I have a content page with a grid view control in it. In the page preinit event of this page, i am trying to add a column to the grid view. But the value of the grid view shows up as null. Is there something i am missing or how do we add properties to the grid view in the page pre init of the content page.
View 3 RepliesHow to get control in ASP.NET PreInit event? Pointers are null and FindControl method returns null.
I am using master and content pages. Markup of the content page looks like this:
<asp:Content ID="Content2" ContentPlaceHolderID="ContentBody" runat="server">
<asp:Table ID="Table1" runat="server" Width="100%">
.....
</asp:Table>
</asp:Content>
And code like this:
private void Page_PreInit(object sender, EventArgs e)
{
Control table = this.FindControl("Table1");
//table is null here
}
So table still is null after this.FindControl("Table1"). NamingContainer of the page is null too. What am I doing wrong?
UPDATE I have to use this event to create controls. As said in the ASP.NET Page Life Cycle Overview this event should be used for dynamic control creation. I need to create a list of links in my table. May be there is another way to do it?
how can we add Page's PreInit event programatically in code behind with c# language ? More precisely i would like to say if AutoEventWireup is set to false then how to handle Page's PreInit event ?
View 4 RepliesI have a master page and i am changing the masterpage file property to some other master page dynamically in the page PreInit event and that changing url is taken from a viewstate. but the view state is not getting in the pre init event.
View 2 RepliesI'm in a little bit of a bind and have some weird behavior happening with a multiview control behaving differently between two machines, and of course, the production machine is the broken one. The page renders the correct content on both machines, but if I save the html file the production machine's source is wrong.
For example, if for step 1 the output should be just the letter A, and step 2 the output should be just the letter B, and step 3 the output should be the letter C, here is what happens:
Step 1:
Production - The source and output are both the letter A
Dev - the source and output are both the letter A
Step 2:
Production - the source is the letter A and the ouput on the browser is the letter B
Dev - the source and output on the browser are both the letter B
Step 3:
Production - the source is the letter A and the ouput on the browser is the letter C
Dev - the source and output on the browser are both the letter C
Is this some issue with SessionState? I'm very new to Multiviews and by no means an ASP expert.
The following code works fine for disabling content page controls, but how do I disable master page controls?
public void DisableControls(Control control,bool isEnable)
{
if (control.HasControls())
{
foreach (Control c in control.Controls)
{
DisableControls(c, isEnable);
}
}
else
{
if (control is IPostBackDataHandler && !(control is IPostBackEventHandler))
{
if (control is WebControl)
{
((WebControl)control).Enabled = isEnable;
}
else if (control is HtmlControl)
{
((HtmlControl)control).Disabled = !isEnable;
}
}
}
}
I have a ShoppingCart UserControl on MasterPage. I have a following functionality: User adds item to the cart. after clicking the button "Complete Sale" in UserControl the page is redirected to "CustomerInfo.aspx" and after filling the Customer information and clicking on submit which is on CustomerInfo.aspx page i want to call the "Complete Sale" click event of UserControl from "Customerinfo.aspx" page.
Customerinfo.aspx.cs
protectedvoid btnSubmit_Click(object sender, EventArgs e)
{
try
{
bool val = false; int retVal = 0;
CustomerBiz objCust = newCustomerBiz();
objCust.FirstName = txtFirstName.Text.Trim();
[code].....
Here the Button text changes in UserControl. But i am not able to call the Click event of this button from CustomerInfo.aspx (ContentPage)?
I am working on a web form using VS 2010. The controls I've added previously to this form will show in the drop down list in code behind and are available to add events too. However any new controls I've added for last week or so are not visible in the list. I cannot access their events. I have scoured the forums and tried everything I can think of, nothing works.
View 5 RepliesI have a masterPage on that i am using AjaxModalPopup for login purpose.My requirement is when i login via Master page then it should show the Logged-in User details on the current Content Page that is using same master page.
Here i am using following code to get it back to the same content page after succesful login but it does not show the user details on the same content page rather when i go to next page then it appears.
if (Session["SignedIn"] == null)
{
ValidateUser();
ModalPopupExtenderMaster1.Hide();
string currentPageUrl = System.IO.Path.GetFileName(Request.Url.AbsolutePath);
Server.Transfer(currentPageUrl);
}
But it does not gives user-details on the same content page.
SO I download jqcalendar to include in my application as a starting point for a calendar (it is basically like Google calendar using JQuery/ASP.NET). I notice however when I click on a menu item on the master page, it shows up behind the content on the content page, as you can see here looking at the Maintenance menu:
I figure it has something to do with how the JQuery is rendering the page, but honestly not sure how to fix it. Here is the Jquery and HTML for the page:
Code:
<%@ Page Title="" Language="VB" MasterPageFile="~/Site.master" AutoEventWireup="false" CodeFile="Calendar.aspx.vb" Inherits="Admin_Calendar" Theme="jqCalendar" %>
<asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" Runat="Server">
<title>JQCalendar</title>
[Code] ....
