.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Web script enabled service - AJAX problem

Posted By:      Posted Date: October 06, 2010    Points: 0   Category :WCF

I have the following REST GET service which is web script enabled using <enableWebScript /> attribute in Web.config.


[WebInvoke (Method ="GET" , BodyStyle =

View Complete Post

More Related Resource Links

Problem when ajax enabled WCF Service returns EDM Objects

Hi there, Could you please help me with the following problem? - I have ajax enabled WCF service. It returns Customer Entity Type.  For example: [OperationContract]             public List<Customer> GetCustomers()        {            using (NorthwindEntities context = new NorthwindEntities())            {                return context.Customers.Take(10).ToList();            }        }  - But AJAX Client Library cannot display Customer( as Entity). I cannot see data in browser. Even it hits the breakpoint and returns 10 customers. - But if I make a plain class called "Customer2" with same fields and copy all the "Customer" into "Customer2" then it works. In this case I return List<Customer2>. Then it works like a champ and I can see customer in AJAX/DataView/List. - Why I need to create a class? Is this JSON problem? DataView accepts JSON data format. - I use VS2010, AJAX 4.0. - Do I need to add something else along with [OperationContract].   Regards, Rajan  

With Anonymous access disabled, is there any way to use an AJAX-enabled WCF Service?

I have a website where anonymous access is disabled but I want to user an ajax-enabled WCF service. Configuring the service's binding security to use "TransportCredentialOnly" with clientCredentialType="Windows" seems like the obvious thing to do; indeed, many posts in various places suggest this approach. Unfortunately, however, it doesn't work. I always get the error "Security settings for this service require 'Anonymous' Authentication but it is not enabled for the IIS application that hosts this service." How can I configure the service to function correctly. I'm running IIS 7.5 with .Net framework 4.0. Thanks.

Problem registering client side script to interact with AJAX controls

Im using some animationExtenders in my project. The thing is, the objects to be animated are created programmatically, hence i need to also build programmatically the javascript code that will interact with them.It runs properly but, when i interact with these animated controls and the javascript functions are supposed to get to work, i keep getting the usual run-time error saying that the javascript functions are not defined. But, if i check the final html code generated, i can see how all the controls i built programmatically are there ,as well as the script.Tried both RegisterStartupScript and RegisterClientScriptBlock, no luck.Any advice? thanks in advance

Adding AJAX-enabled WCF Service to the Solution throws an error

Hi I am just trying to learn Ajax enabled WCF service, when I try to create a new web application and add new item "AJAX-enabled WCF Service" I get an error message that "The extension of type 'System.ServiceModel.Configuration.WebScriptEnablingElement, System.ServiceModel.Web, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35' is not registered in the extension collection 'behaviorExtensions'. I had .net2.0/VS2005 and then I installed VS2008. I thought it might be an issue with Machine.config. So I am attaching my machine.config info. <?xml version="1.0" encoding="UTF-8"?>    <!--    Please refer to machine.config.comments for a description and    the default values of each configuration section.     For a full documentation of the schema please refer to    http://go.microsoft.com/fwlink/?LinkId=42127     To improve performance, machine.config should contain only those    settings that differ from their defaults.    -->    <configuration>      <configSections>    <section name="appSettings" type="System.Configuration.AppSettingsSection, System.Configuration, Version=, Culture=neutral, Publi

How to view AJAX-enabled WCF service (.svc) file in browser

Hi I have created an AJAX-enabled WCF project TestWCFAjax having Default.aspx that uses the Add.svc web service.  When I select Default.aspx and run the app in VS 2008. It works perfectly, calls the webservice to do the desired task. But, I have following questions: 1. When I select the Add.svc.cs and run through VS2008, it throws an error "The type 'TestWCFAjax.Add', provided as the Service attribute value in the ServiceHost directive could not be found.". And the web url on the browser points to http://localhost:4960/Add.svc. I didn't create any virtual directory. I tried creating one that points to my application folder - TestWCFAjax. Still it doesn't work. How can I view Add.svc service on the browser like what we can do with normal WCF service? 2. How can I use Add.svc (AJAX-enabled WCF Service) in another web application? Regards

Master Page, web service and Ajax autocomplete extender problem.

