Web Forms :: Update MasterPage Content Via AJAX
Feb 17, 2010
Greetings. I have a master page called 'site.master'. I have a web form called MyForm.aspx that uses site.master. I have a Label control on site.master called "lblMessage". I have an UpdatePanel that contains a Button control called "btnSave". When the Save button is clicked, it updates the database via the data access layer and then should display whether or not the save was successful. I want to set the lblMessage.Text property (on master page) to display this information. I am currently implementing a method that finds the control in the master page and sets its property and this works successfully (verified via debugging), but the problem is that, because the button is in an UpdatePanel, it is not displaying the text for the lblMessage Label on the master page. In short, any ideas on how I can set the Text property of a Label control in a master page via an AJAX call from a button inside an update panel on a content page?
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Nov 22, 2010
is it possible to refresh the contentplaceholder of a masterpage only with ajax? I have a masterpage witch populates a treeview and a menu from a database. The treeview has links to created contentpages but when i click the node the whole page refreshes.
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Mar 1, 2010
I have seen alot of posts on the inetrnet with the solution to mainatin gridview scroll using an Ajax Update Panel.
Every solution I have seen though seems to have the same problem..as explained they dont work in content forms with master pages...at leat no solution I have seen has worked.
Does anyone know how to resolve this problem of using update panel to maintain gridview scroll with masterpages?
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Aug 24, 2010
I consider myself very knowledgeable in web UI development, and over the last four years I have learned a lot about ASP.Net Web Forms, but I still haven't figured out a good way to update sections of a page via Ajax. I have done this several different ways which basically involves a user control loaded by some sort of .aspx page or handler. This works well, but not very generically and usually runs into ViewState issues with anything that is even moderately complex.
I would have jumped to UpdatePanel's sooner, but Microsoft's JavaScript code is total crap. Does anyone have any good strategies to load/update/refresh sections of a web form without using UpdatePanels? Or does anyone have any tips with using UpdatePanels to get around some of the front-end code crappy-ness?
Update (clarification)
Here is an example situation of what I am trying to do to be more clear. On our homepage near the bottom of the page we have some tabs with different content. Each tab's content body has different content geared to some different user type. Of the thousands of homepage visitors we get a day maybe a dozen click on any tab.
Despite this data our managers still would like to have the tabs there. Because each tab body has a lot of HTML content in it, I want to load the content of the tab when the tab is clicked. The solution is obviously to use ajax; however, where do you put the HTML/Controls to load the HTML when the tab is clicked.
I could put each tab's content in its own apsx page (e.g./home/tabs1.aspx), but then we couldn't easily embed the content in the page initially if we wanted to. I could put the content in its own user control and create a HttpHandler or page that loads it, but this leads to view state issues on more complex pages.
I could just hard-code the HTML in a function and then set it a literal or return the HTML in a handler when an ajax request calls it. Each of these solutions work. Some are more than others (the third one is terrible separation of concerns, although I have seen it before).
UpdatePanel's provide the best solution thought because they let you put the content in the correct part of the markup with out a separate file. The problem I have with UpdatePanel's is they require you to use Microsoft's javascript library. Are there any solutions that work like UpdatePanel's without using UpdatePanels?
Box on page that has content when loaded, but updates every 30 seconds Big masthead navigation menu's that I would like to load only when a user hovers over a section You have a form that displays in a lightbox when a user click's a link. (this can cause viewstate issues)
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Oct 25, 2010
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Oct 29, 2010
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[Code]....
Second way:
[Code]....
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Jul 28, 2010
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Feb 3, 2011
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[Code]....
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Apr 15, 2010
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Nov 4, 2010
I am having a slight issue with grabbing data from my masterpage into my content page (as a whole).
I have generated a public property for the my textbox and the contentpage can see this public property. But it comes across empty (even from within the masterpage). Now I guess the problem is with the property itself (possibly). It also shows as empty when I response.write it's value to the page.
Even when I call the value of the property in the masterpage it comes across as empty. The way I have this setup is that a textbox named pageTitleField has it's value updated from an iframe. All is working well and the textbox has its value updated correct upon iframe content changes. This is great. Now I just need to pass this textbox value into my content page and then set it as the document title.
see my code thus far.
My MasterPage
[Code]....
My MasterPage CodeFile
[Code]....
My ContentPage
[Code]....
My ContentPage CodeFile
[Code]....
I know the public property is being seen from the content page because if I just do a Response.Write(Master.GrabPageTitle) I see System.Web.UI.WebControls.TextBox appearing as the output of that property. So it appears hat the textbox value is not being captured in the public readonly property.
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Jan 12, 2010
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Name: Amir
LastName:Zandi
Username:amirzandi
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[code]...
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Apr 12, 2010
I have a textbox on a masterpage called txtNotes
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[code]....
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Feb 25, 2011
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Public Sub DisplayDataFromPage(ByVal message As String)
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[Code]....
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Feb 14, 2011
I have the following problem:
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I will attach a printscreen!
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Mar 11, 2010
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Dim lblErrorMessage As Label lblErrorMessage = CType(Master.FindControl("lblErrorMessage1"), Label)
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Oct 20, 2010
I was working on this last week and took a break from it to 'regroup' and start over. Here is what I'm trying to accomplish.
1. have a web form with dropdowns to allow the user to select font sizes, colors, background image, etc.
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Oct 27, 2010
1) I have a HyperLink on a master page:
<asp:HyperLink ID="HyperLink4" runat="server" ImageUrl="~/icons/NewProductsButton.jpg" NavigateUrl="http://www.ABC/DefaultNewProducts.aspx" >New Products</asp:HyperLink>
2) I have a content page TextBox with data equated in the C# code behind:
protected void Page_Load(object sender, EventArgs e)
tbxCategoryID.Text = CategoryCode;
... sample data "Furniture1135" for TextBox.
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[URL]
[URL]
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Jul 3, 2010
I have a MasterPage.master and default.aspx content page From the contetn page I'd like to edit a style property of an Html tage that is in the MasterPage.
[Code]....
But error:
Object reference not set to an instance of an object.
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Aug 19, 2010
On my master page , I have "Search textbox" and "Search Button".
On My content page , I have a "User Control" which has a "GridView".It shows some data about Vendors.
Also, on this User Control's Page Load, i have code written to display all vendors in GridView.
Now, when user enters Vendor Number in "Search textbox" , and hits "Search Button" , i want to handle this event inside my User Control.
How to do this ?
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