Using AJAX methods from a widget (UserControl) - Sitefinity - Front- & Back-End Development

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Posted by Community Admin on 25-Oct-2011 00:00

Hi,

I want to add a bit of AJAX magic to one of my pages. Just call a server-side method from JS, and get the result.
This turns out to be more difficult than expected.

First, I found out I can't have AJAX methods in a UserControl (http://stackoverflow.com/questions/5818265/pagemethods-is-not-defined), as I work with UserControls (ascx) rather than Pages (aspx), since the result is supposed to be a widget added to the Sitefinity Toolbox.

From what I read, I have to create and use a web service to be able to achieve that (I'm not too happy about this, this is unneeded complexity, but oh well).
So, I followed the steps of this article: http://msdn.microsoft.com/en-us/magazine/cc163499.aspx

And now, after doing everything detailed in this article, I hit the following JS error as I call my AJAX method:

q is not a function coming from line 3345 of Telerik.Sitefinity.Resources.Scripts.MicrosoftAjax.debug.js

This is my JS code:

Namespace.Class.HelloWorld("test", onComplete, onFailure);

function onComplete(result)

alert(result);

function onFailure(result)

alert("Error: " + result.get_message());

My web service class:

using System.ComponentModel;

using System.Web.Script.Services;

using System.Web.Services;

namespace Namespace

[WebService(Namespace = "http://tempuri.org/")]

[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

[ToolboxItem(false)]

[ScriptService]

public class Class : System.Web.Services.WebService

[WebMethod]

public string HelloWorld()

return "Hello World";

And I added this to my master page:

<asp:ScriptManager ID="scriptManager" runat="server">

<Services>

<asp:ServiceReference Path="~/Namespace/Class.asmx" />

</Services>

</asp:ScriptManager>

What am I doing wrong?
Is there a better way to do this?

By the way, why is this "debug" script file added even if I build in release mode? I'm thinking it's either poorly named and isn't actually a debug file, or it shouldn't be included.

Thanks.

Posted by Community Admin on 26-Oct-2011 00:00

I managed to get it working.

The problem was that I passed a param on the JS side (the "test" string), while the server-side method doesn't expect a parameter. So this works either by removing the "test" param in the JS, or by making it so the HelloWorld method expects a string parameter.

I'd still appreciate an answer to my last question.

Thanks.

Posted by Community Admin on 28-Oct-2011 00:00

Hi Thomas,

The .pdb files are added only in debug. There is no Sitefinity specific setting concerning generation of debug databases. I have tested disabling debug and no .pdb was generated.

<compilation debug="false" targetFramework="4.0">

Enabling it afterwards generated .pdb. Have you deleted all .pdb when building in release?

Greetings,
Stanislav Velikov
the Telerik team

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