Web Forms :: Button Click Event Is Called Before Page Load?
Oct 8, 2010
I just discover why some validation is working bad on some of my forms: the button click event is being called before page load.
What I need for good is (I consider this is a normal cycle of events):
The user press a buttonSome validation occurs at client side (js function returns true if success)Some validation occurs at server sideThe page loads again showing the results
But this is what I get (BAD):
The user press a buttonSome validation occurs at client side (js function returns true if success)The page loads showing no results, because server validation hasnt happened yet Some validation occurs at server sideThe page doesn´t loads again and I cant see the results, so my client cant know what happened on the server side
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 am having button named "btnSave" and there are some textbox controls (to name few, Emp Number, Full Name, etc). I've added RegexValidator to the textbox controls as below:
<asp:RegularExpressionValidator ID="employeeNumberValidator" ValidationExpression="^[0-9]+$" ControlToValidate="txtEmpNumber" ErrorMessage="Only integers are allowed" runat="server"> </asp:RegularExpressionValidator>
This RegexValidator will check for emp number textbox contains only integers and if not, it will display message "Only integers are allowed". Now, in my btnSave_Click(...) event, i am first validating whether the textbox contains data and if not, then i am highlighting the textbox in red. When txtEmpNumber contains non-integers data and if i click the Save button, the code in inside btnSave_Click(...) event is not getting called. But when i provide employee number in expected format and then click Save button, then the code inside button click event is getting called without any issues.
I am not sure why my btnSave_Click(...) is not functioning when Employee Number has data in incorrect format.
I have a situation in which i have a textbox which has a text_changed event. User enters the value in textbox, presses 'tab' after that text changed event gets fired it makes bit calculation, after that user clicks the button to save value in database. Problem arises if user does not press tab or click outside the textbox after filling the textbox and presses the submit button. text change event gets fired but not button click, user has to click the button again.
I will describe my problem in simple way so it's not exactly what I'm trying to do but the idea is the same.Here is the problem:
I create dynamic buttons from code behind.I get some id from query string,create button with that id ,dynamic add event handler to click event,and add button to placeholder.I store the list of id-s in session and in page load method recreate these buttons and add to placeholder.One of the id-s is CurrentId and it's also stored in session.Buttons click handler do something like this
In page load when I create buttons I want to set button text property different from others if id==Convert.ToInt32(Session["CurrentId"]) when list of id-s are gotten from session.But problem is that click event handler is called after page load,and when I create buttons in page load ,CurrentId in session hasn't been channged by click event handler.Can you suggest any solution to this situation?
I am also facing some issues with Back Button of Internet Browser as well. Actully Page Load event of my page is not firing when i click on Back Button of Internet.
I have a dropdownlisbox  , i am changing the selectedIndex by PageMethod(i.e it will change its  value and text on checkbox status). At that time it don't fire the selectedIndexchange method but when i click the button it fires(i.e on postback).
1. I need to load a user control on link click event of a link button during postback of aspx page.
2. On button click event of a save button on that aspx page, I need to read the selected values from that user control on further postback.
If I write the loadcontrol code in link_click event, the control is not recognized at all in the button_click event. When I shift it to page_init and execute only during not postback, the user control loads with default values.
I am using Ajax authentication service to login/logout users.And have 2 boxes one for logged users,another for any user.When user logged in he get loged in box,then go to another page,then press back,i have unlogged box.In Page_Load i check if (Reques.IsAuthenticated) then i change box on corresponding,in this case on Logged in box.But Page_Load is not called when i press button back(in browser) or backspace.
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I tried adding this to my select event but thats not correct i know.. so is it possible to execute another buttons event?
I have a button which starts processing. I want that when ever a button is click from page1.aspx .. a count down timer should start and displayed on page2.aspx. I am thinking of using iframe to join 2 pages.
I have page on which I've a login control in which I've a subnit button. The problem is this that when I refresh the that page the submit button or any button that was clicked last before page refresh gets its click event automatically fired.
I have a button for which there is a OnClientClick() event which calls a javascript method on clicking the button. Everything is good till this point.Now, when clicking on ENTER button on the key board instead of clicking on BUTTON the Java script is not being called.
I am using ASP.NET 2.0 with C#(No AJAX) in my project. In a particular web page, when the a button is clicked, some server intensive processing occurs before the same page is displayed again with the results. While code execution happens on the server in response to Button_Click event, a blank white page is shown to user on his browser in between post backs.
How do i show a message in this case, that the processing is still going on and ask the user to wait.
I have used javascript to show a message on page unload. But this message is also erased when the page is posted back to the server and the user sees a blank white page on his browser. How do i avoid this white page? Is there a way to show a message in the blank white page ?
I have a Asp:modal (AJAX) that works fine on a master.page
When i then add an asp:menu with sitemapdatasource, then the page works fine first time at page load, but if i then click the btn that trigger the asp:modal i get this error
[URL] ....
What I want is that the user can write an email in a textbox on the masterpage and then hit a btn, if the email is valid 100% the event is trigged and the asp:modal is showed, its works fine when i dont have a asp:menu on the masterpage, but when i then add the menu, then the pages works, but when i will trigger the asp:modal then i get the error.
I have the below structure. Admin_note --> AdminBasePage --> System.Web.UI.Page.But Page_Load does not call in AdminBasePage when calling page_load in Admin_note class.Do you know how to solve??
Using Forms authentication, for some reason my login page is called 9 times. it causes some browsers to show "too many redirects!". Even with no javascript and nothing in the page_load event, it is called 9 times.
I have a simple ASP.NET web application for data collecting (a webform with two text fields and a Telerik editor, a button for submit with server side OnClick event listener attached).The event listener saves data on DB and then redirects to another page.Under development web server the application works fine.When published under IIS7 the event listener doesn't fire. The only way i found to make it work is to specify the action on the form tag:
