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Saturday, 2 August 2014

GridView With Autocomplete Textbox Using AutoCompleteExtender in Asp.net Using C#.Net

8/02/2014 - By Pranav Singh 0

This article will show you how you can use ajaxcontroltoolkit AutoCompleteExtender for displaying autosuggest textbox inside the gridview. In this article I have used asp.net, gridview, AutoCompleteExtender. In this article I have used access database.

So for this article first we will create a asp.net application and add a gridview and in this gridview add a AutoCompleteExtender. After all the control your page will look as shown below.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="GridViewBindWithTextBox.aspx.cs"
    Inherits="ProjectDemo_Asp.et.GridViewBindWithTextBox" %>
    <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>GridView With Autocomplete Textbox Using AutoCompleteExtender in Asp.net Using C#.Net
    </title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
            <Columns>
                <asp:BoundField DataField="author_name" HeaderText="NAME" />
                <asp:BoundField DataField="publisher_name" HeaderText="PUBLISHER NAME" />
                <asp:TemplateField HeaderText="TITLE">
                    <ItemTemplate>
                        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                        <asp:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server" ServiceMethod="AutoCompleteAjaxRequest"
                            ServicePath="AutoComplete.asmx" MinimumPrefixLength="2" CompletionInterval="100"
                            EnableCaching="false" CompletionSetCount="10" TargetControlID="TextBox1" FirstRowSelected="false">
                        </asp:AutoCompleteExtender>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
    </div>
    </form>
</body>
</html>

After this we will add an AutoComplete.asmx file and add the below code into it.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Data;
using System.Data.OleDb;

namespace ProjectDemo_Asp.et
{
    ///
    /// Summary description for AutoComplete
    ///
[WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
    [System.Web.Script.Services.ScriptService]
    public class AutoComplete : System.Web.Services.WebService
    {

        [WebMethod]
        public string[] AutoCompleteAjaxRequest(string prefixText, int count)
        {
            List<string> ajaxDataCollection = new List<string>();
            DataTable _objdt = new DataTable();
            _objdt = GetDataFromDataBase(prefixText);
                if(_objdt.Rows.Count>0)
                {
                    for (int i = 0; i < _objdt.Rows.Count; i++)
                    {
                        ajaxDataCollection.Add(_objdt.Rows[i]["LanguageName"].ToString());
                    }
                }
            return ajaxDataCollection.ToArray();
        }
        ///
        /// Function for retriving data from database
        ///

        ///
        public DataTable GetDataFromDataBase(string prefixText)
        {
            string connectionstring = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\\bookstore.mdb;Persist Security Info=False;";
            DataTable _objdt = new DataTable();
            string querystring = "select * from ProLanguage where LanguageName like '%" + prefixText + "%';";
            OleDbConnection _objcon = new OleDbConnection(connectionstring);
            OleDbDataAdapter _objda = new OleDbDataAdapter(querystring, _objcon);
            _objcon.Open();
            _objda.Fill(_objdt);
            return _objdt;
        }
    }


}

    
Now we will bind the gridview

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.OleDb;
using System.Data;

namespace ProjectDemo_Asp.et
{
    public partial class GridViewBindWithTextBox : System.Web.UI.Page
    {
        public string connectionstring = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\\bookstore.mdb;Persist Security Info=False;";
        protected void Page_Load(object sender, EventArgs e)
        {
            DataTable _objdt = new DataTable();
            _objdt = GetDataFromDataBase();
            if (_objdt.Rows.Count > 0)
            {
                GridView1.DataSource = _objdt;
                GridView1.DataBind();
            }
        }

        ///
        /// Function for binding retribing the data from database
        /// In this i have used Access DB you can use SQL DB to bind the data
         ///
        public DataTable GetDataFromDataBase()
        {
            DataTable _objdt = new DataTable();
            string querystring = "select * from Books;";
            OleDbConnection _objcon = new OleDbConnection(connectionstring);
            OleDbDataAdapter _objda = new OleDbDataAdapter(querystring, _objcon);
            _objcon.Open();
            _objda.Fill(_objdt);
            return _objdt;
        }
    }
}

       
Here we have done with code. Now I will give some explanation of this code. In html part of the code I have define the .asmx file name which Is ServicePath="AutoComplete.asmx" this will used for getting the records.


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