Hello there,

i need help: I have a simple WebService for test purposes called "WebService.asmx", and in the same folder a WebForm called "Test.aspx". What they look like:

WebService:

using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Script.Services;

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

 aspx File:   

<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Test.aspx.cs" Inherits="Test" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

<input style="position: absolute; left: 450px;" type="button" onclick="sayHelloWorld()" />  

    <asp:ScriptManager id="ScriptManager1" runat="server">
        <Services>
            <asp:ServiceReference Path="WebService.asmx" />
        </Services>
    </asp:ScriptManager>

    <script language="javascript" type="text/javascript">
    
    function sayHelloWorld()
    {            
        MatCodeWS.WebService.HelloWorld(Succeeded);
    }
    
    function Succeeded(result,eventargs)
    {
        alert(result);
    }    
    </script>
</asp:Content>

Clicking on the input button results in a big alert box containing HTML code. Title: "Server Method 'HelloWorld failed with the following error:'" Then there is a bunch of HTML Code and in between you can read phrases like "HTTP-Error 404 - Not found" etc.

 Anyone a hint ?

thanks a lot

No, does not change anything :(

<%@ WebService Language="C#" CodeBehind="~/App_Code/WebService.cs" Class="MatCodeWS.WebService" %>

Hi, 

To enable an .asmx Web service to be called from client script in an ASP.NET Web page, you first add a ScriptManager control to the page. You reference the Web service by adding an asp:ServiceReference child element to the ScriptManager control and setting its path attribute to point to the Web service. The ServiceReference object instructs ASP.NET 2.0 AJAX Extensions to generate a JavaScript proxy class for calling the specified Web service from client script.

The following example shows how to enable a Web service named SimpleWebService.asmx to be called from script in an ASP.NET Web page.

<asp:ScriptManager runat="server" ID="scriptManager">
  <Services>
    <asp:ServiceReference
       path="~/WebServices/SimpleWebService.asmx" />
  </Services>
</asp:ScriptManager>

The ServiceReference object can reference a Web service only in the same domain. The Web service path can be relative, application relative, domain relative, or absolute. For absolute paths, you must make sure that the path is in the same domain.

If you have further questions, let me know! 

Best Regards,

What if you are using a masterpage?

 I can do this in a normal page, but as soon as I try to use a master page this no longer works.