Autocomplete extender using jquery

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My source code as follows

JavaScript

<script type="text/javascript">
$(function () {
$("[id$=txtSearch]").autocomplete({
source: function (request, response) {
$.ajax({
url: '<%=ResolveUrl("~/Default.aspx/GetCustomers") %>',
data: "{ 'prefix': '" + request.term + "'}",
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
response($.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) {
$("[id$=hfCustomerId]").val(i.item.val);
},
minLength: 1
});
}); 


html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1"  runat="server">
</head>
<body

<form id="form1"  runat="server">
<asp:TextBox ID="txtSearch" runat="server" />
<asp:HiddenField ID="hfCustomerId" runat="server" />
<asp:Button ID="Button1" Text="Submit" runat="server" OnClick="Submit" />

</form>
</body>
</html>

Aspx code as follows

C#

public static string[] GetCustomers(string prefix)

{
    List<string> customers = new List<string>();
    using (SqlConnection conn = new SqlConnection())
    {

       // SqlConnection strconnection = new SqlConnection("Server=(local);Initial Catalog=Test;Trusted_Connection=true");

        SqlConnection strconnection = new SqlConnection("Data Source=GOD-PC;Initial Catalog=Test;Trusted_Connection=true");
 
       // conn.ConnectionString = ConfigurationManager.ConnectionStrings["Test"].ConnectionString;


        using (SqlCommand cmd = new SqlCommand())
        {
            cmd.CommandText = "select ContactName, CustomerId from customerss where ContactName like @SearchText + '%'";
            cmd.Parameters.AddWithValue("@SearchText", prefix);
            cmd.Connection = strconnection;
            conn.Open();
            using (SqlDataReader sdr = cmd.ExecuteReader())
            {
                while (sdr.Read())
                {
                    customers.Add(string.Format("{0}-{1}", sdr["ContactName"], sdr["CustomerId"]));
                }
            }
            conn.Close();
        }
    }
    return customers.ToArray();
}


    protected void Submit(object sender, EventArgs e)
    {
        string customerName = Request.Form[txtSearch.UniqueID];
        string customerId = Request.Form[hfCustomerId.UniqueID];
        ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Name: " + customerName + "\\nID: " + customerId + "');", true);

     
    }

In run mode as follows

Enter Search Name textbox (Submit button)

In textbox type the contacname and click the submit button. when i click the submit button the id will be displayed.

but when i click the submit button id is not displayed.

Please help me what is the problem in my above code.

What I have tried:

My source code as follows

JavaScript

<script type="text/javascript">
$(function () {
$("[id$=txtSearch]").autocomplete({
source: function (request, response) {
$.ajax({
url: '<%=ResolveUrl("~/Default.aspx/GetCustomers") %>',
data: "{ 'prefix': '" + request.term + "'}",
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
response($.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) {
$("[id$=hfCustomerId]").val(i.item.val);
},
minLength: 1
});
});

HTML

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1"  runat="server">
</head>
<body

<form id="form1"  runat="server">
<asp:TextBox ID="txtSearch" runat="server" />
<asp:HiddenField ID="hfCustomerId" runat="server" />
<asp:Button ID="Button1" Text="Submit" runat="server" OnClick="Submit" />

</form>
</body>
</html>

Aspx code as follows

C#

public static string[] GetCustomers(string prefix)

{
    List<string> customers = new List<string>();
    using (SqlConnection conn = new SqlConnection())
    {

       // SqlConnection strconnection = new SqlConnection("Server=(local);Initial Catalog=Test;Trusted_Connection=true");

        SqlConnection strconnection = new SqlConnection("Data Source=GOD-PC;Initial Catalog=Test;Trusted_Connection=true");
 
       // conn.ConnectionString = ConfigurationManager.ConnectionStrings["Test"].ConnectionString;


        using (SqlCommand cmd = new SqlCommand())
        {
            cmd.CommandText = "select ContactName, CustomerId from customerss where ContactName like @SearchText + '%'";
            cmd.Parameters.AddWithValue("@SearchText", prefix);
            cmd.Connection = strconnection;
            conn.Open();
            using (SqlDataReader sdr = cmd.ExecuteReader())
            {
                while (sdr.Read())
                {
                    customers.Add(string.Format("{0}-{1}", sdr["ContactName"], sdr["CustomerId"]));
                }
            }
            conn.Close();
        }
    }
    return customers.ToArray();
}


    protected void Submit(object sender, EventArgs e)
    {
        string customerName = Request.Form[txtSearch.UniqueID];
        string customerId = Request.Form[hfCustomerId.UniqueID];
        ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Name: " + customerName + "\\nID: " + customerId + "');", true);     
    }

In run mode as follows

Enter Search Name textbox (Submit button)

In textbox type the contacname and click the submit button. when i click the submit button the id will be displayed.

but when i click the submit button id is not displayed.

Please help me what is the problem in my above code.

Posted 6-Mar-16 2:16am

sudhakarthikeyan

Updated 7-Mar-16 16:23pm

Manas_Kumar

v3

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Comments

[no name] 6-Mar-16 9:32am

What is problem exactly you are getting?

Just check error by pressing F12 in browser and see any error in console tab.

1 solution

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Wonde Tadesse · Accepted Answer · 2016-03-07T16:23:00

Solution 1

See these samples.
1. JQuery ajax autocomplete extender textbox using json response type[^]
2. JQuery ajax autocomplete extender textbox using XML response type[^]

Posted 7-Mar-16 16:23pm

Wonde Tadesse