creating and running code from aspx.cs

Question

I'm trying to execute the follow code below, from Run db query (sql server 2005) with ajax. Is it possible?.

<Head>
    <script type="text/javascript">
    function runAjax() {
        $.ajax({
            type: "POST",
            url: "Index.aspx/PerformDatabaseQuery",
            data: "{}",
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function (result) {
                alert("Test");
            }
    });
}
</script>
</Head>

I then have a button in the body which calls the function

<button type="button" onclick="runAjax();"/>

The code above resides in Home.cshtml

I'm not entirely sure if I created Index.aspx.cs correct, I clicked on a folder, add new class and simply named the file Index.aspx.cs. I put breakpoints in Index.aspx.cs and it's never hit. The callback function alert("Test") never triggers as well.

If I replace runAjax(); to execute

<script type="text/javascript">   
function functionTwo() { alert('You clicked the bottom text'); }
</script>

The alert will display. May I ask where am I going wrong with this ajax call

Hi @Izzy I'm fairly new to web development, may I ask how would I check? — Master
– Master, Commented Nov 27, 2015 at 16:42
Press the F12 key. Depending on the browser you'll either have a window popup or docked and in the there you'll have a tab which will say Console click on it and refresh your page — Izzy
– Izzy, Commented Nov 27, 2015 at 16:43
Is it ASP.NET MVC? Or ASP.NET? If the former, there is no concept of web methods, if the latter, there should be no cshtml source files afaik. Also you button may trigger a page reload — Andrei
– Andrei, Commented Nov 27, 2015 at 16:44
@stuartd, then how could Home.cshtml be? Is it some latest update that allows one to use razor in asp.net? — Andrei
– Andrei, Commented Nov 27, 2015 at 16:47

Code Ranger · Accepted Answer · 2015-11-27 17:04:40Z

0

I'd recommend that you handle the error function in the ajax call, just to see if there is anything useful being returned by the ajax call (error: function(xhr, message, exception){ //do something}. A couple of things I note as well: If you are not passing data then don't include the data option, if this is not on a dev machine on local host in the root then the call will fail as the address 'Index.aspx...' needs to be fully qualified.

answered Nov 27, 2015 at 17:04

Code Ranger

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