asp.net button.Attributes.Add (script not working)...why?

[KathyB]

Hi, I have an asp:button id="btnList" in an asp.net page. In the page
load event (If NOT Postback), I have the following:

btnList.Attributes.Add("onclick", "<script
language='javascript'>window.open('Scanned.aspx', 'Serial Numbers',
'width=200 , height=300, toolbar=no');</script>")

I get no syntax errors, but when I run the page and click the button,
it simply posts back to itself. I made validate false, but don't see
any other

I know this is simple, but PLEASE tell me why???

Thanks, Kathy :-)

[NilaFridley]

Hi Kathy,

Reason why this is happening is because it is in your asp button's nature to post back onClick... so the client side event basically gets voided. If you want to get the same effect (pop-up, right?) create a label, make it look like a button, then add your script to that label's Attribute collection. Oh, and make sure to set that label's cursur style to 'Hand' so when your users mouseover that label, they get a "clickable" fedback.

I have to say, there are a few exceptions to this though. For example you can successfully add a Confirm or ModalWindow javascript to any control with a post-back oriented event handler... see this code for modal window reference:
loginButton.Attributes.Add("onclick", "window.showModalDialog('/MyWebsite/login.aspx', null, 'status:no; dialogWidth:360px; dialogHeight:229px; help:no; scroll:no; menubar:no; resizable:no')");

This is a code example for a pop-up, btw:
popLabel.Attributes.Add("onclick", "window.open('/myWebsite/emailMe.aspx', 'CustomPopUp','width=399, height=528, statusbar=no, menubar=no, resizable=no')");

I hope that helped ;)
-Nila