Web Forms :: Why Page_load Is Called Twice In Web Application
Mar 29, 2010
Initially in my website page_load for the landing page say test.aspx was called twice everytime when it was getting loaded. Since my application is an upgraded one (from VS 2003 to VS 2005/2008), I commented the "this.load" event in InitializeComponent and it is working fine, when user first logs in, into my web application. But then, whenever user navigates to this page from any other page in my application, page_load gets called twice.
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Similar Messages:
Jan 19, 2011
Please have a look at my VB/ASP code and tell me if you can see what's wrong (I have bolded the important segments):
[code]...
Basically, I'm trying to get the Page_Load subroutine to execute on the page load, but it doesn't seem to be called. I'm assuming that because I set my feedback label to "feedback" in the Page_Load subroutine, I should see it displayed on the page saying"feedback" on first loading the page and every time I refresh. But this doesn't happen. I'm lead to conclude that the Page_Load subroutine is not being called on the page load.
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May 5, 2010
I have a page, which load a tab with usercontrol this usercontrol inturn loads an another usercontrol that has treeview. Issue: On (!Postback) of treeview control page_load, this load is gettting called twice. it is not callign the page_load of page but just the control page_load twice.
Tried: changed autoevenwireup from false to true, true to false (no change) Add/Remove of EnableViewState="true" ViewStateMode="Inherit" doesn't make any difference.
but if i add another usercontrolB and load that instead of this controlA, the ControlA still gets called on page_load once and ControlB also once.
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May 20, 2010
I have a TreeView on a page which I will populate the nodes on demand and a checkbox, and they are in the same updatepanel. I can dynamically add new nodes to this treeview. But when I click the checkbox which will cause a postback, the TreeNodePopulate is called before the Page_load and it will regenerate the nodes that was added before. I was very confused how could this be happened. Is this related with PopulateOnDemand and Expanded priorities?
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Feb 2, 2010
I've got a page Default.aspx, it was inherited from class MyBasePage
like this
public partial class _Default : MyBasePage, ICallbackEventHandler
{
}
also it has a master page
<%@ Page Language="C#" AutoEventWireup="true" EnableEventValidation="false" MasterPageFile="~/Master/MyMaster.master" CodeFile="Default.aspx.cs" Inherits="_Default" %>
this master page also has a master
<%@ Master Language="C#" MasterPageFile="~/Master/Base.master" AutoEventWireup="true" CodeFile="MyMaster.cs" Inherits="MyMaster" %>
All works ok, but then i discovered that
Page_Load in Default.aspx is called two times, and both from method OnLoad in MyBasePage
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
}
base.OnLoad(e) calls Page_Load.
I've got a site with such a structure of master pages and basepage, but it works ok, method page_load is called only once.
So why would in the second site PAge_Load be called twice?
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May 1, 2010
I have a class (.cs) in my web application project called CompanyResponseInfo.cs. This class inherits from a class called, ResponseInfo.cs, which is from a class library which is referenced as a compiled dll in the web application. CompanyResponseInfo is called from the ResponseInfo base class. In the CompanyResponseInfo class I need to build a file path to a file that resides in the directory 'web root/resources/standard.xslt'.
Now i know that because CompanyResponseInfo is instanciated from within the inherited ResponseInfo class from a referenced library, the 'System.Web.HttpContext.Current' object is null so I cannot gain access to MapPath and all the other Server object properties for me to obtain path properties relating to the web application.
I have also tried using 'System.Web.Hosting.HostingEnvironment.MapPath' which did work locally, but when I put the web application on our test IIS server it never worked correctly as it seemed to use the path in which IIS resides.
I guess this would be a common problem, so what are my options in my case when I need to get the absolute web application path so I can use it to get the absolute path for a XSLT file so I can load it into the XslCompiledTransform.Load()?
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Aug 24, 2010
I have an application written in c# and I am using the sqlClient to connect to database. I have several methods and I usually open the connection in a try catch block
try{
**open connection**
//Mehod1()
//Method2()
........
}catch(exception){
//Do something
}finally{
**close connection**
}......................
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Apr 13, 2010
I am trying to make my ASP.NET MVC 2 application working from a test server.
Since I am using IIS 6 in my test server, I have to define in the Global.asax.cs file:
routes.MapRoute(
"Default", // Route name
===> "{controller}.aspx/{action}/{id}", // URL with parameters
new
{
controller = "Home",
action = "Index",
id = UrlParameter.Optional
} // Parameter defaults
);
This complicates the correct definition of the URL in my getJson() calls for my site production version.
When running my site from the test server, I found using Fiddler that the URL reguested by the browser
for getJson() calls is:
/Controller.aspx/Controller Method
which is correct, but probably, not the complete necessary path for getJson() to work.
I think that this is the reason for getJson() calls to give "Page Not Found(404)" in Fiddler and a syntax error in FireBug and to be skipped completely when trying to execute. Of my understanding the complete path should be:
/My Site/Controller.aspx/Controller Method
I use jQuery 1.4.2.
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Jan 6, 2011
I want to call an action method when an textbox gets focus to get a description of the model object that field is associated with from a database.
I have this jQuery function:
[code]...
It works fine as far as getting the test text, but the problem is if I set a breakpoint in the action method, I see that it gets called over and over, not just when i change focus in the text boxes...
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Feb 16, 2010
I had a general question about extracting code from a visual studio web test. I used the "generate code" option of a web test and got the following:
[code]....
What I wanted to do is basically put this test into a separate service to run throughout the day for purposes of health checking. I basically want to make sure that users are able to log in throughout the day. What process should I use to get the test into something like a console app? I was running into issues with debugging the webtest code.
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Sep 15, 2010
In my MVC application ,I am updating my web.config at runtime through application_start event.So, ideally it should be done only when the application is started.BUT in MY mvc application the application_start event of global.asax is being called multiple
times , even when i have not restarted the application.
Its being repetadly called when i am calling different actions , so the webconfig is repetedly updating & making my application very very slow. what's the reason & how to handle this .
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Jul 30, 2010
Web application initialization is as follows:
As we know when IIS receives the first request for a particular Asp.net application resource, IIS creates an instance of a HttpApplication (defined in global.asax codebehind).When this new instance is created it's initialization happens that also checks all configured HTTP modules.All modules are then instantiated and put in the application's Modules collection (of type HttpModuleCollection)modules are looped through and their Init() method is called (when they register for request events)
As far as I understand it the above scenario happens when a web application is started/initialized (hence application start event).What happens with modules?
Are they (re)instatiated on each request or reused from the Modules property on each consecutive request while the web application is alive? As I understand IIS and Asp.net they are reused through the whole life of a web application.
If they are reused, can we assume that their Init() method is actually a pseudo event handler for application start event? The thing is we can't attach to application level events within http modules. But if they are being reused we could use Init() as application start event and do whatever we'd put in global.asax instead.
Question,Can we assume that module's Init() method is called only on application start event? Could we use this assumption to i.e. register routes for applications whose global.asax codebehind we can't change? web.config is usually accessible and we can change it the way we want.Would this actually work?
Additional info,We can check HttpApplication code and check its InitModulesCommon() method. This one actually calls Init() of each registered HTTP module. What is more interesting is that this method is only used by InitIntegratedModules() and InitModules() methods. Which are both used only in HttpApplication.InitInternal() method. This is the basis of my assumptions, but I would like to know whether someone has abused IHttpModule.Init() for application start event.
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Feb 14, 2011
I am developing a website using ASP.NET 2.0 with C#.
Now i need to disable the Variuos key combinations such as CTRL_ALTR_DEL, .......after pressing any key on the web page irrespective to the page controls. I need this code snippets in the C# of a ASP.NET Webpage....
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Nov 17, 2010
I have a couple of sqldatasources. One of the control's parameters is based on another's selection. How can I control which one selects first? Does this occur in code behind? Is there an event that I can set a sqldatasource.select() before the other one selects on it's own time?
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Aug 11, 2010
,im loadinginformation via sessions when the infomation loads to on one of my labels it looks like this 2221.0000 but its not a double number i think any more.But i need only the last two letters to be removed on page load eventI know this is easy....i have tried this lblpn.Text.Substring(0, lblpn.Text.Length - 2); //in page_load
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Mar 15, 2011
I work with C# my problem is : the Page_Load event executef twice, I edited the AutoEventWireup property to true and didn't beusefull
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Jan 12, 2011
i want to fire post back on page_load
i need to execute my control, whihc i can call on _postback()
how i can do
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Sep 7, 2010
I'm trying to call a base class specifically; Release class into a Page_load method.The release class is linked to a baseclass which contains a method Dataset GetresultHow do i call from the release class into the page load and use GetResult.
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Apr 20, 2010
I've been trying solution I've found oline all day trying to get a GridView to Display its Header when its datasource returns 0 rows. So far, nothing has worked for me. I did come across an interesting bit of code, but I'm having a spot of bother with something else preventing me from getting it to work.
[Code]....
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Jul 7, 2010
I've reated a project containing 15 pages , (inculding one for logging in )well , i've noticed that actions located in the page_load function are not executed! (i've tested with changing the text of a label and a text box) and it's in all pages except the authentification page!i've read tht it's probably due to the DATETIME class used in pages. but is there any other explanation? or is there any way to fix the problem
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Jun 28, 2010
how catch Enter in Page_Load VB.net
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Jun 13, 2010
i was debugging a test page when i noticed that its init and load event handlers are being called twice.
i found out by search that this may arise due to some html tags which im not using in my page,
also some line:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load,Me.Load
may cause this problem.
i use c# in the code behind aspx, if such line is the problem, in which file should i look for?
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May 14, 2010
I would like to refresh a asp.net page from Page_load function.Basically i am calling a function which update a sharepoint UIcontrol but i need to refresh the page manually with F5 to update the changes.
[Code]....
What i would like to do is refresh the page programmatically in c# after updateLoginUser(url); code.I have been looking at http://forums.asp.net/t/1161549.aspx but it tells me how to do in javascript.I would like to refresh the page after Page_Load has been completed. Therefore just after updateLoginUser(url); code.How can I do this easily ?
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Dec 1, 2010
I have a page with four panels. On page load all the panels are visible. there are radio buttons YES and NO. i have written java script such that if YES is clicked, certain panels are displayed and if NO is clicked, other panels are displayed.Now my problem is, on page load i dont want all the panels to be visible. If i use <control>.visible = flase on page load for those panels, java script is throwing error "Object Missing" when those radio buttons are clicked.
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Jul 30, 2010
what is difference between Page_Load and form1_Load
Protected
Sub Page_Load(ByVal sender
As
Object,
ByVal e
[Code]....
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