Run method on server without Refreshing

Question

Hello,

I know how to use UpdatePanels and so on but I would like to know if its possible to run method on the server (after clicking a button) which doesnt change anything in controls on the site but for example updates database.

I know that I can use WebService but is there any way to use simple code behind methods ?

thanks for help

Answer 1

Yes you could call a C# function to update the database from say, javascript for example

Heres a link that explains how:

http://geekswithblogs.net/frankw/archive/2008/03/13/asp.net-ajax-callbacks-to-web-methods-in-aspx-pages.aspx

Answer 2

u have writen all ways to do it. There no any way to do it. 1. UpdatePanel (AjaxControl) 2.with javascript(or jQuery. Best to use JQuery) call WebService

Answer 3

It's not possible without javascript or ajax because every method which gets hosted in a webenvironment gets only called if the request goes to the server which means postback.

Answer 4

Hi,

Since UpdatePanels and other useful AJAX controls appeared, we, developers, forgot a little bit "How" something is working on the back. I recommend you to use a Script callback, there are plenty of examples on Internet like this: http://msdn.microsoft.com/en-us/magazine/cc163941.aspx

With this you can update database on the server function, and do nothing(return false;) when it succeeds on client success event handling function. Hope that helps,

Answer 5

I would recommend jQuery Ajax including the .ajaxStart() .ajaxStop() to do stuff like display a panel until/while the ajax event is active.

see here for more information: http://api.jquery.com/category/ajax/

EDIT: some complete sample code:

$(document).ready(function()
{
    /***************************************/
    function testLoadTime(jdata)
    {
        $("#timeResult").text(jdata);
    };
    $.ajax({
        type: "POST",
        contentType: "application/json; charset=utf-8",
        data: "{}",
        dataFilter: function(data)//makes it work with 2.0 or 3.5 .net
       {
            var msg;
            if (typeof (JSON) !== 'undefined' &&
            typeof (JSON.parse) === 'function')
                msg = JSON.parse(data);
            else
                msg = eval('(' + data + ')');
            if (msg.hasOwnProperty('d'))
                return msg.d;
            else
                return msg;
        },
        url: "MyProcedure.asmx/GetServerTimeString",
        success: function(msg)
        {
            testLoadTime(msg);
        }
    });

});

server side:

  [WebMethod]
    public static string GetServerTimeString()
    {
        return "Current Server Time: " + DateTime.Now.ToString();
    }