ASP.NET web service and page method

For the moment, I have a page method that I call with javascript/jQuery and the server returns a json object. I'm realizing that I'd actually like to have this page method on every page. Of course, I could copy paste the page method on every page but I'm looking开发者_C百科 into better options.

1. Putting the page method in the master page. Is this easy to do?

2. Creating a web service. My question is this: for now, the page knows which client is requesting the method through the sessionID; does a web service also know who's calling it? In term of performance, are they comparable?

Let me know you have any suggestions and what I should watch out for.

Thanks.

If you want that functionality on every page , that means there is a common functionality you need on every page right.

In your webservice you can expose multiple bindings , once for javascript/jquery which can be json object and again you can use the same for your html aslo.

Add the reference as service reference or webreference in your project. Once it is added it will be availble on every page and you can use the method on all the pages you want.

Let me know you need more details on this.

try something like this

[WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
    public List<Object> GetData(int pageSize)
    {

    }

$.ajax({
    type: "POST",
    url: "test.asmx/yourmethodname",
    data: "{'somevalue':'14'}",
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function(msg) {
      // response...here
    },
    error: function(msg) {
// error here
    }
});

You can do the object oriented thing and create a base page that all of your other pages inherit from. Something like:

     public partial class BasePage : System.Web.UI.Page
        {

            [System.Web.Services.WebMethod]
            public static string MyCallbackMethod(string someVar)
            {
                ...
            }   
         }

And then the BasePage would be used by the other pages:

public partial class Default : BasePage 
        {
                ...