Validate Checkboxlist using Jquery in asp.net

Introduction: In this article I have explain how we can validate the CheckBoxlist using Jquery in asp.net.

Description:

In the last article I have explained Add Meta Tag Code behind in asp.net, Encrypt and Decrypt Query String in asp.net, Create multiple Language website in Asp.net, Auto refresh data in Gridview without loading page whole page in asp.net and Send Password Reset Link in Asp.net.

Add a webform to project. Drag and drop the CheckBoxlist and button controls from Toolbox. Desgin the .aspx as shown below:

<table align="center"><tr><td>Known Language:</td><td>

        <asp:CheckBoxList ID="chklanguage" runat="server"

            RepeatDirection="Horizontal">

        <asp:ListItem Text="English" Value="0"></asp:ListItem>

        <asp:ListItem Text="Hindi" Value="1"></asp:ListItem>

        <asp:ListItem>Punjabi</asp:ListItem>

        <asp:ListItem>German</asp:ListItem>

    </asp:CheckBoxList></td></tr>

                        <tr>&nbsp;</tr>

                    <tr><td>&nbsp;</td><td>

                        <asp:Button ID="btnsubmit" runat="server" Text="Submit"/></td></tr>

    </table>

Keep the below given Jquery in between Head Tag (Select minimum Two Language):

   <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js">

</script>

<script type="text/javascript" language="javascript">

            $(document).ready(function () {

                $('#btnsubmit').click(function () {

                    //validate only for one value

                    //if ($('#chklanguage input:checked').length > 0)

                    if ($('#chklanguage input:checked').length > 1) {

                        return true;

                    }

                    else {

                        alert('Select atleast two Language')

                        return false;

                    }

                })

            });

</script>

Run the project and check the result.

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