calling a public function of an asp.net ajax server control from client side

Question

I want to make a ajax server control in ASP.NET and in that application I have a textbox and I want to send text of that textbox to function that is created in ASP.NET ajax

Answer 1

1. Add a Script Manager to the page
2. Add a new web service file to the project
3. Add the attribute [ScriptService] to the service class
4. Create a method that accepts and returns a string ie:
5. Add the attribute [ScriptMethod] to the method
6. On the aspx page with the script manager, add a Service reference to the asmx file
7. Call the server side method in javascript qualifying it with the full namespace.

MyPage.aspx:

...
<asp:ScriptManager ID="ScriptManager1" runat="server">
    <Services>
        <asp:ServiceReference Path="~/MyService.asmx" />
    </Services>
</asp:ScriptManager>
...
<script>
    MyNameSpace.MyService.MyMethod('some text', responseHandlerMethod, errorHandlerMethod);
</script>
...

MyService.asmx

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Script.Services;

namespace MyNameSpace
{
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    [ScriptService]
    public class MyServiceClass: System.Web.Services.WebService
    {
        [ScriptMethod]
        [WebMethod]
        public string MyMethod(string SomeText)
        {
            return "Hi mom! " + SomeText;
        }
    }
}