Web Forms :: Updating Master Page PlaceHolder With UpdatePanels?
Aug 30, 2010
I have an ASPX page with two columns. The left column has a GridView control that contains a list of article titles as LinkButton controls. When a LinkButton control is clicked, the content of the article is displayed in the right column. Each of the columns
is wrapped in an UpdatePanel. So far everything is working .
Each article title has further descriptive text that is defined in the code-behind as labels within a Div object. Each Div is added to a PlaceHolder object on the master page. References to the Div objects are added as attributes to the LinkButton so that JavaScript is executed when the user rolls over the title and the Div object with the descriptive text is displayed.
The rollovers are working fine and displaying the correct text for the first GridView page. However, when I click a button in the GridView's paging row to advance to the next page of the GridView list, the rollovers are not updated. The text is what was defined for the first GridView page of titles. How should I get the PlaceHolder objects to update when the UpdatePanels are updated?
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Sep 8, 2010
in my master page content place holder.
i have a grid which is going out of placeholder (as its bit bigger ), when page is loaded. i would prefer it to stay inside the placeholder or expand the placeholder.
Currently its going out side and when it moved out of placeholder it becomes transparent to the materpage default template.
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Dec 29, 2010
<p> I want to specify a page to load an external link so it only appears on that one page. I've updated the site.master file with this code
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Feb 15, 2010
My application has a Parent master page, a child master page and an aspx page( inheriting the child master page)
> Parent master page has two content placeholders ( A and B)
>Child master page uses the content placeholder A and instills two more placeholders ( C and D)
>aspx page can now use C and D naturally
However i would like to know whether the aspx page can place contents inside the placeholder B( which was not used by child master page)
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Dec 21, 2010
I tried this much:-
protected void Page_PreInit(object sender, EventArgs e)
{
class1 obj = new class1();
DataTable dt = new DataTable();
dt = obj.get_text();
ContentPlaceHolder ContentPlaceHolder1 = ContentPlaceHolder)this.Master.FindControl("ContentPlaceHolder1");
ContentPlaceHolder1. ????
}
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Dec 2, 2010
I have an update panel that is triggered by radio buttons. Its pretty straightforward.. show a form if one button it clicked, or another form if another button is clicked. In IE 7, 8, Firefox, etc. this works fine.
In IE6, the radiobutton selection doesnt update the form. If I make a selection, then click the submit button, when the page reloads it will be in it's desired state (meaning the correct form will show). So it's almost like the AutoPostback isnt firing to update the page.
Here's a shortened sample of what Im running into:
[Code]....
In response to @Pabuc below, Im setting the visible property of the table in "Code for Form AB" to true or false depending on the radio button selection.
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Jul 30, 2010
I have an "Edit" page that uses a FormView bound to an EntityDataSource. The page is called with the ID field of the record to edit in the query string: "EditEmployee.aspx?ID=10". The EDS the FormView is bound to is using: AutoGenerateWhereClause=true and a QueryStringParameter. Below the FormView I have a ListView that contains some child records of the FormView. The ListView is bound to a seperate EDS and also uses the (same) QueryStringParameter.
The problem I am having is when this ListView attempts to Insert or Edt a column I receive an error because I don't have the ID field (EmployeeID) of the parent bound anywhere in the ListView (and obviously, it is setup as a ForeignKey so it fails, like it should). Any advice on the best way to get this ID (EmployeeID) column bound in the ListView? There are many things I can do in code behind, but I would like to solve this in the markup if possible. I can move the ListView so that it is inside of the FormView if necessary.
