to the web.config may help. 

<system.serviceModel>        
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" />    
</system.serviceModel>

The sites I've read are:

http://msdn.microsoft.com/en-us/library/aa702682.aspx
http://msdn.microsoft.com/en-us/library/ms731336.aspx
http://community.discountasp.net/showthread.php?t=7719

One mentioned the WCF service behaving exactly like an ASMX service which is why I thought it may be relevant.

EDIT:

May be worth a quick read? http://support.microsoft.com/kb/958478

0
votes

The error was coming from elsewhere in the application... WCF errors are not the greatest! :)