What is Postback in asp.net ?

Hi Murari,

PostBack is the name given to the process of submitting an ASP.NET page to the server for processing

for More information :

http://www.c-sharpcorner.com/uploadfile/2f73dd/what-is-postback-in-Asp-Net/

Example :

If you have an example,

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>
>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server">asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Button" />
div>
form>
body>
html>

And our code is ,

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

namespace WebApplication1
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
TextBox1.Text = "On Load";
}
}
}

enter some text in text box , IN default the text box will have "on Load" text. change the text and click ok.

Whenever you click the submit the button , the request will send to the server and the page load event will trigger and again the text box value will be "On Load".

Test it!.. you can understand easily!...

1 Reply

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Ramesh Palanivel9y ago
Accepted answer
Hi Murari,

PostBack is the name given to the process of submitting an ASP.NET page to the server for processing

for More information :
http://www.c-sharpcorner.com/uploadfile/2f73dd/what-is-postback-in-Asp-Net/

Example :

If you have an example,
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>

>

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

head>

<body>

    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="TextBox1" runat="server">asp:TextBox>
        <asp:Button ID="Button1" runat="server" Text="Button" />
    div>
    form>
body>
html>


And our code is ,
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication1
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
TextBox1.Text = "On Load";
}
}
}

enter some text in text box , IN default the text box will have "on Load" text. change the text and click ok.

Whenever you click the submit the button , the request will send to the server and the page load event will trigger and again the text box value will be "On Load".

Test it!.. you can understand easily!...
+1