Previous post had incorrect definition of DataResponse:
[DataContract(Namespace = "http://WCFService1.DataContracts/2007/03",
Name = "DataResponse")]
public partial class DataResponse
{
private System.Data.DataSet DataCollectionField;
private System.String RespTextField;
[DataMember(EmitDefaultValue=true, IsRequired = false, Name =
"DataCollection", Order = 0)]
public System.Data.DataSet DataCollection
{
get { return DataCollectionField; }
set { DataCollectionField = value; }
}
[DataMember(IsRequired = false, Name = "RespText", Order = 1)]
public System.String RespText
{
get { return RespTextField; }
set { RespTextField = value; }
}
}
"Scott Holman" <> wrote in message
news:...
>I have defined a message contract (MsgRespData) and data
>contract(DataResponse) listed below. The data contract has two fields
>(System.String and System.Data.Dataset) and the message contract contains
>the data contract. The service contract has a single method that returns
>MsgRespData. When I test the service returning a instaniated DataSet in
>DataResponse everything is fine. However, when the DataSet is null I
>encounter the exception listed below. If I replace the DataSet in the
>DataResponse contract with my own serializable class and return a null
>reference the service works correctly.
>
> Any insights would be appreciated. Thanks
>
> ************************************************** ************************
> System.InvalidOperationException: No corresponding start element is open.
> Server stack trace:
> at System.Xml.XmlBaseReader.ReadEndElement()
> at
> System.ServiceModel.Dispatcher.OperationFormatter. DeserializeBodyContents(Message
> message, Object[] parameters, Boolean isRequest)
> at
> System.ServiceModel.Dispatcher.OperationFormatter. DeserializeReply(Message
> message, Object[] parameters)
> at
> System.ServiceModel.Dispatcher.ProxyOperationRunti me.AfterReply(ProxyRpc&
> rpc)
> at
> System.ServiceModel.Channels.ServiceChannel.Handle Reply(ProxyOperationRuntime
> operation, ProxyRpc& rpc)
> at System.ServiceModel.Channels.ServiceChannel.Call(S tring action,
> Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[]
> outs, TimeSpan timeout)
> at System.ServiceModel.Channels.ServiceChannel.Call(S tring action,
> Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[]
> outs)
> at
> System.ServiceModel.Channels.ServiceChannelProxy.I nvokeService(IMethodCallMessage
> methodCall, ProxyOperationRuntime operation)
> at System.ServiceModel.Channels.ServiceChannelProxy.I nvoke(IMessage
> message)
>
> ************************************************** ******************
>
> [MessageContract]
> public class MsgRespData
> {
> private WCFService1.DataContracts.DataResponse respDataField;
>
> [MessageBodyMember(Order = 0)]
> public WCFService1.DataContracts.DataResponse respData
> {
> get { return respDataField; }
> set { respDataField = value; }
> }
>
> }
>
> [DataContract(Namespace = "http://WCFService1.DataContracts/2007/03",
> Name = "DataResponse")]
> public partial class DataResponse
> {
> private MyClass DataCollectionField;
> private System.String RespTextField;
>
> [DataMember(EmitDefaultValue=true, IsRequired = false, Name =
> "DataCollection", Order = 0)]
> public MyClass DataCollection
> {
> get { return DataCollectionField; }
> set { DataCollectionField = value; }
> }
> [DataMember(IsRequired = false, Name = "RespText", Order = 1)]
> public System.String RespText
> {
> get { return RespTextField; }
> set { RespTextField = value; }
> }
>
> }
>
>
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