Using IPostBackEventHandler On A Masterpage
Oct 24, 2011
I've used IPostBackEventHandler on pages in the past for calling the RaisePostBackEvent in my code behind via javascript.I'm currently working on a project that requires the same functionality but would be pretty cool if I could put it in my MasterPage, I've tried similarly it identically but I'm having no luck, I wonder if someone could point me in the rite direction.[code]It's something I don't really want to do on each and every page that uses that MasterPage.
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Apr 14, 2011
I am creating a new page in VS2005 (VB) and it has a gridview, my problem is when I try to insert the grid into the ContentPlaceHolder (in design mode) it ends up somewhere else on the page all together.
ASPX code
<%@ Page Language="vb" MasterPageFile="~/secure/Master1.Master" CodeBehind="Master1.Master.vb" Inherits="Main.LiveCalendar" %>
<asp:Content ID="ContentPlaceHolder" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
<h1>Live Calendar</h1>
[code]....
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Jun 8, 2011
I am posting this on behalf of a mate so repose from me might be delayed.
question:
Quote:
Never had to really touch a .NET website before and come accross a little problem and sifting through the massives of crap on google is proving tricky.
Got a masterpage file that contains this:
CODE:
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Apr 22, 2009
Server Error in '/' Application.Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEvent Validation method in order to register the postback or callback data for validation. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true" /> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.Register ForEventValidation method in order to register the postback or callback data for validation.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
[code]...
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Sep 9, 2009
It seems like I can't set the id or name of the form in my masterpage. [it's always "aspnetForm"]
Is there a way to override the uniqueID property of form?
I tried to create a class and inherit from htmlform, but then i can't register it on my mastrepage, [unknown server tag ... ]
im registering it like this
<%@ Register TagPrefix="cf" Namespace="Framework.BaseForm" %>
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May 16, 2012
I have a problem that my jQuery don't load or something when i'm on the contentpages.When i click on the link that should load the jquery,it only works at my startpage (Default.aspx). And when i click at the same link that is placed in my footer on any other contentpage, nothing happens. So i guess something is wrong with the paths or the loading of my scripts.Here is my scripts in the masterpage .
<script type="text/javascript" src="../fancybox/jquery.fancybox-1.3.4.pack.js"</script>
<link href="../fancybox/jquery.fancybox-1.3.4.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">[code]......
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Jun 14, 2012
I have a Master Page with nested pages in ASP.NET. Fairly simply I want to databind some hyperlinks to a gridview for the master page. This however is throwing a null reference exception when I try to set the DataSource.
I tested the code on a separate page and it works as expected. When debugging I can see the Page_Load Sub hit twice, I don't know if this is the cause I have one nested page being loaded, this is a blank page at the moment
EXCEPTION
Object reference not set to an instance of an object.
MASTERPAGE CODE BEHIND
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
[Code]....
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May 30, 2012
For my masterpage, I embedded an image on HTML DIV. Background image did appear, but with 4 white border-like surrounding my image, where I didn't apply any.
<head runat="server">
<title>Untitled Page</title>
<asp:ContentPlaceHolder id="head" runat="server">
[Code].....
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Aug 30, 2011
I have a MasterPage,defaultPage and Cropper page and I am able to use JCrop when I have only default.aspx page and not master page and the cropper page.
Problem:When I have am having masterpage then I am unable to use the Jcrop as it is not showing the Image Cropper rectangle.
Here is my code:
Head part of Master Page:
CODE:
Body Part of MasterPage:
CODE:
Here is my Cropper.aspx code:
CODE:
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Jan 16, 2012
I have some processes that run as a background job, allowing a user to continue to use a page, when the jobs are finished (which can take a few minutes) i want to display a message to the user, the best place to display this would be the masterpage AFAIK (incase they move from page to page on the site) so i have defined a div in the masterpage file.
I am trying to find the best method for displaying the data, at the moment i have a method in the masterpage vb file which polls a database to see if the job(which involves complex logic and some db access) has completed, if it has, it shows a message in the div e.g. "Job 13132 has completed" - which works fine.
The problem is this is not dynamic, and i have to refresh the page to call the function that checks if the processes have finished, how can i use AJAX to deliver this content automatically every 5 seconds?
I have tried using an asp timer with a 5 second tick time but the entire page refreshes on the timer click event every 5 seconds.Protected Sub Timer1_Tick(Byval sender as Object, Byval e As EventArgs)
[Code]...
Is there a way to only refresh the div with the updated message, without a full refresh happening using this code? Or if this is not possible, is there any way to replicate the above function using jQuery and still be able to update the DIV text only if a job as finished?
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Jan 8, 2009
I have a webpage that is used to modify information in a database. The information is properly pulled from the database and properly displayed in their appropriate text boxes. The problem arises when i change the information and try to resubmit it to be saved. Unfortunately it never takes my edited information and reverts back to the original value that was loaded when the page was loaded.
All of the code has been tested out side of the masterpage and it is working properly so i am under the impression that it has something to do with the use of the masterpage. If my understanding is correct i cannot just do something like me.txtName.text to address an object in the content pages. So here is a snippet of the code and the portion that i am assuming has a problem.
[Code]...
