Building a rich client using web services and ie6 - Asynchronous requests.

[Bill Zack]

I understand that it is possible to build a rich client using IE6 and
Web Services. I understand the model using webservice.htc to make
synchronous requests to a web service from the browser.

In the case where the Web Service is hosted in IIS (ASP.NET) I am a
little confused as to how asynchronous calls would work. Wouldn't
that requre that a request be initiated by the server to the client?
Or would the client have to make a request later to collect the
response?

Bill Zack

[Arthur Nesterovsky]

Hi,

> In the case where the Web Service is hosted in IIS (ASP.NET) I am a
> little confused as to how asynchronous calls would work. Wouldn't
> that requre that a request be initiated by the server to the client?
> Or would the client have to make a request later to collect the
> response?

It seems that you don't understand how asynchronous calls work.
So, I offer to read the following articles from MSDN:

[url]http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnservice/html/service09032002.asp[/url]

[url]http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnservice/html/service10012002.asp[/url]

[url]http://msdn.microsoft.com/msdnmag/issues/03/06/Threading/default.aspx[/url]


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With best wishes, Arthur Nesterovsky
Please visit my home page:
[url]http://www.nesterovsky-bros.com[/url]

[MSFT]

Hi Bill,

You may refer to following article to see if it will help:

Communicating with XML Web Services Asynchronously
[url]http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/htm[/url]
l/cpconinvokingwebservicesasynchronously.asp


Luke
Microsoft Online Support

Get Secure! [url]www.microsoft.com/security[/url]
(This posting is provided "AS IS", with no warranties, and confers no
rights.)

[Bill Zack]

I did get a couple of responses to this question, and they listed some
URLs that were very helpfull in explaining how to make asynchronous
requests from an ASP.NET client. In my case, however, the Web
Services Client will be an Internet Explorer (IE6) application making
Web Service request to an ASP.NET Web Service hosted under IIS. IE
will be using the Webservice.htc client-side HTML component to make
the requests.

The articles listed the following methods to recieve the final request
completion:
1. Polling
2. Wait handles
3. Callbacks

I would like to know if anything other than #1 will work in this case.
I can not quite see how an ASP.NET Web Service can initiate a session
with IE to use #2 or #3. (Although it would be great if it could.)

Any ideas?
Bill Zack


[email]wzack@compuserve.com[/email] (Bill Zack) wrote in message news:<e32aaa56.0310291950.b688f25@posting.google.c om>...

> I understand that it is possible to build a rich client using IE6 and
> Web Services. I understand the model using webservice.htc to make
> synchronous requests to a web service from the browser.
>
> In the case where the Web Service is hosted in IIS (ASP.NET) I am a
> little confused as to how asynchronous calls would work. Wouldn't
> that requre that a request be initiated by the server to the client?
> Or would the client have to make a request later to collect the
> response?
>
> Bill Zack

[MSFT]

Hi Bill,

You may refer to this article to see if it will help:

Accessing Web Services From DHTML
[url]http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dndude/html[/url]
/dude01222001.asp

Luke
Microsoft Online Support

Get Secure! [url]www.microsoft.com/security[/url]
(This posting is provided "AS IS", with no warranties, and confers no
rights.)