Web Forms :: AJAX Modal Popup Is Closing When Button Is Fired Inside Update Panel

 I am sending you the code. It Has two PArts First is CLIENT SECTION and Anpother is STATION Section

1) CLIENT SECTION : It has a dropdownlist binded to SQLDataSource and with this it has an imagebutton bAddClient

bAddClient will open the ModalPopup which will ask user to Add new client. And After Adding the New client when User

will close the ModalPopup MY DropDownList is not getting Populated with the New Client. I have Used UpdatePanels Also

2) STATION SECTION : It has a DropDownList, an Image BUtton , And Grid View. In Grid View it shows station details 

On particular client selcted above.

I have given the delete station command on deleting the station that particular entry doesnot goes away. 

It Should not be visible after it get deleted

Now when i click on imagebutton a modalpopup will open. 

Now In modalpopup i have given dropdownlist , image button(to add new station), Some station Info and save button

Now when i click on dropdownlist it used to close the modalpopup then i seet the autopostback = false. Then it works fine. Is it correct way?

Now when i click on imagebutton it asks user to add new station with a textbox , save station button. When users click on savestation button then it adds station to the DB and it should update the dropDownList of ModalPoup without closing it.

But when I am clicking on imagebutton it is closing the modalpoup.

And When user clicks on ModalPoup SSave Button in end it should update GridView of STATAION SECTION too.

<%--   ************** CLIENT SECTION START HERE*******************--%>
<p class="heading">CLIENTS</p>
<br />
<asp:ScriptManager ID="smClientMgmt" runat="server" />
<asp:UpdatePanel ID="upCMClientInfo" ChildrenAsTriggers = "true" UpdateMode="Conditional" runat ="server" >
<ContentTemplate>

[Code] ....