Checking if CheckBoxList has any selected values

asp.net checkboxlist
Viredae picture Viredae · Aug 15, 2010 · Viewed 15.4k times · Source

I would like to know the fastest/easiest way to check if a CheckBoxList control has any checked items or not, I'm talking about an entire checkbox list as a whole, not a single checkbox.

Answer

Eyeball picture Eyeball · Aug 1, 2011

The Linq extension method is neat, but you can also just check the SelectedIndex:

bool isAnySelected = CheckBoxList1.SelectedIndex != -1;

If nothing is checked, the SelectedIndex is -1.

Related questions

How to get values of selected items in CheckBoxList with foreach in ASP.NET C#?

I have a CheckBoxList like this: <asp:CheckBoxList ID="CBLGold" runat="server" CssClass="cbl"> <asp:ListItem Value="TGJU"> TG </asp:ListItem> <asp:ListItem Value="GOLDOZ"> Gold </asp:ListItem> <asp:…

Read More
How to validate a user chose at least one checkbox in a CheckBoxList?

I've got a CheckBoxList control that I want to require the user to check at least ONE box, it does not matter if they check every single one, or 3, or even just one. In the spirit of asp.net's validation …

Read More
ASP.NET, VB: checking which items of a CheckBoxList are selected

I know this is an extremely basic question, but I couldn't find how to do this in VB... I have a CheckBoxList where one of the options includes a textbox to fill in your own value. So I need to …

Read More