The code shows the two methods that i have used to try and use findcontrol to access the text boxes. Both methods seem to locate the textboxes but once I pass the values to linksUpd it reverts back to the value that was originally loaded into the page and discards all of my changes.
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Feb 2, 2010
I have masterpage.master.vb where I have properties, such as;
Private _SQLerror As String
Public Property SQLerror() As String
Get
[Code]....
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Nov 15, 2011
I'm developing an application which requires log in. I'm using Master Pages and a customer Web Control which is my main menu system. The main menu accesses database information to provide notifications and various things, none of which will work unless the user is logged in. I am trying to place the following code:
If Session("hgAdminUser") = "" And InStr(Request.ServerVariables("url"), "/Login.aspx") <= 0 Then _
Response.Redirect("Login.aspx") ' if userSession is empty, redirect to login page.
Into the top of my MasterPage code behind, but it's still trying to process scripts, the main problem being that it is running the .ascs file which requires Database access, which it can't do without the required parameters from Login. I've tried running it within a Page_PreInit sub, also Page_Load and Page_Init, but in all cases it ignores this (or probably doesn't ignore it, but errors come in before it deals with this) and returns a big fat ERROR due to functions that I don't even want it to be running!! How can I check for a session variable, which if not present cause all other scripts on the page to be ignored and redirect? This is all using VB.NET
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Sep 15, 2009
I have written methods to override the LoadPageStateFromPersistenceMedium and SavePageStateToPersistenceMedium methods. now the problem is that i am using a masterpage, so how do i maintain using my masterpage and still inherit from System.Web.UI.Page?
Bear in mind that the .vb Code behind the masterpage already inherits System.Web.UI.MasterPage. Anybody know how i can "properly" override these methods in a MasterPage?
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Mar 16, 2011
I'm using Lightbox but i only want the references to the stylesheet and javascript files to be in the masterpage header on one page on the site (the page that uses lightbox). how do I programmatically add references to the stylesheet and javascript files in the page load?
the stylesheet is the 'css' folder and the three javascript files are a 'js' folder
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Apr 7, 2011
I have more than 100pages in my project & a single master page for all this. My masterpage has links to different pages. I want to change only the ContentPages( Child Pages) & my masterpage should not get reloaded.[code]...
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Oct 27, 2010
This is the control structure
ContentPlaceHolder
Wizard
Panel
I am using setTimeout to display the panel after x minutes.
How do I get the ClientID of the panel?The line of javascript needed is something like:
setTimeout(displayExtendSession('<%= ExtendSession.ClientID %>', 600000);
[Code]...
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Mar 25, 2011
My application has a number of different users, currently there are different masterpages set up for them. The idea is for some type of breadcrumb in the system i.e. home > details > ...What is the best approach for this? I think I will need to define the separate paths that each user can have (all the pages they can view) in the Web.sitemap (will have multiple SiteMapPaths) and then add the sitemap control to masterpage and link them to the appropriate SiteMapPath, does this sound like the right way to approach this?
I am having an issue with setting up the SiteMapPath within the masterpage. I used the following tutorial http:[url]....aspx to try to use the control, but the SiteMapPath control is not displaying on the masterpage when I log in do you know what the problem might be?
Web.sitemap:
<?xml version="1.0" encoding="utf-8" ?>
<siteMap xmlns="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0" >[code].....
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Aug 20, 2009
I have a master page called SampleMaster.master and this page contains a Repeater control
The Repeater control will be used to display the relevant tags associated with each content page and the tags will vary between content pages
The data extraction method Tags.GetTags() is working but I do not know the best approach to populate the Repeater control in the master page dependent on what the content page is.
Would the code reside in the masterpage page code behind or the content page code behind?
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Aug 2, 2009
Does a Winform Framework exist for something similar to ASP.NET Masterpage or MS Access SubForm ?
With MS Access SubForm you can do like ASP.NET Masterpage. It's a huge loss of time with Winform when having to create a lot of complex form. You have to compensate with either Code Generation which create code duplication or do Runtime Dynamic Form which is much more difficult.
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Aug 3, 2011
I am using asp.net 4, .net 4 and masterpages. I added in the following code to my child page
Private Sub FoodChain_Init(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Init
MyBase.OnInit(e)
PopulateDropdowns()
[code].....
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Jul 19, 2009
I have a label in a master page (sample.master) called lblHeading.I want to dynamically change the text of the label when I load the content page.I need to do this because I want to change the heading to something meaningful but only after I know about the content of the page.
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Apr 1, 2012
I have default.aspx used masterpage, in master page i have a control called DefaultMenuContent, this control have a dropdownlist with autopostback, the problem is loosing the selection even if i use Is Not PostBack in control's load event, how to persist the dropdownlist selection?
In Master:
<asp:ContentPlaceHolder ID="MenuContentPlaceHolder" runat="server">
<art:DefaultArabicMenu ID="DefaultMenuContent" runat="server" />
</asp:ContentPlaceHolder>
[code]....
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Jan 31, 2011
I have MainLayout.master that has UC_Menu.ascx on it. I have a page named Customer.aspx that uses MainLayout.master. Customer.aspx also contains a UserControl named UC_Details.ascx.How can I have UC_Menu.ascx call a function that is in UC_Details.ascx with this scenario?
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