Call codebehind function from ASPX

collie · August 23rd, 2004, 08:18 AM

Hi,

I have a function written in vb.net (web application) that I need to call once the user clicks on the html image (I can't use a web control).
However, I get a javascript error 'Object not defined' when I click the image.
What am I doing wrong?
Please note that although I know a web server control would be much easier I can't use such a control on this page and therefore need a solution with a html control.
Thanks

HEADER.ASCX.VB:

<body bgColor="white">

<table cellSpacing="2" cellPadding="0" bgColor="white" border="0">

<tr>

<td><IMG id="IMG1" src="site/empty_b.jpg" border="0" runat="server" onclick="ExitBtn()"></td>

</tr>

</table>

HEADER.VB:

Public Function ExitBtn()

        Request.Cookies("IBuySpy_FullName").Value = ""

        Response.Cookies("IBuySpy_FullName").Expires = DateTime.Now.AddDays(-1)

        IMG1.Visible = False

        Response.Redirect("default.aspx")

    End Function

jaucourt · September 2nd, 2004, 03:31 AM

As I understand it, you are trying to call a vb function via javascript. Your code will never work, because the page would have to be posted back to the server (where your function resides) before your function could be called. Your function is not embedded in the page, where the browser could 'get at' it. If you want this to work, you'll either have to write the function in javascript (which I think, looking at what you're doing, is pretty simple) or post back to the server.

If you need help writing the function, best to post something in a javascript forum - I'd help but my javascript isn't fantastic and it would take me a while where an experienced javascripter could sort it in moments.