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CheckBoxList Server Side Validation

Posted on 2013-01-14
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Last Modified: 2013-01-22
Hello Experts,

I have a CheckBoxList control that retrieves data from my DB (works fine). But I need to make sure a user selects at least one value from the CheckBoxList before he/she can submit the form. If he/she does not select at least one value then I want to display a message saying "Please select at least one value".

Thanks in advance!!!
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Question by:asp_net2
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Expert Comment

by:informaniac
ID: 38775353
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by:asp_net2
ID: 38775512
I already have a Javascript/jQuery solution. I need a Server Side solution. Thank  you for your help though.
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masterpass earned 1000 total points
ID: 38776138
you can use a customvalidator and then check onservervalidate event. Below is an example

http://briancaos.wordpress.com/2012/08/16/validate-aspcheckboxlist-with-aspcustomvalidator/

hope this helps.
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Assisted Solution

by:informaniac
informaniac earned 1000 total points
ID: 38779195
Is it something like this you are looking for?
bool itemSelected = false;
            foreach (ListItem item in chk1.Items)
            {
                if (item.Selected)
                {
                    itemSelected = true;
                    break;
                }
            }
            if (!itemSelected)
            {
                // Write code for alert message here
            }

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