Displaying a pop-up warning message on click checkbox in asp.net
<p>I have an asp webpage. One of the elements in that asp page is an asp:repeater element as below:</p>

<pre><code>&lt;asp:repeater ID = repeater1 runat="Server" onitemdatabound="Repeater_ItemdataBound"&gt;
&lt;ItemTemplate&gt;
 &lt;div class="row1"&gt;
 &lt;span class="features"&gt;
 &lt;asp:checkbox id="cb1" runat="server" /&gt;
 &lt;asp:textbox id="tb1" runat="server" Text='&lt;%# DataBinder.Eval(Container.DataItem, "Text") %&gt; /&gt;
 &lt;/div&gt;
&lt;/ItemTemplate&gt;
</code></pre>

<p></p>

<p>When the user clicks on the "checkbox", a warning message should pop-up asking whether user really wants to select. The contents on the warning message, come from the data that is bound to the repeater. DataItem has a property "WarningText". The pop-up should appear only in certain cases when the warning message is not null.</p>

<p>I have very little experience with asp. I am not sure what should I be even looking for, if i had to find some online resources for this problem. I think I would have to use some client side scripting like javascript for this, but i do not know anything else. I would appreciate if someone can point me in right direction.</p>
