asp.net 4.0 vs2010
I'm developing an asp.net model -view-presenter (MVP), and to my surprise i see that when I click on the linkbutton in the window the Page_Load event is fired again. Is that normal? I'm used to webforms where we could just do a if (!Page.IsPostBack) if statement in the Page_Load. I did that but then no action happend when I clicked the linkbuttons in the window.
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?
My aspx page is not showing latest data after reopen the page.. but after save data it shows latest information.
If I close the project and rerun the project then it shows latest data.
Interesting metter is the page_load event is not fired after thie page loaded once.
If I delete temporary internet files from tools-->internet option then the page reloaded.
I have discovered something strange when using a ListView. I have a listview contained inside an uodate panel and everything works OK until I edit the editItemTemplate to use a LinkButton instead of a Button.When i use a LinkButton then the Page_Load event is fired.
View 3 RepliesI have a gridview that includes dynamically created dropdownlist. When changing the dropdown values and doing a mass update on the grid (btnUpdate.click), I have to create the controls in the page init so they will be available to the viewstate. However, I have several other buttons that also cause a postback and I don't want to create the controls in the page init, but rather later in the button click events.
How can I tell which control fired the postback while in page_init? __EVENTTARGET = "" and request.params("btnUpdate") is nothing
I've got a weird problem with a NullReferenceException on a high traffic website my company hosts. The exceptions are logged with full stack-traces but I am unable to reproduce it.The exception occurs a couple of times a day, for different users, and it's a NullReferenceException thrown in the code block below:
protected void Page_Load(object sender, EventArgs e)
{
...
if (!Page.IsPostBack)
{
...
this.ViewState[StaticClass.StaticStringProperty] = StaticClass.StaticIntProperty; // this is the line the exception occurs on
...
}
}
The only place I can figure that a NullReferenceException would be thrown is if ViewState is NULL, but I've never known that and can't find any reason why this would be the case in a Page_Load that isn't a postback.StaticStringProperty and StaticIntProperty are both initialised, static properties of StaticClass.
StaticStringProperty is defined as:
public const string StaticStringProperty = "IdFromClient";
Does anyone know how this could happen, or any other reason why a NullReferenceException would be thrown on the above line?
EDIT.As requested, the full stack-trace for the error is as follows. Line 54 is the line I've highlighted above.
at MyCompany.MyApplication.Appliance.Page_Load(Object sender, EventArgs e) in C:Documents and SettingsshellamaMy DocumentsMyApplicationAppliance.aspx.cs:line 54
at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)[code]....
Im using intelligencia urlrewriter as my url rewrite module. I have one very strange problem which only occurs when an url is rewritten but to make it more fun, not on all rewritten pages. Edit: Forgot to tell you what's the problem boing boing. the problem is that my Page_Load event gets fired 2 times.his is how my form rewrite adapter looks like:using System;
using System.Web.UI;
using System.Web;
using System.Web.UI.WebControls;
[code]...
I have textbox in which pincode has to be entered and it checks with database and gets city and state from database and fills data in other 2 textbox.I have kept asynchronous postback trigger on textbox textchanged event. After reterving data from database i set focus on other textbox of STDCode.But the problem with ie7,ie8 browser is that the focus comes on control but i can't write anything in stdcode textbox untill i move to another textbox. When i come back from another textbox i can write in stdcode textbox.Problem gets occured only in IE7,Ie8 browsers only.Here is design file of that page.
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<table cellpadding="4" cellspacing="0" width="100%">
[code]...
I have a page with a drop-down. Based on the selection in the drop-down, data gets loaded and populates a RadGrid. I am using a custom user control for the EditTemplate, so I can't use radGrid.DataBind(). Instead, I have to use radGrid.MasterTableView.Rebind() in association with a NeedDataSource event handler.
My problem is that when I load the page initially, I populate the drop-down and automatically select a value (first item in the list) which triggers the databinding on the RadGrid. I can step through the code in debug mode and see that the grid is being populated with data, but when the page displays, it doesn't get rendered. When I then manually choose an item from the drop-down, which triggers the same grid databinding code, it displays properly the second time.
How do I get it to display the grid the first time the page loads?
how determinate if postback was fired by click or press "Enter"
View 2 RepliesDuring Asynchronous postback (Ajax) will Page_PreInt() ,Page_Init(),Page_Load() events fire again?
View 1 RepliesOn Button click(postback), my dropdownlist of gridview is getting blank, so i m getting error of "Object Reference...." on the line "ddl.selecteditem.value"Also, dropdownlist's selectedindexchanged event is fired on Button Click(Page Postback), which is making the dropdownlist to go blank. AutoPostBack of dropdownlist is set as False,
View 8 RepliesI am using ASP button its working properly at client side but on server side its not firing.
