Trigger problem

Hello, I have an custom control with an event, Something like this

Partial

Class CustomControl_SearchInherits System.Web.UI.UserControl

End Class

Therein i have declared an event:

PublicEvent SelectedIndexChanged(ByVal senderAsObject,ByVal eAs System.EventArgs)

and in the html i have created an Listbox

<ASP:ListboxSelectionMode="Multiple"ID="_Listbox"runat="server"AutoPostBack="true"Height="100%"Width="400px"/>

then on the event Listbox.selectedIndexChanged i raise the event SelectedIndexChanged.

ProtectedSub Listbox_SelectedIndexChanged(ByVal senderAsObject,ByVal eAs System.EventArgs)Handles _Listbox.SelectedIndexChanged RaiseEvent SelectedIndexChanged(sender, e)EndSubNow when i try to hook up a selectedIndex event (from my custom control) on the TRIGGER property from the update panel, it wont work, Why not?, It doesnt even apear in the event property's of my custom control

Could you specify the control composition?

I mean , whether the update panel holds an instance of your CustomControl_Search, or the ListBox itself.

If it is the first case, it is quite natural that the update panel cannot be triggered by the SelectedIndex event of the list box.

Probably you could paste some more code here ?

Yani

Ok. Here is some more code:

This is the definition of the custom control

<%@.ControlLanguage="VB"AutoEventWireup="false"CodeFile="Search.ascx.vb"Inherits="CustomControl_Search"%>

<tablewidth="100%"height="100%"cellspacing="0"cellpadding="0"border="0"id="TableNav">

<trheight="12px">

<tdrowspan="4"style="width: 400px"class="IL">

<ASP:ListboxSelectionMode="Multiple"ID="_Listbox"runat="server"

Height="100%"Width="400px"/></td>

</tr>

</table>

ProtectedSub Listbox_SelectedIndexChanged(ByVal senderAsObject,ByVal eAs System.EventArgs)Handles _Listbox.SelectedIndexChanged

RaiseEvent SelectedIndexChanged(sender, e)

EndSub

PartialClass CustomControl_Search

Inherits System.Web.UI.UserControl

' declare events

PublicEvent SelectedIndexChanged(ByVal senderAsObject,ByVal eAs system.EventArgs)

PublicEvent Find_Clicked()

' handle event (in customcontrol)

ProtectedSub Listbox_SelectedIndexChanged(ByVal senderAsObject,ByVal eAs System.EventArgs)Handles _Listbox.SelectedIndexChanged

RaiseEvent SelectedIndexChanged(sender, e)

EndSub

EndClass

Then I use this custom contol in an aspx page, with 4 update panels, witch have a trigger on the SelectedIndexChanged event raised by Searchpnl

<tdcolspan="3"><uc4:SearchID="Searchpnl"runat="server/></td>

<cc1:UpdatePanelID="UpdatePanel1"runat="server"RenderMode="Inline">

<ContentTemplate>

-- Content --

</ContentTemplate>

<Triggers><cc1:ControlEventTriggerControlID="Searchpnl"EventName="SelectedIndexChanged"/></Triggers>

</cc1:UpdatePanel>

But I the whole page is updated, and I won't only the update panel to be updated. (that's where its for).

I can't see the SelectedIndexChanged event in the property's. I can't see it in the task pane from the updatepanel either.

Thanks in advance

If you want to get only the update panel updated, you need to put your search control into the update panel.

Other wise it wouldn't know whether to make a regular page post back or an ajax one.

If it does not work try registering your search control in the script manager

ScriptManager1.RegisterAsyncPostBackControl(Searchpnl);

Cheers,

Yani

While we work closely with the ASP.NET AJAX team when developing the Toolkit, they're the real experts on general ASP.NET AJAX issues. Your problem doesn't seem to be directly related to the Toolkit, so we'd appreciate if you considered posting to one of theother newsgroups such asAJAX Discussion and Suggestions. Your post will be more helpful to others looking for similar advice if it's in the right place. Thank you!

hi,

how can an activex control　trigger an event of the parent form's control?

for example, I have an activex control which is a button that when clicked, it will output the content of a textbox.

Public Function setText(txt As String)
msg = txt
End Function

Private Sub Button_login_Click()
MsgBox msg

End Sub

After the msgbox is displayed, I want to clear the text in the textbox located in the parent form.

Any idea?

thanks!

Sheila