State Management :: Dynamic Controls In A Page With Two Master Pages
Apr 12, 2010
I have a nested master page that I use for multiple pages. There is a ContentPlaceHolder that is used for only one page, but it is not shown until after the first postback and some validation. I was first trying to use static controls and set the Visible property on the ContentPlaceHolder to true after the postback and that did not work at all. Then was messing with the visible properties of the Individual controls inside the ContentPlaceHolder which also did not work. I have the EnableViewState set to false for the Page and each of the controls including the ContentPlaceHolder. Is there a better way to do this? I can post my code if need be just wanted to see if there was a better solution to this before I did.
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May 18, 2010
I am in the process of designing a blogosphere that enable readers to leave comments. I want my dynamically added label controls added to the placeholder on the page to be retained and displayed on subsequent requests or postbacks to the same page. how do I go about this? I have tried using View State but it's kind of beyong me how to work it.
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Sep 22, 2010
I have a question regarding disabling viewstate.
I know how to do this in the page, however if I disable in a master page will all child pages and controls be disabled through inheritance?
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Aug 2, 2010
I have a master page containing a tree and 3 dropdown lists. I am populating a context menu on right click of each node, and when clicked on any item of the context menu, it navigates to required pages.
My problem is after navigating to the required page, the selected values from the drop down lists and the selected node from the tree are getting cleared.
I can set the selected values for the dropdown lists by making some properties in master page.
But how do i maintain the selected node?
In my content page, i have got the valuepath of the right clicked node.
Or is there any other way than setting the properties in master page?
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Dec 30, 2010
I have created a matser page with a two radio buttons, text box and a button. Whenever user sets some values to these control and clicks the button, i will navigating him from one content page to another based on the data he has entered. The problem is after the content page load, the values selected/given in the controls(radio button, text box) are getting cleared.
Is there some way to maintain the values ?
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Mar 9, 2011
Not sure if the derived page is actually relevant to the problem here, but ran into an interesting gotcha on some code I'm working through at the moment.
I have a custom masterpage class, which derives from System.Web.UI.MasterPage so that it can be extended with additional useful properties. The page that that uses this masterpage has a declaration at the top (note the Page Title being set).
<%@ Page Language="C#" MasterPageFile="~/MasterPages/Landing.master" AutoEventWireup="true" CodeFile="Index.aspx.cs" Inherits="Index" Title="Welcome to the site" %>
In addition, the master page has stylesheet references in the head which are pulled from a CDN that is defined in a config file.
<head id="Head1" runat="server">
<link rel="stylesheet" type="text/css" href="<%= CDN %>/css/main.css" />
</head>
Now the example above obviously doesn't work, because the runat attribute in the head container means that the codeblock in the the link is static text, and renders as is, in the resulting html.
If I remove the runat attribute from head, the CDN works, but now I notice that the Title is no longer being set. If I debug, and try to access Page.Title in the Immediate Window, I get an exception:
// Using the Title property of Page requires a header control on the page. (e.g. <head runat="server" />).
So, is there a way to get the Page Title from the declaration, put my own title placeholder in the head and set it from the master page code-behind, or, is there a better way to dynamically set the CDN domain for the stylesheets? The only way I think I can do that is to build the entire html link tag(s) and append it to the header control, but I thought there might be a more elegant solution, so I'm asking here first.
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Jan 5, 2011
Please bare with me as I am completely new to ASP.net and trying to learn the language (I am a Flash and AS3 kinda guy).
I have a master page template and I'm trying to put a hit counter on the footer for each page. I'm using VB for this code.
[Code]....
And then in the footer div I use this code
[Code]....
It appears my counter.txt file isn't even being created like it normally was on my other single .aspx pages and in turn nothing is being displayed in my Label1.
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Jun 10, 2010
Im trying to use code provide in this link below.http://www.codeproject.com/KB/aspnet/MultipleTabWindows.aspxim trying to have the below code in my master page instead of adding to each page. it works if i add to each page, but when i add to ,master page the session value for "WindowName" is always null.how can i fix this?
<script language="javascript" type="text/javascript">if(window.name != "<%=GetWindowName()%>"){ window.name = "invalidAccess"; window.open("InvalidAccess.aspx", "_self");}</script>public string GetWindowName(){ return Session["WindowName"].ToString();}
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Jun 28, 2010
I am adding text fields to a page from the database. I set the .ID to match the record ID from the database. Of course becasue the text field is on the masterpage, when I grab the .ClientID, it is ctl00 contentMain$ctl00. what I don't get is where is my ID? If I set it to say AB how do I find the textbox by AB? I thought it should have AB in the ID somewhere. ID is nothing which I don't get either. I'm looping through the controls in a placeholder like this
For Each row In dtData.Rows()
Dim c As Control
For Each c In phTextRequired.Controls
If c.UniqueID = row("CustomFieldID").ToString() Then
Again though what is in the row() is say AB but the id is way off from that.