 I will appreciate very much any help about this issue.  I have been dealing with it for the last week and I couldn't detail and complete examples about this issue. The problem: I have a text box and ajax autocomplete control extender in my Master Page that it is not working at all.  When I type some characters on the text box it doesn't trigger the autocomplete. I have a web service that contains the function code. I est my code on a single Web Page (No Master Page) and it works perfectly.  Also, it works fine if I include the text box and the extender on the Content Page instead of on the Master Page.  It is important to keep the text box in the Master Page for me. I am using Visual Studio 2008 and ASP 3.5.   tHANK YOU VERY MUCH. here is my code:   MASTER PAGE. <%@ Master Language="VB" AutoEventWireup="true" CodeFile="MasterPage.master.vb" Inherits="MasterPage" %> <%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="ajax" %> <%@ Import Namespace = "System.Data" %> <%@ Import Namespace = "System.Data.SQLClient" %> <%@ Import Namespace = "System.Web.Script.Services" %> <%@ Import Namespace="System.Web" %> <%@ Import Namespace="System.Web.Services&

How to get web service address in a ajax enabled page to use it in javascript


Hii everyone,

I have a requirement where I am using web service from  a server and adding that to a client

website .I have referenced the web service in my client web site  but not able to get the

address of web service. When I click on the path I get the disco file of web service and

the result is not displayed.My code is like this

</p><p>&lt;script&nbsp; language="javascript"&gt;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; function btnadd_Click() {

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; var x = document.getElementById('txtA').value;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; var y = document.getElementById('txtB').value;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; var ans = WebService.Add(parseInt(x), parseInt(y), OnComplete, OnTimeOut, onerror);
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return true;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }


Deplying SQL Analysis service database using script problem with Impersonation


I have a problem with deploying SQL Analysis database from dev server to production , because I do not have an admin privileges , I cannot use Create script

The only action that I have , is to execute Alter Script against Any Empty database,


However I cannot use ImpersonateServiceAccount because it needs  Admin privileges

So, I always use ImpersonateCurrentUser as you know, I have to supply my credential.


are there any way that I can Deploy the db to the production  with the same impersonation type ImpersonateServiceAccount

as it was before?


thank you

Getting intellisense to work in VS 2010 for a ajax-enabled WCF Service


Hi all,

I'm experimenting with WCF services inside of a test project.  I have seen documentation on various blogs etc. that tell me that Intellisense is available for WCF services that I write.  However, I cannot get this intellisense to work in VS 2010.  I have tried the same simple steps in VS 2008 and can get intellisense working.

Has something changed here?  Is there a chance I am doing something wrong?

I create a new web application project.
I add an ajax-enabled WCF Service.
I add the script manager control to the page and then reference my wcf service.
When I go to create an object proxy to the service the intellisense is not available.
I know my code is working because I tested it.  It can call the web service and gets the expected result.  Just no intellisense.

I've also tried referencing intellisense from a separate .js file using the following technique:
/// <reference path="MicrosoftAjax.js" />
/// <reference path="MyService.svc" />

This has also not worked.  I have verified that my pathing information etc. is correct. 

Anyway, this is driving me nuts so I'm hoping somebody can shed some light on this.

AJAX enabled WCF Service Question


From a pure html/javascript (jquery)/ajax client I need to access a WCF Service. For this reason I (probably) need to create an AJAX enable WCF Service.
Should I create an ASP.NET empty web application project and in this project add an AJAX enabled WCF Service or should I create an WCF Service Appication or WCF Service Library project and add in one of these projects my AJAX enabled WCF Service?



Ajax enabled WCF Service stops working with Undefined error


 I have an Ajax Enabled WCF service that I call from Javascript.  It works fine, but often after I make unrelated changes to the website it will fail and Javascript will report an 'Undefined' error.  I can easily fix it by deleting the service, removing the system.serviceModel section of the Web.config and then recreating the service.  I don't have to change any of the references in the .aspx or .js files.  Also, the replacement service has identical code in the .config, .cs and .svc files (I don't see any differences).  This morning, I only made some cosmetic changes and the service stopped working again. 

