Koristim ovaj kod za otvaranje popup prozora. Problem je što se prozor otvara samo jednom.
U čemu je stvar? :
<asp:Panel ID="usersRole" runat="server" CssClass="modalPopup" style = "display:none" Width ="700px" Height ="600px">
<asp:UpdatePanel ID="upRole" runat ="server">
<ContentTemplate>
<asp:DropDownList ID="ddlUsers" runat="server"></asp:DropDownList>
<br /><br />
<asp:Button ID="btnSpremi" runat="server" CssClass ="button" Text="SPREMI" OnClick = "Spremi"/>
<asp:Button ID="Button3" runat="server" CssClass ="button" Text="ODUSTANI" OnClientClick = "return Hidepopup()"/>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID = "btnSpremi" />
</Triggers>
</asp:UpdatePanel>
</asp:Panel>
<asp:LinkButton id="lnkFake" runat="server" />
<ajax:ModalPopupExtender ID="popupUsersRole" runat="server" DropShadow="false" PopupControlID="usersRole"
TargetControlID ="lnkFake" BackgroundCssClass="modalBackground">
</ajax:ModalPopupExtender>