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Mar 22, 2010
I have a Web Application where I have one and only one master page and with 100's of diffrent content pages
So to speed up my Web app How can i CACHE the mater oage but not the content page??
Master page loads each time whenever content page is requested..
This thing is possible,I have seen it on many diffrent websites where the Website's Master Page Remains Intact and only the content page changes (best example would be Facebook)
How can i have the same effect in my Web Application?
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Jun 8, 2010
In my web application, I have to load different Master pages depending on the user log-in information. When I say different, I mean not just the colors but a whole new look[including navigation options]. So I am using 2 Master pages [one of them is set as default] and depending on the user information the other page will be used.
I got it to work by storing the user information in a Session variable and applying the master page dynamically using the Page_PreInit event. But the issue is, if I hit the back
button, sometimes [yeah, only sometimes !!!] the master page is reset to the default page. Initially I thought it is a Session timeout issue. But it isn't, as some of the session variables still have data. Can anyone explain whats actually happening?
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Aug 9, 2010
In my Application_BeginRequest I have code that gets query string value ?c=FR or ?c=US and store it in cookies.Based on query string value I have either US or FR,locale is selected from locale table.If ?c=FR then locale will be fr-FR and if it is US then locale will be en-US.My code is below.
void Application_BeginRequest(object sender, EventArgs e)
{
LocalizationInfo loc = GetLocalizationInfo();
if (Request.Cookies["Localization"] == null)
Response.Cookies.Add(new HttpCookie("Localization"));
Response.Cookies["Localization"]["Country"] = loc.Country;
CultureInfo objCI = new CultureInfo(loc.Locale);
Thread.CurrentThread.CurrentCulture = objCI;
Thread.CurrentThread.CurrentUICulture = objCI;
}
public static LocalizationInfo GetLocalizationInfo()
{
string countryCode = "";
string sLocale = "";
if (HttpContext.Current.Response.Cookies["Localization"]["Country"] != null)
countryCode = HttpContext.Current.Response.Cookies["Localization"]["Country"];
if (!string.IsNullOrEmpty(HttpContext.Current.Request.QueryString["c"]))
countryCode = HttpContext.Current.Request.QueryString["c"];
if (countryCode == "")
countryCode = "US";
sLocale = HertzRent2Buy.DataProvider.ListData.GetLocale(countryCode);
LocalizationInfo ret = new LocalizationInfo();
ret.Country = countryCode;
ret.Locale = sLocale;
return ret;
}
public struct LocalizationInfo
{
public string Country;
public string Locale;
}
Now when I run the project and in query string I set [URL] then for the very first page(home page itself) it shows me French translation,but on subsequent page,that query string parameter ?c=FR is lost and hence it shows be English translation not French translation since it does not pickup French resx file.If I manually append ?c=FR in subsequent page then it shows the French translation.Is there is way how I can make that query stringparameter available in all pages.Structure is there to hold Country and locale variables. In all pages I am calling GetLocalizationInfo() method as follow
LocalizationInfo info = some.DataProvider.Globalization.GetLocalizationInfo();
And I create instance info to pass locale and country as parameter. GetProductDetails(id,info.Country,info.locale). why my query string parameters get lost on subsequent pages.
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Sep 21, 2010
While generating dynamic controls like , textboxes, dropdownlist, checkboxes and radiobuttons, after filling the textboxes and etc and submit and then postback occurs, the dynamic created controls missing. I try to find a way to make the controls persist for validation checking. Tried to use Viewstate to store the pnlTextBoxes and etc, but it has serializable error.
[Code]....
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Feb 8, 2011
i have a Method which create textboxes dynamicly. When i change one of my textbox's text, it create that amount textbox and label. But my problem is, when i entered values to them and click my button, they are disappearing and i cant find my controls. Some of my codes
[Code]....
What should i do for solving this ??
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Dec 15, 2010
I have several dynamic user controls,that I want to load them in seperate tab panels.but my problem is when the postback occures my user controls disapeare from my tabpanels. however I want to keep my user controls in my tabs whenever I click on each tab.
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Oct 15, 2010
I have a set of dynamically-created (IE: by code) controls on my web page. Depending on which options the user decides to go (Edit/New), those controls are re-created with the appropriate information (IE: "with values" with Edit, "without values" with New).