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Jan 2, 2010
i have a usercontrol which fires a mehtod in the masterpage, the method does fire but the placeholder i want to unhide does not until i refresh the page, how can i get around this?
if (this.Page.Master is Whoops)
{
Whoops barMasterPage = (Whoops)this.Page.Master;
barMasterPage.bindBasketSummary();
}
public void bindBasketSummary() {
plhLoggedIn.Visible = true;
}
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Dec 13, 2010
I have a label within my master page that is part of our footer. In the footer, we are wanting to display page specific information. So as you make your way around the site, the footer will contain content about that page along with other data that is universa on the entire site.I had a somewhat similar question some time back that i posted here..
http://forums.asp.net/t/1615850.aspx it was for a shopping cart of sorts..
cartct.Text = ShoppingCart.Instance.Items.Count().ToString() + " Items In Cart";
If Label is in master page, you have to use FindControl to get the Label and udpate its text
((Label)Master.FindControl("cartct")).Text=String.Format("{0} Items In Cart",ShoppingCart.Instance.Items.Count() );
once you select another page, you dont have it anymore,If you want to share data across different pages, consider using Session to save Items count.
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Mar 24, 2011
On my Page_Load command for a page, I have a couple of tests that are performed before the screen is displayed with an alert box displaying if the user cannot access the screen. If Not Page.IsPostBack Then
UpdatePanel1.ContentTemplateContainer.Controls.Add(ctl)
UpdatePanel1.Update
UpdatePanel2.ContentTemplateContainer.Controls.Add(ctl)
[code]...
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Jan 19, 2010
how to maintain state of placeholder. i have a placeholder in which i add many image controls dynamically but when my page get refresh all controls from placeholder gets removed from it. the enableViewstate of placeholder is set to true.
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Mar 11, 2010
I have a repeater and within that repeater, I have an item template. Now this template is formatted with a couple of tables, but for this question I have removed them to make things easier to read:
[code]....
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Feb 8, 2010
I have an Image control (for logo) on the master page as follows:
<asp:Image ID="imgLogo" ImageUrl="~/Images/logo.jpg" runat="server" />
I am allowing my users to upload their own logos. So on the page where they upload their logo I want to replace the existing logo with the newly uploaded logo. I tried the following but none of them worked:
1) Did a Response.Redirect back to the same page and it didn't work.
2) Tried the below code after the image upload is complete and even this didn't work:
Image imgLogo = (Image)Master.FindControl("imgLogo");
imgLogo.ImageUrl = "~/Images/newLogo.jpg";
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Feb 1, 2011
I have master page that has a Telerik radmenu control.
[Code]....
On the content page, I populate this control with menu items.
[Code]....
This part works. The menu items are populated with the correct navigate URLs. The content page allows users to change parameters that are inside an update panel.
[Code]....
After the values are updated, the LoadShareMenu function is called again. I have verified through the debugger that the function is being passed the updated values and that the returned RadMenu is populated with the correct NavigateURLs. However, the RadMenu control on the webpage remains unchanged. The original NavigateURLs remain.What final step do I need to do to cause the RadMenu to update?Here's the code for the FindControlByID function:
[Code]....
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Mar 11, 2011
In my child page i have an imageButton, which is surrounded by the UpdatePanel. When the user clicks on the image button a record is removed from my database.
<asp:Content ID="Content1" ContentPlaceHolderID="Content" runat="server">
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<Triggers><asp:AsyncPostBackTrigger ControlID="btnRemove" /></Triggers>
<ContentTemplate>
[Code]....
In my master page i have literal control which displays the records for the current user (something like Records: 10)
The RecordsCount control is updated on the page Load event of the MasterPage
Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
RecordsCount.Text = GetRecordsCount()
End Sub
How can i update the RecordsCount control? I mean i use postbacks for removing records from the database. And currently the RecordsCount control will be updated if the user hits the Refresh button of the Internet browser. How could i apply the Jquery Highlight on the RecordsCount control when the user clicks on the btnRemove button on the child-page?
UPDATE: Well the first question is solved by using javascript
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Feb 1, 2011
GOAL: on a web page (vb.net) content in a placeholder will refresh with a different .ascx (user control) every 30 seconds (rotating 3 in total) and of course i dont want to refresh the whole page, just the placeholder.
