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jQuery Bootstrap Autocomplete Textbox from Database Example in Asp.net using C#, VB.NET

Nov 17, 2015
Introduction

Here I will explain how to use
jQuery to implement bootstrap autocomplete textbox from database example in asp.net using c#, vb.net or jQuery bootstrap autocomplete textbox example in asp.net using c#, vb.net.


Before implement this example first design one table userdetails in your database like as shown below

Column Name
Data Type
Allow Nulls
Userid
Int(IDENTITY=TRUE)
No
Username
varchar(50)
Yes
Education
varchar(50)
Yes
Location
varchar(50)
Yes
Once we design table in our database insert some dummy data in your table to use it in our application that would be like as shown below

Sample User Details table for bootstrap autocomplete textbox example in asp.net
Now open your aspx page and write the code like as shown below


<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Bootstrap Autocomplete Textbox Example without using Typehead.js</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<link rel = "Stylesheet" href = "https://twitter.github.io/typeahead.js/css/examples.css"></link>
<script type="text/javascript">
$(function () {
$('#txtSearch').keyup(function () {
$.ajax({
url: "BootstrapAutoComplete.aspx/GetAutoCompleteData",
data: "{'username':'" + $('#txtSearch').val() + "'}",
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
var val = '<ul id="userlist">';
$.map(data.d, function (item) {
var itemval = item.split('/')[0];
val += '<li class=tt-suggestion>' + itemval + '</li>'
})
val += '</ul>'
$('#divautocomplete').show();
$('#divautocomplete').html(val);
$('#userlist li').click(function () {
$('#txtSearch').val($(this).text());
$('#divautocomplete').hide();
})
},
error: function (response) {
alert(response.responseText);
}
});
})
$(document).mouseup(function (e) {
var closediv = $("#divautocomplete");
if (closediv.has(e.target).length == 0) {
closediv.hide();
}
});
});
</script>
<style type="text/css">
ul li
{
list-style: none;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div style="position: absolute;left: 18%; z-index: 100; text-align:left;">
<input type="text" class="typeahead" id="txtSearch" placeholder="Type username to search" autocomplete="off" />
<div id="divautocomplete" class="tt-menu" style="display:none">
</div>
</div>
</form>
</body>
</html>

Now add following namespaces in code behind

C# Code


using System;
using System.Collections.Generic;
using System.Web.Services;
using System.Data.SqlClient;

After completion of adding namespaces you need to write the code like as shown below


[WebMethod]
public static List<string> GetAutoCompleteData(string username)
{
List<string> result = new List<string>();
using (SqlConnection con = new SqlConnection("Data Source=Suresh;Integrated Security=true;Initial Catalog=MySampleDB"))
{
using (SqlCommand cmd = new SqlCommand("select UserId,UserName from userdetails where UserName LIKE '%'+@SearchText+'%'", con))
{
con.Open();
cmd.Parameters.AddWithValue("@SearchText", username);
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
result.Add(string.Format("{0}/{1}", dr["UserName"], dr["UserId"]));
}
return result;
}
}
}

VB.NET Code


Imports System.Collections.Generic
Imports System.Web.Services
Imports System.Data.SqlClient
Partial Class VBCode
Inherits System.Web.UI.Page
Protected Sub Page_Load(sender As Object, e As EventArgs)
End Sub
<WebMethod()> _
Public Shared Function GetAutoCompleteData(ByVal username As String) As List(Of String)
Dim result As New List(Of String)()
Using con As New SqlConnection("Data Source=Suresh;Integrated Security=true;Initial Catalog=MySampleDB")
Using cmd As New SqlCommand("select UserId,UserName from userdetails where UserName LIKE '%'+@SearchText+'%'", con)
con.Open()
cmd.Parameters.AddWithValue("@SearchText", username)
Dim dr As SqlDataReader = cmd.ExecuteReader()
While dr.Read()
result.Add(String.Format("{0}/{1}", dr("UserName"), dr("UserId")))
End While
Return result
End Using
End Using
End Function
End Class

Demo

Check following demo for bootstrap autocomplete textbox example

Bootstrap autocomplete textbox example in asp.net using c#, vb.net
Download Sample Code Attached



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3 comments :

Sachin Godase said...

Nice post really help me

Anonymous said...

Hello is it possible to implement autocomplete for multiple controls on same page.

Anonymous said...

Hi Suresh Nice Blog

Give your Valuable Comments

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