ASP.NET PreInit Event

ASP.NET page PreInit event is first event of asp.net page life cycle and fired before page initialised.

Syntax

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

ASP.NET PreInit 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><br />
        <asp:label ID="lblDisplayPageEventsSteps" runat="server" text="Label"></asp:label>
    </div>
    </form>
</body>
</html>
</code>

ASP.NET PreInit 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";
    }

}
</code>

Above example will produce following output

<code>ASP.NET Page Life Cycle
This is PreInit Event
</code>

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ASP.NET Page Life Cycle Events 22

Page_PreInit

ASP.NET Page_PreInit event

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asp.net Page_LoadCompleted event

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asp.net Page_Prerender event

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CustomValidator

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ValidationSummary

Display a list of error message using ValidationSummary

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ASP.NET PreInit Event

ASP.NET PreInit Event Example - Default.aspx

ASP.NET PreInit 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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