Call function from class in c# using jquery ajax

Question

I have been able to call the function using ajax using following code

function AjaxCall() {
    $.ajax(
    {
        type: 'POST',
        contentType: "application/json; charset=utf-8",
        url: 'Default.aspx/Server_HelloWorld',
        datatype: 'json',
        success: function (result) { alert(result.d); }
    })

}

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

aspx.cs Ajax Webmethod,

[WebMethod]
public String Server_HelloWorld()
{
    return "Hello, How are you?";
}

But if i don't have any .aspx page, i have only .html page with a class say myfunclass.cs . How do i call the same function from here. I have tried but fail

 $.ajax(
    {
        type: 'POST',
        contentType: "application/json; charset=utf-8",
        url: 'myfunclass.cs/Server_HelloWorld',
        datatype: 'json',
        success: function (result) { alert(result.d); }
    })

Answer 1

You cant just call *.cs file. You need to create some backend, like ASP.NET MVC Web API like in example here