ASP.NET Page Load Event

ASP.NET page Load event will be fired when page is loaded including all controls in asp.net page life cycle.

Syntax

<code>protected void Page_Load(object sender, EventArgs e)
{
	//Code will come here. 
}
</code>

ASP.NET Page Load Event Example - Default.aspx

<code><%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" 
Inherits="_Default" %>
<!DOCTYPE html">
<html xmlns="https://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Label ID="lblTitle" runat="server" Text="ASP.NET Page Life Cycle"></asp:Label>lt;br />
        <asp:label ID="lblDisplayPageEventsSteps" runat="server" text="Label"></asp:label>
    </div>
    </form>
</body>
</html>
</code>

ASP.NET Page Load Event Example - Default.aspx.cs

<code>using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_PreInit(object sender, EventArgs e)
    {
        //This will fire before page initialised and set value to lable. 
        lblDisplayPageEventsSteps.Text = "This is PreInit Event";
    }
	protected void Page_Init(object sender, EventArgs e)
    {
        //This will fire when the page is initialised and set value to lable. 
        lblDisplayPageEventsSteps.Text += lblDisplayPageEventsSteps.Text = "<br/>This is Init Event";
    }
	protected void Page_InitComplete(object sender, EventArgs e)
    {
        //This will fire when page initialization completed and set value to lable. 
        lblDisplayPageEventsSteps.Text += lblDisplayPageEventsSteps.Text = "<br/>This is InitComplete Event";
    }
	protected void Page_PreLoad(object sender, EventArgs e)
    {
        //This will fire before page load and set value to lable. 
        lblDisplayPageEventsSteps.Text += lblDisplayPageEventsSteps.Text = "<br/>This is PreLoad Event";
    }
	protected void Page_Load(object sender, EventArgs e)
    {
        //This will fire when page is loaded and set value to lable. 
        lblDisplayPageEventsSteps.Text += lblDisplayPageEventsSteps.Text = "<br/>This is Load Event";
    }
}
</code>

Above example will produce following output

<code>ASP.NET Page Life Cycle
This is PreInit Event
This is Init Event
This is InitComplete Event
This is PreLoad Event
This is Load Event
</code>

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ASP.NET Page Life Cycle Events 22

Page_PreInit

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Page_PreLoad

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Page_Load

asp.net Page_Load event

Initialize variable value in Page_Load event

Page_LoadComplete

asp.net Page_LoadCompleted event

Initialize variable value in Page_LoadCompleted event

Page_Prerender

asp.net Page_Prerender event

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RangValidator

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CompareValidator

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CustomValidator

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ASP.NET Page Load Event

ASP.NET Page Load Event Example - Default.aspx

ASP.NET Page Load Event Example - Default.aspx.cs

Page_PreInit

Page_Init

Page_InitComplete

Page_PreLoad

Page_Load

Page_LoadComplete

Page_Prerender

Page_PrerenderComplete

Page_SavestateComplete

Page_Unload

RequiredFieldValidator

RegularExpressionValidator

RangValidator

CompareValidator

CustomValidator

ValidationSummary

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