Here is my situation: I have a user control that has a menu in it. This user control sits on my master page. It is my main navigation menu for my application. I am having an issue where, on one of my pages, users seem to be leaving the page before committing all changes to the database, which results in a loss of data. So what I want to accomplish is - if the user is leaving this page and the data has not been saved yet, I want to prompt the user and say something like "The information is not yet saved, are you sure you want to leave this page" in a modal popup. So my approach is this: In my menu user control, create an event handler called MenuClicked that is raised when the menu web control's (in the user control) MenuItemClicked is raised, I raise my custom MenuClicked event. Then on my master page, I can catch this event in NavMenu_MenuClicked. My problem is - I need to catch this event in my content page, not the master? Am I approaching this correctly?
View 2 RepliesCan I modify the properties of a content page control from an event fired from the master page?create a delegate and event on master page wire up the master page in the content page create the event handler (function) on the content page modify for example:
contents of the Text property of a textbox render a control visible (or hidden) etc...
How to get postback data in page preinit stage? Can I do that?
View 2 Repliesi am writing a login page in asp.net c# not using login control.i can create account and log in without problems as a user.the pages that require login has a separate master page.and i want to check if the user is logged in in masterpage page_preinit function but the problem is that child page event functions are called before masterpage's so i could experience a problem like session expire in child page before i get to check it in master page.is there anyway around this?
ok found the event im looking for. second one on the list
http://msdn.microsoft.com/en-us/library/dct97kc3.aspx
I am trying to do simple label text change on a content page. But the event is never fired.
[Code]....
What am I doing wrong?
I have a 20 PopupControlExtenders for 18 columns in a GridView. Every popup is has different content: HtmlSelect, HtmlAnchor, HtmlButton CheckBox etc. etc. -depending on the cell it is clicked on.
I'm using combination of DynamicContextKey, DynamicControlID and DynamicServiceMethod to populate these popups.
The problem is, when the grid is first loaded, all popups in all columns populate correctly. Problem arises when I flip a page in the gird. On the new page, the popup comes up, but there is no content. And NO error (like 500 or something). Now when I go back to the first page, no popup shows content here either. What am I doing wrong? Here is a sample ItemTemplate:
[Code]....
I have created a masterpage where I require user login. The content pages are only displayed if the user is authenticated.
<LoggedInTemplate>
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</LoggedInTemplate>
On my content page I have
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
<asp:DropDownList ID="dropdown1" runat="server"></asp:DropDownList>
</asp:Content>
When run, I can successfully authenticate and then when I attempt to view this particular content page I get an error on the page load where I'm trying to populate the dropdownlist. The error I get is a Null Reference exception. I don't fully understand the page lifecycle of an asp.net page, but I also don't understand why the page compiles successfully and its only when run that I get this exception. It seems that the control is not created when the page_load command is called. How can I change the contents of a dropdownlist on page load of a content page that requires authentication?
which page need to be checked. Master or Content. I dont think there is anything wrong in the content page.
View 1 RepliesI have two search options:
1. On Master Page there is a text box and button for search.
2. on content page there is form for with two texboxes and a button for search.
Now whenever i press enter key from keyboard, the masterpage button event is fires.
I mean in every case when I press enter key from keyboard the same event is called.
I want If someone fill the content page search form and press enter key, it fires content page event.I am doing it like this:
[code]....
but not working
I have a master page, which has a Menu control:
[Code]....
Now I want to "catch" the event when someone click on the new menu item ("Add File"), which will cause a panel in the content page to become visible. I can't catch it in the master page, because then I won't have access to the panel, and I don't know how to catch it in the content page.
I want to check to see if a contentPageLoad script exists or not, and if so execute code. if I do (if (contentPageLoad) {alert(contentPageLoad);} I get an error.
View 1 RepliesI have a master page that contains a navigational menu, made up of nested databound repeaters. Buttons are created for the outer-most repeater's items. When the user clicks on one of these buttons, the content page loads and a label within this content page changes to reflect the text from the button that was clicked. In other words - click a button, load the page, change the label on the page to the text on the button. I have tried also changing the initialization on the content page from Page_Load to Page_PreInit to Page_Init, and nothing seems to matter as I'd like to move on in this project! Code follows:
Master Page (Site.Master):
[Code]....
Content Page (BatchView.aspx):
[Code]....
The problem is, whenever a button is clicked, it changes the title of the master page to 'Not Working', which lets me know that the TeamChosen eventhandler is null!
Is it possible to show a GridView cell's content using AnimationExtender control in AJAX control toolkit?
View 1 RepliesIn master page I am using asp content place holder. And in my child page I am using pure html coding. When I attach master page in my child page I am getting this error.Content controls have to be top-level controls in a content page or a nested master page that references a master page.
View 1 RepliesHere 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:
[Code]....
Here is some code for the content page:
[Code]....