Any insight into what I am doing wrong?

Problem in AJAX enabled pages when submitting or posting back


Hi people,

Imagine a simple page containing these controls:

<asp:ScriptManager ID="ScriptManager1" runat="server">
    <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <div id="testDIV">
            <div style="background-color:#DDDDDD">
                <br />
                <asp:Label runat="server" Text="First" ID="Label1"></asp:Label>
                <br />
                <br />
                <asp:Button ID="Button1" runat="server" Text

Ajax Enabled Gridview using JavaScript in ASP.NET

Before explaining the article, I would like to thank all readers who read my article and voted for it. Your appreciation for my article gives me strength to write more good articles. Hope in future I will get your valuable comments and suggestions. Now I won't waste your time and come back to the topic. I have written this article on 'Ajax Enabled Gridview Using JavaScript in ASP.NET'. In this article, I will show you how to make a Gridview using a simple HTML table, JavaScript and XML HTTP for Ajax call without using any ASP.NET control.

Using Code

Embed Youtube inside Ajax Html Editor- problem



When inserting a simple embed of youtube inside the ajax editor, on firefox and chrome problems occur. On the other hand on internet explorer 8 everything works fine. I found this solution http://www.nopcommerce.com/boards/t/4228/bug-in-ajax-html-editor.aspx . 

My question is where do I find the DesignPanel.pre.js ?


Roderick Vella

Problem to obtain client IP on web service



I'm having problems to obtain the client IP on web service. Here's my scenario:

One server with Windows 2003, hosting the web service using .Net Framework 2.0, with IP and host name ServerTransaction.
Other server with Windows 2003, hosting a web application using .Net Framework 2.0, that consuming the web service on  ServerTransaction, with IP and host name ServerApplication.
Many other computers on the local network (IPs:,,, ...) acessing the web application on ServerApplication.

On the code of the web service I've tried to use HttpContext.Current.Request.UserHostAddress or HttpContext.Current.Request.ServerVariables("REMOTE_ADDR") or HttpContext.Current.Request.ServerVariables("HTTP_X_FORWARDED_FORR"), but always I can only get the IP of ServerApplication (

Any idea or tip?

Thanks and sorry for my bad english.

problem compiling web service


Using Visual Studio 2010.

I created a webservice GetDemographicData asmx, GetDemographicData asmx.cs and then used wsdl to create a proxy, then used csc.exe to create dll.

first time when I generate proxy, it looks and works fine, but when I make some changes to my webservice and regenerate proxy the following problems occur:

1.I lost the function: public DataSet Get_GetDemographicData(string CaseNum, int Version)
2. The namespace changed to my-labs

Why?? Please see my code below:

Any help is appreciated. Thanks.

<%@ WebService Language="C#" CodeBehind="~/App_Code/GetDemographicData.cs" Class="GetDemographicData" %>
GetDemographicData.cs was created under AppDataas follows:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;

/// <summary>
/// Summary description for GetCurrentReportVersion
/// </summary>
[WebService(Namespace = "http://localhost/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, u

problem in consuming WCF service through Window application


I have a silverlight application and WCF service all made in VS 2010 , i had hosted my site to web server which contain Window 2008 and IIS 7.0

now the problem is i have another application which is a window application developed in VS2008 , when i try to add the service reference it gives me error


The document at the url was not recognized as a known document type.

The error message from each known type may help you fix the problem:

- Report from 'DISCO Document' is 'There was an error downloading 'http://dev_qa.emspa.com/HRDev3/Service.svc?disco'.'.

  - The request failed with HTTP status 400: Bad Request.

- Report from 'WSDL Document' is 'The document format is not recognized (the content type is 'text/html; charset=UTF-8').'.

- Report from '' is 'The document format is not recognized (the content type is 'text/html; charset=UTF-8').'.

- Report from 'XML Schema' is 'The document format is not recognized (the content type is 'text/html; charset=UTF-8').'.

Metadata contains a reference that cannot be resolved: ''.

Content Type application/soap+xml; charset

ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend