Hello there - I'm quite new to WebServices and asp.net and I've exhausted my
troubleshooting capacity on this one.

I am running a lookup method against a remote webservice and am expecting
some data back. It would seem as if the response I am getting back is
actually missing a field and/or cannot be converted from '' (Blank?) to a
DateTime DataType.

On the face of it, it seems as if a dateTime conversion is failing - at
least from my limited view of things.

Is it possible to narrow down which property is being improperly formatted?

What other kinds of tests can I run?

Considering the WebService definition/proxy was built using the WSDL tool
from a schema file, how appropriate might it be to modify the resultant
service difinition in order to fix this (if I actually find what the problem
is!)?

Sincerely - n
***************************************************************

Server Error in '/Test' Application.
--------------------------------------------------------------------------------

The string '' is not a valid AllXsd value.
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information
about the error and where it originated in the code.

Exception Details: System.FormatException: The string '' is not a valid
AllXsd value.


Stack Trace:


[FormatException: The string '' is not a valid AllXsd value.]
   System.Xml.Schema.XsdDateTime..ctor(String text, XsdDateTimeFlags kinds)
+1017115
   System.Xml.XmlConvert.ToDateTime(String s, XmlDateTimeSerializationMode
dateTimeOption) +38
   System.Xml.Serialization.XmlCustomFormatter.ToDateTime(String value) +60
   System.Xml.Serialization.XmlSerializationReader.ToDateTime(String value)
+30
   Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderpmService.Read11_TicketLookupType(Boolean
isNullable, Boolean checkType) +2968
   Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderpmService.Read12_LookupTicketResponseType(Boolean
isNullable, Boolean checkType) +466
   Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderpmService.Read18_lookupTicketResponse()
+166
   Microsoft.Xml.Serialization.GeneratedAssembly.ArrayOfObjectSerializer1.Deserialize(XmlSerializationReader
reader) +40
   System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader,
String encodingStyle, XmlDeserializationEvents events) +161

[InvalidOperationException: There is an error in XML document (8, 463).]
   System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader,
String encodingStyle, XmlDeserializationEvents events) +637
   System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader,
String encodingStyle) +32
   System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage
message, WebResponse response, Stream responseStream, Boolean asyncCall)
+1671
   System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String
methodName, Object[] parameters) +204
   pmService.lookupTicket(LookupTicketRequestType lookupTicketRequest) +47
   _Default.ticketLookup(String tNum) in
c:\Inetpub\wwwroot\pmwsTest\Default.aspx.cs:32
   _Default.TicketLookupButton_Click(Object sender, EventArgs e) in
c:\Inetpub\wwwroot\pmwsTest\Default.aspx.cs:46
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
+107
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String
eventArgument) +7
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl, String eventArgument) +11
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
   System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1746

You can try to write code

if string.IsNullOrEmpty(s) return Null;

it can convert empty string to datetime null

Thanks for the reply - I still require some assistance as I'm not sure where to implement this check...there are a few dozen string and datetime values expected in the lookup results.

Again, I am a complete novice in this realm - I can see the classes that make up the response type and all properties that are supposed to be DateTime - when retreiving data from the remote web service are the properties represented by the WSDL generated classes being 'Set' and/or 'Get'? I can't quite visualise the interaction.

Is there a way to find out which property in particular is failing?

Thanks again!

n 

Okay - that was slightly boring but I did finally get to the problematic property.

 Thanks for the guidance!

n