Databases
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    <p>There are two possibilities:</p> <ol> <li><p>Server side: subscribe for the <code>OnSelectedIndexChanged</code> event and enable AutoPostBack:</p> <pre><code>&lt;asp:CheckBoxList ID="CheckBoxList1" RepeatDirection="Horizontal" runat="server" AutoPostBack="true" OnSelectedIndexChanged="CheckBoxList1_SelectedIndexChanged"&gt; &lt;asp:ListItem Value="1"&gt;French&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="2"&gt;Spanish&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="3"&gt;Italian&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="4"&gt;German&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="5"&gt;Portuguese&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="6"&gt;Chinese&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="7"&gt;Japanese&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="8"&gt;Russian&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="Other"&gt;Other&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="None"&gt;None&lt;/asp:ListItem&gt; &lt;/asp:CheckBoxList&gt; </code></pre> <p>and in the code behind:</p> <pre><code>protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e) { var listItems = CheckBoxList1.Items.Cast&lt;ListItem&gt;(); var isNoneSelected = listItems.Any(x =&gt; x.Value == "None" &amp;&amp; x.Selected == true); if (isNoneSelected) { listItems.Where(x =&gt; x.Value != "None").ToList().ForEach(x =&gt; x.Selected = false); } } </code></pre></li> <li><p>Client side: use javascript to detect when the user clicks on the None checkbox and uncheck the others.</p></li> </ol>
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    1. POuncheck checkboxlist if one listitem selected
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    1. USDarin Dimitrov
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    1. COHi, many thanks. I have problems translating this into vb.net. Could you give some directions? Many thanks.
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      1. USnetNewbi3
    2. CO@netNewbi3, there are online C# -> VB.NET conversion tools: http://www.developerfusion.com/tools/convert/csharp-to-vb/ You may try it to convert the codebehind to VB.NET.
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    3. COThanks, I use those. however this time they didnt work. Thanks.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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