Unable to call web service from web page

 I know this has probably been asked dozens of times before but as it's a fairly general, simple question I'm not sure what to search under.

I have a very simple web service that I want to make a callback to (from an AJAX.NET ScriptManager). At this stage all it returns is the out-of-the-box Hello World string. The web service, DataService.asmx, is as follows:

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class DataService : System.Web.Services.WebService
    public string HelloWorld()
        return "Hello World";


And here is the page which I'm calling the service from:


<script type="text/javascript">
    function useService()
        ret = DataService.HelloWorld(OnComplete, OnTimeOut, OnError);
    function OnComplete(retResult)
    function OnTimeOut(retResult)
    function OnError(retResult)
// -->

<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true">
        <asp:ServiceReference Path="DataService.asmx" />

<input id="Button1" type="button" value="button" onclick="useService()" />

I've verified that the service works as expected (by running it directly from the browser). But when I click on the button on the page above, nothing happens. I've run it in debug and the web service is never called. The web service exists at the same level as both the master page and the page I'm trying to call it from.

Can anyone explain to me why the web service isn't being called.

[I've based the code above on the www.asp.net video for AJAX.NET's predictive fetch demo (http://www.asp.net/learn/videos/view.aspx?tabid=63&id=100).]

6/26/2007 7:37:17 PM
asp.net.xml-web-services 7071 articles. 0 followers. Follow

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Suggestion:  If the web service is not called then you may want to post this on the AJAX forum since it may be an AJAX problem

If an answer has been provided to you question please mark it as an answer.
6/26/2007 9:04:28 PM


Check out this article. http://www.devx.com/dotnet/Article/32508

Please mark the post as Answer if it has helped you or provided you with the solution.

6/28/2007 7:16:49 AM

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