c# - Have a panel become visible when selecting a value in a listbox -


i have gridview of inside table. wanted create filter allow users narrow down gridview. have 2 listbox. list box 1 holds filters, can move filter want 2nd listbox. when apply filters applies filters in 2nd listbox. when select 1 of filters in right want display filter properties fill out use in query pulling gridview.

is there way have panel show when select value in 2nd filter? guess im not sure if there function allow me this?

here how trying http://i.imgur.com/newyfty.jpg

thanks suggestions.

make panel invisible on initialization:

<asp:panel id="panel1" runat="server" visible="false">

then make visible in event handler autopostback filter selection:

panel1.visible = true;

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