lsit boxes

[Stunner01225]

Just a quick and simple question, but I cannot find the answer.
I have an empty list box web control on an aspx page. I use javascript on the client side to add items to it but when I post back to the server I cannot see them and items .count is returning 0 .
What am I doing wrong?

Cheers for any help.

 

[checkai]

i've seen this as well...the listbox has a datasource property that is server side...so as far as your listbox knows, there is nothing in it...

is there a reason to populate it client side? I'm not sure if there is a way to post it to the datasource of the listbox.

"...we both know I'm training to become a cagefighter...see what happens if you try 'n hit me..."

 

[ca8msm]

What javascript code are you using to add the items?

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[Stunner01225]

a custom function
function addItem(varNo , varText)
{
var myBox = document.getElementById("lbCom");
var newOp = new Option(varText,varNo);
myBox.add(newOp, myBox.length);
}

The javascript adds them to the box , or at least it shows them.

The reason im working like this is because im using a tree check list web control, and I thought this would be a quicker way to find the checked nodes.

 

[ca8msm]

OK - I've done something similar n the past but it's not elegant!

From what I remember I:

1) Created a hidden textbox that is populated with a comma seperated string of the items in the listbox. This is populated from a javascript function when the user clicks the submit button.

2) Got the contents of that hidden textbox from the Request.Form object and repopulated it server side

As I said it's not very elegant but as those items are added client side, they don't actually exist as far as the server control is concerned.

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[Stunner01225]

Thanks ca8msm , I was coming to the same conclusion my self.
I thought when I started this code that it was too easy.

Thanks for all your help.