Silverlight WCF throwing The remote server returned an error: NotFound

Question

I'm trying to figure why this is happening. Its super weird

Following are the exact calls i have. Whenever i add that extra datameber at the end of vehicles datacontract i get remote server returned an error: NotFound. when calling pick.SaveVehiclesAsync(infoKey, data);

From Silverlight Side

public void SaveVehicles(InfoKey infoKey, ObservableCollection<VehicleFullInfoModel> vehicleFullInfoCollection, EventHandler<SaveVehiclesEventArgs> callBack)
    {
        var pick = new **ProjectServiceClient**();
        pick.SaveVehiclesCompleted += (sender, e) =>
        {
            if (callBack != null)
                callBack(this, new SaveVehiclesEventArgs(e.Result, e.fault));
        };
        var data =
            new ObservableCollection<VehicleFullInfo>(vehicleFullInfoCollection.Select(rec => rec.Data).ToList());
        pick.SaveVehiclesAsync(infoKey, data);
    }

------------- From WCF service

public interface IProjectService
{
    [OperationContract]
    string SaveVehicles(InfoKey infoKey, IList<VehicleFullInfo> vehicleFullInfoCollection, out FaultContract fault);
}
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class ProjectService : IProjectService
{
    public string SaveVehicles(InfoKey infoKey, IList<VehicleFullInfo> vehicleFullInfoCollection, out FaultContract fault)
    {      
        return PickVehicles.SaveVehicles(infoKey, vehicleFullInfoCollection,  out fault);
    }
}

--------- PickVehicles Class-------

Do Saving to a file

------------ Data Contract

[DataContract]
public class VehicleFullInfo
{
    [DataMember]
    public Vehicle Vehicle { get; private set; }
}

------ Vehicle Data Contract

[DataContract]
public class Vehicle
{
    public Vehicle(Data vehicleData, int index)
    {

    }

    [DataMember]
    public string VehicleNumber { get; set; }

    [DataMember]
    public bool? IsVehicleFromPolicy { get; private set; }

    [DataMember]
    public bool? IsInclude { get; set; }

    [DataMember]
    public string VIN { get; set; }

    [DataMember]
    public VehicleTypeEnum Type { get; set; }

    [DataMember]
    public int? ModelYear { get; set; }

    [DataMember]
    public VehicleMake Make { get; set; }

    [DataMember]
    public string Model { get; set; }

    [DataMember]
    public bool? HasAntiTheft { get; set; }

    [DataMember]
    public AirBagTypeEnum AirBagType { get; set; }

    [DataMember]
    public int? GarageZip { get; set; }

    [DataMember]
    public VehicleUseTypeEnum VehicleUseType { get; set; }

    [DataMember]
    public int? Miles { get; set; }

    [DataMember]
    public int? TrailerValue { get; set; }

    [DataMember]
    public bool? IsMotorhomeSold { get; set; }

    [DataMember]
    public int? TrailerCamperLength { get; set; }

    [DataMember]
    public string TrailerDesc { get; set; }

    [DataMember]
    public int? TrailerGrossWeight { get; set; }

    [DataMember]
    public string ExtraField { get; set; }
}

Solution 1

Not Found is a generic error on Silverlight which can mean a lot of things - cross-domain issues, any non-200 responses from the network, etc. There are a few things you can do, such as enabling tracing on the server side, or looking at the network traffic with a tool such as Fiddler, which will give you more information about your error.

The post at http://blogs.msdn.com/b/silverlightws/archive/2008/04/16/debugging-web-service-usage-in-silverlight-2.aspx has some information which are useful when debugging WCF calls made by Silverlight.

Solution 2

Most of the time this error happens, just right click the ASP.NET IIS server icon that opens every time you run the application near the clock and stop it.

Then try again.