Page_Load is firing twice in ASP.NET page

Question

Asp.net page_load function is loading twice.. hence it affects my page performance. Does anyone know the reason it is loading twice.

No, iam not calling the page load function anywhere...

Answer 1

Just ran into this problem, and thought I would post an answer summarizing what I found, plus my actual issue.

1. img tags with src="" or Image tags with ImageUrl="" 2. Using AutoEventWireup="true" and adding a page handler 3. Having manually added the event handler (more common for C# than VB) 4. Handling both MyBase.Load and Me.Load 5. Variation on the missing img src, body { background-image: url(); } 6. Rewrite rule and missing favicon.ico  

and finally my issue....

My page inherited from a class that included a Page Load handler, which inherited from a class with a Page Load Handler.

Public Class C1     Inherits System.Web.UI.Page    Protected Overridable Sub PageLoad(ByVal sender As Object,                                 ByVal e As System.EventArgs) Handles Me.Load    End Sub End Class  Public Class C2     Inherits C1     Protected Overrides Sub PageLoad(ByVal sender As Object,                        ByVal e As System.EventArgs) Handles Me.Load         MyBase.PageLoad(sender, e)     End Sub End Class  Public Class MyPage      Inherits C2     Protected Overrides Sub PageLoad(ByVal sender As Object,                        ByVal e As System.EventArgs)          MyBase.PageLoad(sender, e)     End Sub End Class 

I tested this, and if you put a Handles on the method in MyPage, it will get hit 3 times...

Answer 2

It is not you calling the page load function twice, that is the way ASP.NET works. The page posts to itself, thus calling the page_load function, when any Server controls on the page are fired (those which as set to postback).

What you need to do is to put some checks to differentiate between an initial page load and a post back

if(!IsPostBack)  {   //Code when initial loading  }  else  {  // code when post back  }