Mangled id attributes

[Roshawn Dawson]

Hi,

I've noticed that templated controls (DataList and Repeater in
particular) mangle the id attributes of the server controls that are
housed in the ItemTemplate & AtlernatingItemTemplates. I was wondering
if there's a way to "demangle" the id attributes of the server controls
contained in these templates via Javascript.

Thx,
Roshawn

 

[Brock Allen]

No, but you can get the correct ID via Control.ClientID. This is the ID to
use in your javascript.

<script language=javascript>
function SayHello()
{
var ctrl = document.getElemntById('<%= _tb.ClientID %>');
alert(ctrl.value);
}
</script>

<asp:TextBox runat=server id=_tb ... />

 

[HoustonFreeways]

For datagrids, I've found that it is best to refer to the position of the
control in the cell. For example, if you have a textbox, placeholder, and
htmlinputhidden in a cell you can access the placeholder at ItemDataBound
with

ph = CType(e.Item.Cells(1).Controls(1), PlaceHolder)


On the postback you can loop through the datagrid and get elements like this

For Each dgi As DataGridItem In dg_questions.Items

Dim controlType As String =
dgi.Cells(1).Controls(1).Controls(0).GetType.Name

..
..