GridView Auto Refresh In this tutorial i will let you know how to auto refresh or update GridView using AJAX Timer and UpdatePanel in asp.net. In this it is described that how a GridView is update after a specific time set in timer control.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Timer ID="Timer1" Interval="10000" runat="server" ontick="Timer1_Tick">
</asp:Timer>
<div>
<asp:GridView ID="GridView1" runat="server">
</asp:GridView>
</div>
<asp:Label ID="update" runat="server" Text="Label"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page\_Load(object sender, EventArgs e)
{
}
protected void Timer1\_Tick(object sender, EventArgs e)
{
databind();
update.Text = " Gridview Was Last Updated at " + DateTime.Now;
}
public void databind()
{
string strcon = ConfigurationManager.ConnectionStrings\["con"\].ConnectionString;
SqlConnection conn = new SqlConnection(strcon);
conn.Open();
string str = "select \* from dept";
SqlCommand cmd = new SqlCommand(str, conn);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
GridView1.DataSource = dt;
GridView1.