I'm new at AJAX (that's my first problem - lol)
I set the timer up to call a function, but not sure how to go about refreshing the placeholder with a different ascx file. I'm sure i'll be using UpdatePanel to do this, but haven't been able to figure this out. Easy to replace a value in a label using AsyncPostBack trigger, but nothing on how to achieve this.
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Aug 2, 2010
I am having a slight problem with adding text (output from a stored procedure) to a label control that is nested inside a contentplaceholder (ContentPlaceHolderProductsLeftCol). The page is also using master pages.
Below are excerts of the code - I think I would have to use teh findcontrol property however I am quite lost.
Label name is lastname and is located in ContentPlaceHolderProductsLeftCol
[Code]....
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Jan 6, 2011
I m facing problem updating a method which shows the count on master page. That method is bind to treeview control.Whenever a data is saved count is incremented to one. but method gets refreshed only when there is a postback. I want it to be updated after every few seconds or whenver there is data saved. there is pretty gud solution with custom ajax that is with json. But that is not possible with exiting solution.i have to redesign the complete treeview structure in html. And with timer control of ajax whole page gets refreshed.
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Aug 19, 2010
I have a label on my master page (called mainMenu) that shows the number of items in a cart. The label wasn't getting updated when the cart was cleared until after an additional postback or redirect so I created a method on the master page called UpdateNumberOfItemsInCart to update the label text.
Using the MasterType directive on the Cart page allowing me to strongly type the master page, I can access the update method from the Cart page. There is a user control also named Cart that actually contains the 'clear cart' button so I setup an event on the user control also called UpdateNumberOfItemsInCart. I wire up the Cart control's event on the Cart page which then makes a call to Master.UpdateNumberOfItemsInCart();
So far so good except when I wrap the Cart control with an update panel the update to the cart count label doesn't happen.
[Code]....
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Mar 22, 2011
I am using list view to display the the data but i am getting an error like An item placeholder must be specified on ListView 'ListView1'. Specify an item placeholder by setting a control's ID property to "itemPlaceholder". The item placeholder control must also specify runat="server.Even i have specified the itemplaceholder id but no use still same error.
[Code]....
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Aug 18, 2010
I have been reading a lot about UpdateMode set to Conditional on multiple UpdatePanels on a page. It seems that when set to Conditional only the UpdatePanel affected by the event will refresh. It is not happening on my case and I don't know what am I doing wrong.
This is the scenario. I have 4 updatePanel all set to Conditional. I have external buttons that will call the Update method per each panel but the whole page refreshes when I click on any of the buttons.
Here is a sample code:
code]....
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May 2, 2010
I seem to be having issues trying to programmatically update one of the UpdatePanels on a page i'm developing.Basically what i'm trying to do is...
have one update panel on the master page (used to show summary info like errors and success message) and then a updatepanel on the content pages, all of which are conditional. where its not working (or i'm doing something wrong) is when i call a method in the master page to update its updatepanel to show the new summary message it does nothing.
i.e. (content page)
page_load()...
{
try
{
load content. [code]....
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Jun 10, 2010
I am having now two UpdatePanels on the same content page. One is a big UpdatePanel and another is a very small one. I can insert the little one content to the big one, but it means some info I don't need to update with Ajax at all will be init two, because of UI issues. What is better for performance? One big UpdatePanel or a small ones?
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Aug 4, 2010
[Code]....
I want to copy a placeholder to another placeholder, i know, i can't write somethin like this,
plh_footer = plh_header;
how can i do that?
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Jan 5, 2011
My Project is a normal web site, not a Web Project, and I am using VS 2005.
I am trying to define common Master Page Type in app_code which has an area to display error messages and the like. Very simple.
I added the following in app_code:
[Code]....
Also, I added the following in Master Page Source Declaration:
[Code]....
Also, I added the controls tblrowErrMsg and lblErrMsg as server controls to the Master Page.
Why I am doing this ?
This will allow me to display error messages from nearly any where inside the code in code-behined, app_code, and other core Class Projects (DLL).
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