Hi ishi12.shah,
Check this example. Now please take its reference and correct your code.
Database
For this example I have used of Northwind database that you can download using the link given below.
Download Northwind Database
HTML
<asp:GridView runat="server" ID="gvCustomers" AutoGenerateColumns="false" Width="250"
ShowFooter="true" ShowHeaderWhenEmpty="true" ShowHeader="true" CssClass="table table-responsive">
<Columns>
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<asp:TextBox ID="txtName" CssClass="form-control name" runat="server" Text='<%# Eval("ContactName") %>' Width="200px"></asp:TextBox>
<asp:HiddenField ID="hfId" runat="server" Value='<%# Eval("CustomerID") %>' />
<asp:Button ID="btnGet" Text="Get" runat="server" CssClass="btn btn-default" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<link rel="stylesheet" href='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.3/css/bootstrap.min.css'
media="screen" />
<script type="text/javascript" src='https://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.3.min.js'></script>
<script type="text/javascript" src='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.3/js/bootstrap.min.js'></script>
<script type="text/javascript" src="https://cdn.rawgit.com/bassjobsen/Bootstrap-3-Typeahead/master/bootstrap3-typeahead.min.js"></script>
<link rel="Stylesheet" href="https://twitter.github.io/typeahead.js/css/examples.css" />
<script type="text/javascript">
$(function () {
$.ajax({
type: "POST",
url: "Default.aspx/GetCustomers",
data: '{}',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: OnSuccess,
failure: function (response) {
alert(response.d);
},
error: function (response) {
alert(response.d);
}
});
$('[id*=btnGet]').click(function () {
alert($(this).closest('tr').find('[id*=hfId]').val());
return false;
});
});
function SearchText(ele, hid) {
var hidden = $(hid);
$(ele).typeahead({
hint: true,
highlight: true,
minLength: 1,
source: function (request, response) {
$.ajax({
url: 'Default.aspx/GetContactNames',
data: "{ 'prefixText': '" + request + "'}",
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
items = [];
map = {};
$.each(data.d, function (i, item) {
var id = item.split('-')[1];
var name = item.split('-')[0];
map[name] = { id: id, name: name };
items.push(name);
});
response(items);
$(".dropdown-menu").css("height", "auto");
},
error: function (response) {
alert(response.responseText);
},
failure: function (response) {
alert(response.responseText);
}
});
},
updater: function (item) {
$(hidden).val(map[item].id);
return item;
}
});
}
function OnSuccess(result) {
var row;
var customers = $($.parseXML(result.d)).find("Table");
if (row == null) {
row = $("[id*=gvCustomers] tr:last-child").prev().clone(true);
}
$("[id*=gvCustomers] tr").not($("[id*=gvCustomers] tr:first-child")).remove();
$.each(customers, function () {
$(row[0]).find('[id*=hfId]').val($(this).find("CustomerID").text());
$(row[0]).find('.name').val($(this).find("ContactName").text());
$("[id*=gvCustomers] tbody").append($(row[0]));
row = $("[id*=gvCustomers] tr:last-child").clone(true);
});
$.each($('.name'), function (index, item) {
SearchText($(item), $(item).closest('tr').find('input[type=hidden]'));
});
};
</script>
Namespaces
C#
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Web.Services;
VB.Net
Imports System.Configuration
Imports System.Data
Imports System.Data.SqlClient
Imports System.Web.Services
Code
C#
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DataTable dummy = new DataTable();
dummy.Columns.Add("CustomerID");
dummy.Columns.Add("ContactName");
dummy.Rows.Add();
gvCustomers.DataSource = dummy;
gvCustomers.DataBind();
}
}
[WebMethod]
public static string[] GetContactNames(string prefixText)
{
List<string> names = new List<string>();
using (SqlConnection conn = new SqlConnection())
{
conn.ConnectionString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
using (SqlCommand cmd = new SqlCommand())
{
cmd.CommandText = "SELECT ContactName,CustomerId from Customers WHERE ContactName LIKE @SearchText + '%'";
cmd.Parameters.AddWithValue("@SearchText", prefixText);
cmd.Connection = conn;
conn.Open();
using (SqlDataReader sdr = cmd.ExecuteReader())
{
while (sdr.Read())
{
names.Add(string.Format("{0}-{1}",
sdr["ContactName"],
sdr["CustomerId"]));
}
}
conn.Close();
}
}
return names.ToArray();
}
[WebMethod]
public static string GetCustomers()
{
string query = "SELECT TOP 3 CustomerID,ContactName FROM Customers";
string strConnString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
using (SqlConnection con = new SqlConnection(strConnString))
{
using (SqlCommand cmd = new SqlCommand(query))
{
using (SqlDataAdapter sda = new SqlDataAdapter())
{
cmd.Connection = con;
sda.SelectCommand = cmd;
using (DataSet ds = new DataSet())
{
sda.Fill(ds);
return ds.GetXml();
}
}
}
}
}
VB.Net
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
If Not IsPostBack Then
Dim dummy As DataTable = New DataTable()
dummy.Columns.Add("CustomerID")
dummy.Columns.Add("ContactName")
dummy.Rows.Add()
gvCustomers.DataSource = dummy
gvCustomers.DataBind()
End If
End Sub
<WebMethod>
Public Shared Function GetContactNames(ByVal prefixText As String) As String()
Dim names As List(Of String) = New List(Of String)()
Using conn As SqlConnection = New SqlConnection()
conn.ConnectionString = ConfigurationManager.ConnectionStrings("constr").ConnectionString
Using cmd As SqlCommand = New SqlCommand()
cmd.CommandText = "SELECT ContactName,CustomerId from Customers WHERE ContactName LIKE @SearchText + '%'"
cmd.Parameters.AddWithValue("@SearchText", prefixText)
cmd.Connection = conn
conn.Open()
Using sdr As SqlDataReader = cmd.ExecuteReader()
While sdr.Read()
names.Add(String.Format("{0}-{1}", sdr("ContactName"), sdr("CustomerId")))
End While
End Using
conn.Close()
End Using
End Using
Return names.ToArray()
End Function
<WebMethod>
Public Shared Function GetCustomers() As String
Dim query As String = "SELECT TOP 3 CustomerID,ContactName FROM Customers"
Dim strConnString As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
Using con As SqlConnection = New SqlConnection(strConnString)
Using cmd As SqlCommand = New SqlCommand(query)
Using sda As SqlDataAdapter = New SqlDataAdapter()
cmd.Connection = con
sda.SelectCommand = cmd
Using ds As DataSet = New DataSet()
sda.Fill(ds)
Return ds.GetXml()
End Using
End Using
End Using
End Using
End Function
Screenshot
