TextChanged cannot be fired, but I managed to fire Button click event where I have fetched Text as well as value
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"
type = "text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"
type = "text/javascript"></script>
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css"
rel = "Stylesheet" type="text/css" />
<script type="text/javascript">
$(document).ready(function () {
$("#<%=txtSearch.ClientID %>").autocomplete({
source: function (request, response) {
$.ajax({
url: '<%=ResolveUrl("~/Service.asmx/GetCustomers") %>',
data: "{ 'prefix': '" + request.term + "'}",
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
response($.map(data.d, function (item) {
return {
label: item.split('-')[0],
val: item.split('-')[1]
}
}))
},
error: function (response) {
alert(response.responseText);
},
failure: function (response) {
alert(response.responseText);
}
});
},
select: function (e, i) {
$("#<%=hfCustomerId.ClientID %>").val(i.item.val);
$("#<%=hfCustomerName.ClientID %>").val(i.item.value);
$("[id*=btnSubmit]").click();
},
minLength: 1
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:TextBox ID="txtSearch" runat="server"></asp:TextBox>
<asp:HiddenField ID="hfCustomerName" runat="server" />
<asp:HiddenField ID="hfCustomerId" runat="server" />
<br />
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick = "Submit" />
</form>
</body>
</html>
protected void Submit(object sender, EventArgs e)
{
string customerName = Request.Form[hfCustomerName.UniqueID];
string customerId = Request.Form[hfCustomerId.UniqueID];
string message = "Customer Name: " + customerName + " Customer Id: " + customerId;
ClientScript.RegisterStartupScript(GetType(), "alert", "alert('" + message + "');", true);
}