Introduction: In this article I am going to share How to
implement searching or filtering functionality in checkboxlist using jQuery
i.e. making asp.net checkboxlist items searchable. Moreover it will also count
total matched items as per search text.
In previous articles i explained How to Validate checkboxlist using jquery and Jquery to check uncheck all items in checkboxlist on click of select all checkbox and Jquery to move items from one listbox to another in asp.net and Move items from one checkboxlist to other in asp.net and Get checkboxlist selected items in comma separated format in asp.net
Description: While
working on asp.net project it was required to show all employees in checkboxlist
so that multiple employees can be selected at a time. But there were more than
500 employees. Selecting some of the
employees from the checkboxlist was very difficult. So I decided to add search
functionality to checkboxlist so that I can easily search and select the
employees as shown in demo image above.
Implementation: Let’s create a sample page for demonstration
purpose.
HTML Source
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script type="text/javascript">
function SearchEmployees(txtSearch, cblEmployees) {
if ($(txtSearch).val() != "") {
var count = 0;
$(cblEmployees).children('tbody').children('tr').each(function () {
var match = false;
$(this).children('td').children('label').each(function () {
if ($(this).text().toUpperCase().indexOf($(txtSearch).val().toUpperCase())
> -1)
match = true;
});
if (match) {
$(this).show();
count++;
}
else { $(this).hide(); }
});
$('#spnCount').html((count) + ' match');
}
else {
$(cblEmployees).children('tbody').children('tr').each(function () {
$(this).show();
});
$('#spnCount').html('');
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<fieldset style="width: 240px">
<legend>Searchable CheckboxList Example</legend>
<asp:TextBox ID="txtSearch" runat="server" onkeyup="SearchEmployees(this,'#cblEmployees');"
placeholder="Search
employee">
</asp:TextBox>
<span id="spnCount"></span>
<div style="height: 200px; overflow-y: auto; overflow-x: hidden">
<asp:CheckBoxList ID="cblEmployees" runat="server" RepeatColumns="1"
RepeatDirection="Vertical" Width="240px" ClientIDMode="Static">
<asp:ListItem Text="Sahil" Value="1"></asp:ListItem>
<asp:ListItem Text="Kabeer" Value="2"></asp:ListItem>
<asp:ListItem Text="Arjun" Value="3"></asp:ListItem>
<asp:ListItem Text="Aryan" Value="4"></asp:ListItem>
<asp:ListItem Text="Ranbeer" Value="5"></asp:ListItem>
<asp:ListItem Text="Armaan" Value="6"></asp:ListItem>
<asp:ListItem Text="Salmaan" Value="7"></asp:ListItem>
<asp:ListItem Text="Amit" Value="8"></asp:ListItem>
<asp:ListItem Text="Virat" Value="9"></asp:ListItem>
<asp:ListItem Text="Anand" Value="10"></asp:ListItem>
</asp:CheckBoxList>
</div>
</fieldset>
</div>
</form>
</body>
</html>
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