AJAX Javascript call to web service fails when (.asmx) is placed into sub directory
Problem Description
===================
AJAX Javascript call to web service fail with is ‘null or not an object’ , when Web service is placed into sub directory say Service
Error
=====
A Runtime Error has occured
Do you Wish to debug?
Line:53
Error: 'SupportIssue.BrokenService' is null or not an object
Web service code
===================
namespace SupportIssue
{
[WebService(Namespace = "https://tempuri.org/")]
[ScriptService]
public class WorkingService : System.Web.Services.WebService
{
[WebMethod]
public string HelloWorld()
{
return "Hello World";
}
}
}
In Default.aspx, registering through Script manager
================
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="~/WorkingService.asmx" />
<asp:ServiceReference Path="~/services/BrokenService.asmx" />
</Services>
</asp:ScriptManager>
Calling the web service method in Javascript in Default.aspx
=============
<script language="javascript" type="text/javascript">
//This works because it is in the same directory
var x = SupportIssue.WorkingService.HelloWorld(OnSucceeded, OnFailed);
//The following line break in to error!!!
var y = SupportIssue.BrokenService.HelloWorld(OnSucceeded, OnFailed);
function OnSucceeded(result, userContext, methodName)
{
alert(result);
}
function OnFailed(error, userContext, methodName)
{
alert(error);
}
</script>
The above line would fail as the web service has been placed in sub directory called services
Same line would succeed if we put out web service (.asmx) file in application Root Folder
-- Tracking through Fiddler trace, notice we are making call to jsdebug
Note : The "/jsdebug" suffix is used by AJAX to get the debug release of Javascript proxy for web service and "/js" for released version
For GET /SupportIssue/WorkingService.asmx/jsdebug HTTP/1.1
Response:
HTTP/1.1 200 OK
For GET /SupportIssue/Service/BrokenService.asmx/jsdebug HTTP/1.1
Response:
HTTP/1.1 500 Internal Server Error
-- Checking IIS log we got 500
2008-04-26 05:59:02 W3SVC1 127.0.0.1 GET /SupportIssue/Service/BrokenService.asmx/jsdebug - 80
FAREAST\jaskis 127.0.0.1 500 0 0
-- Try Browsing jsdebug for failed request from IE
https://localhost/SupportIssue/Service/BrokenService.asmx/jsdebug
Server Error in '/SupportIssue' Application.
----------------------------------------------------------
No web service found at: /SupportIssue/Service/BrokenService.asmx.
Exception Details: System.InvalidOperationException: No web service found at: /SupportIssue/Service/BrokenService.asmx.
Workaround
===========
1) Issue seems to be with Web application project and not for Web site, because for WAP Namespaces are added for before class beginning so use Web Site project instead
For example
namespace SupportIssue
{
public class WorkingService.....
}
2) If want to use WAP then change the namespace of classes within the sub directory corresponding to sub directory name only*
Directory/folder Name = Service
As default setting we have namespace(project name) added for WAP
namespace SupportIssue
{
}
Change it to
namespace SupportIssue.Service
{
}
and
var y = SupportIssue.BrokenService.HelloWorld(OnSucceeded, OnFailed);
to
var y = SupportIssue.Services.BrokenService.HelloWorld(OnSucceeded, OnFailed);
That’s it.
Hope it helps :-)
Comments
Anonymous
February 13, 2009
Thanks...I ran into this same problem. Your solution worked, but only in C#. When I try it in VB.NET, I still have the same problem. Have you tried it in vb.net?Anonymous
May 10, 2009
Nate, Sorry for later reply.Yup, it indeed works with VB.NetAnonymous
June 13, 2009
話題の小向美奈子ストリップを隠し撮り！入念なボディチェックをすり抜けて超小型カメラで撮影した神動画がアップ中！期間限定配信の衝撃的映像を見逃すなAnonymous
June 29, 2009
I had exactly the same problem. I checked all my namespaces and everything looked OK. The only difference was that I placed a copy of a working ASMX in a subdirectory and modified the namespaces afterwards. My problem was caused by the class attribute in the ASMX file. (not the code behind!!) NOTE: when you make a copy of an existing asmx file you have to change the class attribute in your asmx file. Otherwise during runtime a proxy of the wrong class is generated. Since doubleclicking the asmx file in Visual Studio opens the .asmx.cs file this cannot be done directly from Visual Studio!!!Anonymous
November 23, 2009
The last comment (on June 30) kept me from pulling my last hair out! It helped me fix a problem that had been bugging me for days.Anonymous
June 28, 2010
We have exactly the same problem and your post helped me to figure out the solution. Keep up the good work mate.Anonymous
August 20, 2010
I have the same problem and at same location and when I keep a break point and check near the SupportIssue.BrokenService.HelloWorld(........, ...................) I cannot getinto HelloWorld method. It gives Microsoft JScript runtime error: 'SupportIssue.BrokenService.HelloWorld' is null or not an object and it doesnot go in onsucceeded or on failed methods ever.. Please help me with the issue ..Anonymous
August 20, 2010
I have the same problem and at same location and when I keep a break point and check near the SupportIssue.BrokenService.HelloWorld(........, ...................) I cannot getinto HelloWorld method. It gives Microsoft JScript runtime error: 'SupportIssue.BrokenService.HelloWorld' is null or not an object and it doesnot go in onsucceeded or on failed methods ever.. Please help me with the issue ..Anonymous
August 20, 2010
I have the same problem and at same location and when I keep a break point and check near the SupportIssue.BrokenService.HelloWorld(........, ...................) I cannot getinto HelloWorld method. It gives Microsoft JScript runtime error: 'SupportIssue.BrokenService.HelloWorld' is null or not an object and it doesnot go in onsucceeded or on failed methods ever.. Please help me with the issue ..Anonymous
December 13, 2012
The comment has been removed