Here's the situation:
- I create my controls in InitComplete when it comes to save the data (both on Edit/New) contained within the controls.
- I create my controls in PreLoad when it comes to load them initially (Both on Edit/New) in order to avoid the ViewState to kick in.
However, despite creating the controls after the ViewState has been applied (technically), the controls still somehow retain the pre-postback's information. IE: if I have options 2 and 4 selected and I choose "New", which should show the options without being selected, they remain selected no matter what. And this is true despite changing their values in the PreLoad state. From my understanding, creating a control in this fashion and at that point in the page lifecycle should override any values the ViewState might have had for those controls. I have also tried to disable the parent's control viewstate (Table.EnableViewState = false) again, to no avail.
I've tried using the Me.ViewState.clear() and Me.ClearChildViewSate prior to loading the initial values as well, but again all for naught. I do understand that any control created after the Init phase of the lifecycle has to play "catchup" with the current state, however I would expect that clearing the ViewState prior to creating the controls would fix this issue. It doesn't seem to.
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Feb 25, 2011
i have places a treeview in the master page, if i click on certain node it will navigate to some x.aspx page.here the proble is treview nodes all are collasped.
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Apr 30, 2010
I have been getting this error a lot lately with some of my users, and I had a couple of concerns with view state and I have read so many articles but I am still lost..
1. I use masterpage on all the pages and I need viewstate for some of the pages but..
There is a page where a user will fill out the information and then submit this data to a cgi server, and it is where I get most of the Client Disconnected errors, what would happen if I disable viewstate when they click on that button?
Now when a user browses from one page to another, does the view state from the previous page get deleted? If not how would I delete it?
Does the master page have its own viewstate? Would I be able to make sure none of items on my master page are using the viewstate?
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Aug 8, 2010
i have a widget(say some widget to get two cities) on my home page. also a submit button. when the user clicks the submit button, the value of cities given in the widget is passed to the next page and displayed in two text boxes respectively. sample code given below.
http://home.aspx/SessionHandler.aspx?pub=/english&pageurl=/search.aspx§ion=search&seldcity1=berlin&selacity1=dublin&selddate1=15-Dec-10&seladate1=29-Dec-10&resultby=1&bsp=Timetables&j=f&showpage=true&TID=SB&CID=
now i need to modify this page so that the search.aspx page should be dispalyed on some condition. smaple url:
http://home.aspx/SessionHandler.aspx?pub=/english&pageurl=/search.aspx§ion=search&seldcity1=berlin&selacity1=dublin&selddate1=15-Dec-10&seladate1=29-Dec-10&resultby=1&bsp=Timetables&j=f&showpage=true&TID=SB&CID=&showsearch=true
how do i acheive this? also, where should i modify the code. in the target page(search.aspx) rite? also which section of that page? some key words pls??
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Nov 28, 2010
Ive got an ASP.net web application and was testing the pages.At the moment I store a variable in the
System.Web.HttpContext.Current.Session[
say the user is authenticated when they have been verified on login.So if the login is successful the authenticated is set to true.This is checked on every page load to make sure they have logged in.What I did was to log in and then the Main Menu page is displayed.I copied the address of this, set the page to goggle's page then pasted the address back into the address bar and the page loaded back up.How can I stop this from happening?Should have some mechanisim to prevent this?If so how.
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Aug 20, 2010
how to pass the value from one page to another page in asp.net with out Using State Management Concepts?
Like 1. cookies 2.Sessiion 3. QueryStrings.With out using the above should pass the values..
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Sep 1, 2010
I'm trying to do dynamic switching of the master page in SharePoint 2007 publishing site.
I'm following this example which uses a HTTP Module [URL]
Here is my code
public class SwitchMasterPage : IHttpModule
{
public void Dispose()
{
}........
Everything is working fine when the current page type is an Application Page, however when the page type is a Publishing page (e.g. BlueBand.master) the page_PreInit procedure is never called - it is still being registered with the event handler though.
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Aug 11, 2010
We have used Session heavily in our application, we have created core classes (which have many properties) and store objects of core class in the session.
1) What could be the best solution for reflector activity?
2) What could be the best way to manage session in an application which has 100 pages?
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Feb 7, 2011
I am using Visual C#. ould smbd tell me how can i take the data inserted from the user (1. in a textbox 2. in a dropdownList and 3. in a radiobutoonList) and use (or display) that data in another .aspx page ?
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Nov 12, 2010
I had created one array who's value I want to pass to different webpages in asp.net,
I am looking for session variable ,,,, Is this correct way ,,,, and hw to insert value in array and fetch from it using session variable
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