Drop Down List (in Update Panel) causing FULL PostBack!

asp.net ajax ajaxcontroltoolkit
user259119 picture user259119 · Jan 26, 2010 · Viewed 45.2k times · Source

I have a problem with my AJAX and ASP.NET 3.5 :( Problem is really weird, as I'm using the same thing on different page and it works fine in there, but on this specific page, this is not working.

Here's what I have:

    <asp:UpdatePanel ID="upMain" runat="server" UpdateMode="Conditional" Visible="true" RenderMode="Inline">
                <ContentTemplate>
<asp:DropDownList ID="ddlNewService_PortTelco" runat="server" Width="250" CssClass="dropdown" AutoPostBack="true" OnSelectedIndexChanged="Provision_PortedTelcoChanged"></asp:DropDownList>
</ContentTemplate>
</asp:UpdatePanel>

On the way before the DropDown there is one DIV (html one), and then few asp:Panels. I do not understand why this is causing a FULL POST BACK ?!

Any ideas ? Thanks

Answer

robert picture robert · Feb 3, 2012

i had the same problem... altho it's not showing in the copied code here, check to make sure you don't have any controls with ClientIDMode=Static within the updatepanel .... make them inherit

at least any controls that may trigger a postback

Related questions

Positioning AJAX ModalPopupExtender in the center of the screen problem

I have problem with positioning ModalPopupExtender in the center of the screen when it's PopupDragHandleControlID property is set (without this property it works fine ). ModalPopupExtender is not positioned in the center of the screen. I thinks what causes the problem …

Read More
AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts Error

I'm experiencing a AjaxToolkit Calendar display error in production only. Locally when debugging, this problem does not exist and the calendar datepicker works perfectly. All of the other posts revolve around this Toolkit not working at all. I'm concerned with …

Read More
The type or namespace name 'ToolkitScriptManager' does not exist in the namespace 'System.Web.UI.WebControls'

I am getting the following errors The type or namespace name 'ToolkitScriptManager' does not exist in the namespace 'System.Web.UI.WebControls' (are you missing an assembly reference?) The type or namespace name 'ModalPopupExtender' does not exist in the namespace …

Read More