Does anyone know why an ASP.NET web service considers this to be invalid
xml:
<endTime>9999-12-31T23:59:59.9999999</endTime>

while this works:
<endTime>9999-12-31T23:59:59.9999999+01:00</endTime>

this also works:
<endTime>2008-03-21T00:00:00</endTime>

The first example is sent from a 3.5 winform client with DateTime.Max as
endTime. Here's the complete xml:
<?xml version="1.0" encoding="utf-8"?><soap:Envelope
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Header><CesHeader
xmlns="http://mynta.se/ces/order/LogService"><culture>sv-SE</culture><timeZone>W.
Europe Standard
Time</timeZone></CesHeader></soap:Header><soap:Body><GetLogEntries
xmlns="http://mynta.se/ces/order/LogService"><type /><category /><channel
/><servicePacket /><status /><companyName
/><accountOwnerId>-1</accountOwnerId><accountOwnerFirstName
/><accountOwnerLastName
/><accountId>-1</accountId><startTime>2008-03-19T00:00:00</startTime><endTime>9999-12-31T23:59:59.9999999</endTime><bookingId>-1</bookingId></GetLogEntries></soap:Body></soap:Envelope>

The second example is sent from a 1.1 winform client with DateTime.Max as
endTime. Here's the complete xml:
<?xml version="1.0" encoding="utf-8"?><soap:Envelope
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Header><CesHeader
xmlns="http://mynta.se/ces/order/LogService"><culture>sv-SE</culture><timeZone>W.
Europe Standard
Time</timeZone></CesHeader></soap:Header><soap:Body><GetLogEntries
xmlns="http://mynta.se/ces/order/LogService"><type /><category /><channel
/><servicePacket /><status /><companyName
/><accountOwnerId>-1</accountOwnerId><accountOwnerFirstName
/><accountOwnerLastName
/><accountId>-1</accountId><startTime>2008-03-20T00:00:00.0000000+01:00</startTime><endTime>9999-12-31T23:59:59.9999999+01:00</endTime><bookingId>-1</bookingId></GetLogEntries></soap:Body></soap:Envelope>

The third example is sent from a 3.5 winform client with a 'normal' date.
Here's the complete xml:
<?xml version="1.0" encoding="utf-8"?><soap:Envelope
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Header><CesHeader
xmlns="http://mynta.se/ces/order/LogService"><culture>sv-SE</culture><timeZone>W.
Europe Standard
Time</timeZone></CesHeader></soap:Header><soap:Body><GetLogEntries
xmlns="http://mynta.se/ces/order/LogService"><type /><category /><channel
/><servicePacket /><status /><companyName
/><accountOwnerId>-1</accountOwnerId><accountOwnerFirstName
/><accountOwnerLastName
/><accountId>-1</accountId><startTime>2008-03-20T00:00:00</startTime><endTime>2008-03-21T00:00:00</endTime><bookingId>-1</bookingId></GetLogEntries></soap:Body></soap:Envelope>

The 3.5 client is just the 1.1 client converted to 3.5.

I get either a 400 Bad Request (when compiling the web service under 3.5)
and a 500 internal server error with the message: 'Element' is an invalid
node type. Line 1 position 713 (when compiled under 1.1). Anyone have any
ideas?

Peter