within a web based application i have a dropdownlist. Whenever an index there is selected and an ok-button is pressed, the page-content below is supposed to change. I thought - ok, thats a good a example to try ajax in my web app. So I used the scriptmanager and embedded my user control in my aspx page in the updatepanel, contenttemplate etc.:
// simplified code
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdateReportPanel" runat="server">
// thats the controlID of the ok button
// my user control
<ti:ProjectStatus id="ctlPStatus" visible="false" runat="server"/>
So in the codebehind when a specific entry in the dropdownlist is selected I change the visibility of the usercontrol "ti:projectstatus" to true. I thought thats all I have to do to get the partial page rendering. But still the whole page reloads. What else do I have to do?