"John O'Neill" <msdn@exact3ex_removethis.co.uk> wrote in message
news:ep6nhFx$EHA.1400@TK2MSFTNGP11.phx.gbl...
> Hi
>
> I have been using the UsernameSigningCode console sample supplied with WSE
> 2.0 SP2 and managed to get it working with ease. Based on the code from
> console sample, I created a similar windows forms client and got that
> working easily too. My problem is when I call web methods asynchronously,
> ie, instead of calling serviceProxy.StockQuoteRequest(symbols) I call
> serviceProxy.BeginStockQuoteRequest(symbols, new
> AsyncCallback(StockQuoteCallback), null); and in my callback method I
> display the results in a multiline text box on the form. Mostly, everthing
> is fine and works as expected, but every now and then I get the following
> error :
>
> System.Security.Cryptography.CryptographicException: WSE502: The target
> element referenced by the following id can not be found in the message:
> Id-8fe25618-0141-4b4a-b767-bdc26ea70a30. Make sure that the element is
> present at the time when the signing or encryption operation is performed.
> at System.Web.Services.Protocols.WebClientAsyncResult.WaitForResponse()
> at System.Web.Services.Protocols.WebClientProtocol.EndSend(IAsyncResult
> asyncResult, Object& internalAsyncState, Stream& responseStream)
> at
>
System.Web.Services.Protocols.SoapHttpClientProtocol.EndInvoke(IAsyncResult
> asyncResult)
> at
>

> asyncResult) in C:\Program Files\Microsoft
>

> 63
> at UsernameSignCodeFormsClient.Form1.StockQuoteCallback(IAsyncResult
> result) in c:\program files\microsoft
>

> 140
>
> Like I say, normally everything runs ok and I just get the error every now
> and then. I wanted to investigate further, so I made a modification to my
> test form so that it makes a series of 10 calls to to the
> BeginStockQuoteRequest in a loop with a 1 second delay between each call
and
> now I get the error more or less everytime but at random points within the
> loop, ie the error might occur on the 5th callback, or 7th callback etc.
>
> I hope someone can help as I don't even know where to begin to look to
sort
> it out!
>
> Thanks
>
> John
>
>

"Sidd" <ElCid@hotmail.com> wrote in message
news:uujMPb3AFHA.3376@TK2MSFTNGP12.phx.gbl...
> Hi John,
>
> Do you see this problem if you invoke this sample using the non-async
> way as well? i.e. serviceProxy.StockQuoteRequest instead of the
> serviceProxy.BeginStockQuoteRequest. Did you modify this quickstart in
> any
> other possible way? The reason I ask is that if not, then I am probably
> going to investigate this in more detail on my end.
>
> Thanks,
>
> Sidd [MSFT]
>
> "John O'Neill" <msdn@exact3ex_removethis.co.uk> wrote in message
> news:ep6nhFx$EHA.1400@TK2MSFTNGP11.phx.gbl...
>> Hi
>>
>> I have been using the UsernameSigningCode console sample supplied with
>> WSE
>> 2.0 SP2 and managed to get it working with ease. Based on the code from
>> console sample, I created a similar windows forms client and got that
>> working easily too. My problem is when I call web methods asynchronously,
>> ie, instead of calling serviceProxy.StockQuoteRequest(symbols) I call
>> serviceProxy.BeginStockQuoteRequest(symbols, new
>> AsyncCallback(StockQuoteCallback), null); and in my callback method I
>> display the results in a multiline text box on the form. Mostly,
>> everthing
>> is fine and works as expected, but every now and then I get the following
>> error :
>>
>> System.Security.Cryptography.CryptographicException: WSE502: The target
>> element referenced by the following id can not be found in the message:
>> Id-8fe25618-0141-4b4a-b767-bdc26ea70a30. Make sure that the element is
>> present at the time when the signing or encryption operation is
>> performed.
>> at
>> System.Web.Services.Protocols.WebClientAsyncResult.WaitForResponse()
>> at
>> System.Web.Services.Protocols.WebClientProtocol.EndSend(IAsyncResult
>> asyncResult, Object& internalAsyncState, Stream& responseStream)
>> at
>>
> System.Web.Services.Protocols.SoapHttpClientProtocol.EndInvoke(IAsyncResult
>> asyncResult)
>> at
>>
> UsernameSignCodeFormsClient.StockServiceWse.EndStockQuoteRequest(IAsyncResul
> t
>> asyncResult) in C:\Program Files\Microsoft
>>
> WSE\v2.0\Samples\CS\QuickStart\UsernameSigning\Code\UsernameSignCodeFormsCli
> ent\UsernameSigningProxy.cs:line
>> 63
>> at UsernameSignCodeFormsClient.Form1.StockQuoteCallback(IAsyncResult
>> result) in c:\program files\microsoft
>>
> wse\v2.0\samples\cs\quickstart\usernamesigning\code\usernamesigncodeformscli
> ent\form1.cs:line
>> 140
>>
>> Like I say, normally everything runs ok and I just get the error every
>> now
>> and then. I wanted to investigate further, so I made a modification to my
>> test form so that it makes a series of 10 calls to to the
>> BeginStockQuoteRequest in a loop with a 1 second delay between each call
> and
>> now I get the error more or less everytime but at random points within
>> the
>> loop, ie the error might occur on the 5th callback, or 7th callback etc.
>>
>> I hope someone can help as I don't even know where to begin to look to
> sort
>> it out!
>>
>> Thanks
>>
>> John
>>
>>
>
>