<div style="text-align: center">
<div>
<div id="UserName">
<b>LoginName</b>
<asp:TextBox ID="txt_LoginName" runat="server"></asp:TextBox>
</div>
</div>
<div>
<div id="Password">
<b>Password </b>
<asp:TextBox ID="txt_Password" TextMode="Password" runat="server"></asp:TextBox>
</div>
</div>
<div style="text-align: right; width: 210px;">
<asp:Button ID="btn_SignIn" OnClientClick="LogInUser()" UseSubmitBehavior="false" runat="server" Text="Login`enter code here`" />
<asp:Label ID="lbl_InValidError" runat="server"></asp:Label>
</div>
</div>
Client Side Code:
function LogInUser()
{
var LoginName = document.getElementById("<%=txt_LoginName.ClientId %>").value;
var Password = document.getElementById("<%=txt_Password.ClientId%>").value;
[Code]....
[Code]....
A breakpoint is set on FillForm() and this method is called two times but I can't explain myself why this happens. I have client side javascript code, when the form is being send, the onsubmit method is also called twice... Where do I have to search?! Is it a (known) bug? Think I could get it to work with this Thread: [URL] But why is the event fired within the onblur-event when it's fired anyway??
i have a function that is getting called with Page-methods like this
Code:
protected void Bind_SearchBox(object sender, EventArgs e)
{
RadToolBarItem textItem = RadToolBar1.FindItemByText("Button1");
TextBox txtseach = (TextBox)textItem.FindControl("txtsearch");
try
{
f (sender.Equals(txtseach))
[code]...
Application_Start and Application_End are called only once during the lifetime of the application domain - thus they aren't called for each HttpApplication instance
Application_Start runs when first user requests a page, thus when the first instance of the HttpApplication class is created, while Application_End runs when the last instance of an HttpApplication class is destroyed.
But what if at the time of application domain being restarted there wasn't any user requests and thus no HttpApplication instances created? Will in that case Application_End still be fired?
I'm having problems with a custom control (which inherits from a user control) - my LoadControlState isn't getting fired.
Well, to be precise: it gets fired normally, but when i override the page's LoadPageStateFromPersistenceMedium and SavePageStateToPersistenceMedium functions, it no longer gets fired.
Are there any typical reasons for the LoadControlState not getting fired that i should look into? Are there any preconditions for when it does get fired?
This is probably a really simple question, but I'm looking for a way of running a particular script on my website which will be ran every time a page is loaded. Basically it to work as if the script is in every .aspx Page_Load of my project.
I tried putting the script in the Application_Start event of the Global.asax file, however I noticed this didnt always run.
I need to do HTML code manipulation for every loaded page in my ASP.NET application. Where is the best place to put my method? Put code into every web page Page_Load event in not very smart, what other alternatives?
View 4 RepliesI have a class named PageBase inheriting from ASP.NET Page. I want to do something in PageBase's Page_Load.All pages in my application have their logic done on their Page_Load. I'm thinking of a way that Page_Load of both of PageBase and other pages run without having to override Page_Load in pages. Is it possbile?
View 1 RepliesWhy DisplayUsers(); doesn't work?My base page is:
public class adminPage : System.Web.UI.Page
{
protected override void OnLoad(EventArgs e)
[code]...
I've seen programmers writting in Page_Load like
protected void Page_Load(Object sender, EventArgs e)
{
if(!IsPostBack)
[code]...
I am using a baspage class for my session checking by the following code
[Code]....
My rest of the pages are being inherited from above basepage class. but the problem is that all the pages inherited from basepage class are not firing the event Page_Init...?
SelectedIndex_Changed event occurs when selection changes, and selection is changed or not is decided by comparing dropdowns current selectedIndex and its value in viewstate.
When we changes dropdown's selected Item using Javascript, it does not change the viewstate's value (which is previously selectedIndex). Now if you change dropdown's selectedIndex to any new index it will work fine, but if you select the previously selectedIndex (which we reset using javascript), then postback will occur, but selectedIndex_changed function will not get fired because in viewstate of dropdown, selectedIndex is same as the Index we select after resetting it using javascript.
i have my login in a fancybox and fancybox div is in a controller. problem is if click the button nothing happens event isnt fired. this is my controller.ascx
<div id="inline1" style="width:400px;">
<ul class="forms">
<li class="inputfield"><asp:TextBox ID="kullanıcı_adi" runat="server"></asp:TextBox></li>
</ul>
[Code]....
I found the solution. Same question asked before. [URL]