Web Forms :: Page Load Event Of A Page Is Firing Two Times Instead Of One?
Nov 6, 2010
now a days i'm working on my project. In project there is a aspx page which is binded with a masterpage, the problem is that when i run the project in debugging mode i found that page load event of a page is firing two times instead of one along with masterpage page's page load event. This is crreating a problem in filling a grid. I searched through the internet for this problem some says that it may happen if u have any image whose src="" or due to some bad HTML's on page .But i've gone through the page it does not contain any image whose src="" .
I am using forms authentication, and a session object to hold user information once the user is authenticated.
I am able to login and log out. I am able to log in and use the "remember me" functionality of the forms authentication.
When attempting to test the "remember me" functionality, the master page load event contains code to check the forms authentication & remember me, and retrieve user info from the database to automatically log the user in. This fires correctly, and the screens all load with the user successfuly logged in, and the users info is successfully stored in a session object.
Without touching anything on the screen, a moment passes and then the master page load event spontaneously fires again, Page.User.Identity.Name still contains the user name, however the session variable is now null, and throws an error.If I tell it to run past this error, it does, and the application continues to function normally, withthe session variables set correctly.
Its almost as if that second firing is ina different session, or something.
I have no problem posting code, but I have a profile class holding / handling the session communication, etc so it is a bit cumbersome.
I have a page with in a master page. This page has a user control with a text box and a button. I also have another button on the page. As the page first loads the button_click event on both the controls does not fire when clicking the buttons. I also have an event on the enter key on the text box. This event fires which causes a post back. After post back now my button_click event fire. The button_click event does not fire on the first page_load.
I have a data grid in which I have to display around 12,000 records. Even if I do paging it is difficult to display all the records. Is there any other control or something else so that I can display all these records. Even if I make these as alphabetical also, some times I have to load 1000 records in a page which is difficult.
I'm sure this is an easy one, but when I'm not using a code behind, I can get the Literal to change to my default text, but when I am using the code behind to insert my code, it's acting as if the Page Load event doesn't fire off, and the default text ofText to display2 is still shown, when it should show test. Can anyone show me what I've done wrong?
I created a search page with a lot of different functions. The page takes about 6 seconds to load so I'd like to work on making it faster. I first want to see what functions are taking the most time. I originally tried adding Response.Write(Date.Now()) throughout the code but didn't yield accurate results. I'm guessing it that's because .NET doesn't compile things linearly?
How do I create a new event in a base page class that fires after all derived pages have fired their load events but before any controls fire their load events.
The following code fires the event before the derived page's load event. I want it to fire the event after the derived page's load event but before all control load events:
Public Event FirstLoad(ByVal sender As Object, ByVal e As System.EventArgs) Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If Not IsPostBack Then RaiseEvent FirstLoad(sender, e) End If End Sub
Private Sub Page_FirstLoad(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.FirstLoad 'Stuff here happens before controls load but only on first page loads' End Sub
i have an form with an button and some input controls. some time due to input problem i may get error after that if i refreshed the page then that time the button click event has fired, how to avoid this kind of bad event fire.
in my web form i have a department dropdown box, in its selectedIndexChanged event i have to fill the equipment dropdown box and in equiment dropdown selectedIndexChanged i have to fill out the other textboxs.
the depratment dropdown box get its value from sqldatasource.
what i want is when i run the page, it shows the very first deparment in the list, and according to that it should pop up the values in the other fields, means it should show the values in the equipment dropdownbox and from that one it should pop up the values in the other textbox.
here is my selected indexchanged event for department dropdownbox
Here is the situation, I have a nested master page with set of global filters for reports. When they click the run button in the master I want the content page to process the filter and execute a general function called RunReport on the content page. Each report has its own content page with its own RunReport method. Everything I see online says to use public events with the RaiseEvent call. This was easy to code but it doesn't seem to be firing the event on the content page. How do I know, I have an error message section on the master page which I can send messages to from the content and it is displaying nothing. I also put a break point in the content page method and it never hit it. NOTE: MyPortal is a class that contains to variables call Master, which reference the main master page, and Validations which references the nested master page. The page does not throw any errors, it just refreshes like a normal button click. I have traced code to make sure it gets to the RaiseEvent call and when I tried to step into the code it skipped over the line. Here is some code for the nested master page:
I have a master page with a login box on it. Inside the login box is a button -
NOW ... On my local dev machine this code works fine. The control fires the event and everything is how it should be. When I run this site on a remote web server (tried two of them - both IIS7 running on 2008 R2) the event is never called. I added some logging to see what is happening and the PostBack event on the Master Page does not happen when the button is clicked - the page is just reloaded.
In my web form, i have 2 drop downlist controls. eg. dropdown1 and dropdown2. I will change the dropdownlist1 item, consequently selectedindexchanged event fires and reloads the dropdownlist2 items. And i have another button also in order to get the result based on the dropdown1 and dropdown2. Lets say for example, i have a list of countries in dropdown1 and a list of states in dropdown2. I selected "India" in dropdown1 and correspondingly "Tamilnadu" in dropdown2. And then click a button which calls the dataset based on dropdown1 and dropdown2. The problem i face here is, whenever i click on the button to load the dataset, dropdown1 value remains the same as the dataset is not called again, whereas the dropdown2 value changes to the first one as it gets called automatically during postback. For your information, I have loaded both the lists in the page load using (!IsPostback) property.
I'm working on a wizard-like set of page, and I'm relying on cross page postbacks to navigate between them.
I need to be able to trigger the Load event on the previous page in order to save the form data for the page.
I've been told that for situations of this sort all I had to do is access the PreviousPage property in the destination page and this would trigger the load event of the previous page but for some reason this doesn't seem to be working.
Is there anything else I can do to explicitly trigger the load event on the previouspage if the PreviousPage property is not null?
I have a fairly complex web app which has two levels of master page. The top level provides a nav bar constructed from a Menu control across the top of the page. Second level master pages provide menus down the side. It all works well.
On both Menu controls, I need to handle the MenuItemClick event. This works fine on the Menu controls on the second-level master pages. However, the Menu on the top level master does not raise the event at all.
This web site makes extensive use of Ajax and the top-level master page contains the ScriptManager. Before I go to all the work of creating a much simpler test site, why the Menu control is not raising the MenuItemClick event?
Here is the markup for the Menu in the top-level master:
Here is the MenuItemClick event handler:
The logging call in the event handler never gets called. Equivalent code in the Menu on the second-level master does get called.
I have a update panel on the ASPX page,When thepage loads the content in the update panel shouldnot load ( Update panel should show the Updatepanel progress control) but after page load update panel contents should load . How do i get this efect.