Dim instance As IWSTrust13AsyncContract
Dim request As Message
Dim callback As AsyncCallback
Dim state As Object
Dim returnValue As IAsyncResult

returnValue = instance.BeginTrust13Validate(request, callback, state)

<OperationContractAttribute(Name:="Trust13ValidateAsync", AsyncPattern:=True, Action:="http://docs.oasis-open.org/ws-sx/ws-trust/200512/RST/Validate", ReplyAction:="http://docs.oasis-open.org/ws-sx/ws-trust/200512/RSTR/ValidateFinal")> _
Function BeginTrust13Validate ( _
		request As Message, _
		callback As AsyncCallback, _
		state As Object _
) As IAsyncResult

[OperationContractAttribute(Name="Trust13ValidateAsync", AsyncPattern=true, Action="http://docs.oasis-open.org/ws-sx/ws-trust/200512/RST/Validate", ReplyAction="http://docs.oasis-open.org/ws-sx/ws-trust/200512/RSTR/ValidateFinal")] 
IAsyncResult BeginTrust13Validate (
		Message request,
		AsyncCallback callback,
		Object state
)

[OperationContractAttribute(Name=L"Trust13ValidateAsync", AsyncPattern=true, Action=L"http://docs.oasis-open.org/ws-sx/ws-trust/200512/RST/Validate", ReplyAction=L"http://docs.oasis-open.org/ws-sx/ws-trust/200512/RSTR/ValidateFinal")] 
IAsyncResult^ BeginTrust13Validate (
		Message^ request, 
		AsyncCallback^ callback, 
		Object^ state
)

/** @attribute OperationContractAttribute(Name="Trust13ValidateAsync", AsyncPattern=true, Action="http://docs.oasis-open.org/ws-sx/ws-trust/200512/RST/Validate", ReplyAction="http://docs.oasis-open.org/ws-sx/ws-trust/200512/RSTR/ValidateFinal") */ 
IAsyncResult BeginTrust13Validate (
		Message request, 
		AsyncCallback callback, 
		Object state
)

OperationContractAttribute(Name="Trust13ValidateAsync", AsyncPattern=true, Action="http://docs.oasis-open.org/ws-sx/ws-trust/200512/RST/Validate", ReplyAction="http://docs.oasis-open.org/ws-sx/ws-trust/200512/RSTR/ValidateFinal") 
function BeginTrust13Validate (
		request : Message, 
		callback : AsyncCallback, 
		state : Object
) : IAsyncResult