How to handle display of a button from a user control in another user control's Update Panel?

I'm using VB.NET for my application. I have an update panel in an user control which uses another 2 user controls
   <asp:UpdatePanel ID="UpdatePanelID" runat="server">
                <uc1:UserfirstControl ID="UserfirstControl1" runat="server" />
                <br />
                <uc2:UserSecondControl ID="UserSecondControl2"
                    runat="server" />

My UserfirstControl has 2 buttons (button1 & button2) and I'm looking to hide one button (button2) in the code behind file(UpdatePanel's Usercontrol Code Behind) based on some condition. Can I able to hide/invisible that button?

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you need to use FindControl method with parent.
So from one usercontrol you need to find parent and again find second user control.

After this there are two ways to handle display of button.
1) create property for setting visibility of button and set value to this property.

2) after finding second user control, again find button inside that and set visibility of that button.

Hope this helps you.

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Easwaran ParamasivamCommented:
Yes. It is possible. You should wrap your usercontrol with Panel to do so.

<asp:UpdatePanel runat="server" ID="UpdatePanelID" ChildrenAsTriggers="true" UpdateMode="Conditional">
        <asp:Panel runat="server" ID="pan1" Visible="false"> 
             <uc1:UserfirstControl ID="UserfirstControl1" runat="server" />

        <asp:Panel runat="server" ID="pan2" Visible="false">
         <uc2:UserSecondControl ID="UserSecondControl2" runat="server" />


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In code behind just use below code based on your condition:

 pan2.Visible = false;

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