Web Forms :: Dynamic Checkboxlist Exception When Adding To Panel When Using Master Page?
Aug 23, 2010
I am creating Dynamic Checkboxlist controls and adding them to a Panel. It works well when I do
not have a Master Page configure to this webpage. Once I have a masterpage congifured.. I get a "Object Reference not set to instance of object" error on the Panel_Control.Controls.Add(Checkboxlistnew) line:
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.
I seem to be having problems with something that I thought would be simple
I have
[Code].... [Code]....
and I get the error "object not set to an instance of an object" - I have moved it from prerender to load and tryed all sorts of things, but I get the same error.I am just trying to add a literal control to the masterpage from the masterpage code behind
I am working on a functionality of user right, in which admin is selecting the pages and the user and save it. so whenever that user will login into the system then he will be able to see only those pages which were selected and saved for him by the admin.
now for that i have created one page for the list of pages of the application and user list and i am storing them into the database. and then to hide and show the panels i have created the BaseWebPage in my application but here i am not able to get the master page to hide the panel and show only those which are permitted. i dont have much knowledge of BaseWebPage. i am working in framework 2.0 and i have links of all pages that i have shown in a master page in a panel.
I'm starting with ASP.NET MVC (1.0). I have a problem to resolve. I have developed a web applicaton (an application of articles like e-commerce) with a head (logo and menu). I have defined the head (logo and menu) in the Master page (site.master). Now, I must display the number of articles in the head in a field (like the number of articles in the virtual basket in the e-commerce). I can read the number of articles in the data base (in the controller), but i can't integrate it in the master page.
I need to add Meta tags, description and keywords in aspx page. My aspx pages are in master page and I have already added meta tags and description in my Master Page.
Now I want add in my other pages also so if someone search my site on GOOGLE it should look like same as this:
i have my master page with one update panel working like a banner, so when the timer do tick every 5 sec
the image change. That works fine, but i have an update panel in my index page, this update panel works with some buttons that change the text inside the panel when click.
Now, the problem.
When i click one button to change the text and the banner change, the text returns to his default text. The update in master page is affecting the update on index page.
I have a simple SiteMapPath in my master page like below. <asp:SiteMapPath ID="SiteMapPath1" runat="server" SkinID="SiteMap" Visible="true" /><br /> Also I use Web.sitemap and include all static sitemap pages. In my Web.config, I have this: <siteMap enabled="true"/> Currently, many pages uses this static site map for many projects and I'm not supposed to update the master page, but I need to have dynamic site map so that I can add query strings for each navigating pages.
I'm planning out a new website, using a master page. Now the site calls for two different layouts throughout. The home page will have a big image slider in jQuery. It's almost like a landing page. All other pages in my site will be without this slider, and will just have a bar with a heading on it.
Now my question is, can I use the same master page for both layouts by setting up certian areas of that master page into Panels that I can toggle the visibility on? The HTML is modular, so technically I can surround the slider div with a panel and depending on the visibility property, display it.
The bit I am wondering about, is, can the master page panels be toggled from the individual pages that use said master page?
I know I can probably put some code in the Master page to detect what page the user is on and toggle the visibility accordingly, but ideally i'd rather use the previously mentioned method.
First i had taken Default.aspx Page .after that i added master page to my project.Now i want to include this master page into default.aspx page I was mention master page attribute in Page directive of defult.aspx.
Now problem is i am not able to Get the attribute of <asp:contentplaceholder>.
I am having menus on the left side of the master page.I am also having the html pages related to the menu link. Based on the menu selection i would like to show the corresponding html pages as a content to the right side of the master page.
The html pages shoud need to be shown just like the other webforms are shown on the right side of the master page pased on the menu selection.
i'm trying to add a CSS class to a control in a nested master page.what i usually do with a master page is adding this to the nested page:
[Code]....
after i give id=left_a and runat=server to a control in the master page.but when i tried to do it from a page nested in a nested masterpage, it gives me an error.what i want to do i add a class to a control in the nested master page from the nesting page.
I have a masterpage in that i have few static control , tree and menu , i am generating the tree and menu dynamically , that works fine , after that when i chlick any node, the content page lode perfectly ...but the dynamic control in the master page ( tree and menu )disapper , but all the static control are there , what might be issue , i am generating the tree in master page load event ,
[Code]....
this is my code in page load event , i am using VS2005 , IE 8, windows XP
iam developing master page in that master page panel control is there under another panel control is there second panelcontrol is not visiblemy code like that
I have a web application that contains a MasterPage and a Web.sitemap file for the navigation. I am loading the navigation into an <asp:Repeater> control and I associating it with <asp:LinkButton>; something like this:
[Code]....
I have two issues:
Setting Session Variables: I'd like to set some session variables when any menu item is clicked.Dynamic Url: Once the Session variables are set, I'd like to set the url dynamically after the Session variable is set The thing is, I'd like to use the same aspx file for two different menu items, and I'd also like to set some session variables at the time of menu selection. I am aware that I cannot use the same url when I define the url in the web.sitemap file.
I have Web Application which uses the Logged In User (Authenticated User) to query his Profile Data from Adabas/Unix using OLEDB. The application provides the user with about 21 different pages (Basic Info, Employment Info, Education, Dependants, Financial Info ...).
The web application has a master page, and each profile data page is based on a User Control loaded in the Child ASPX Page.
The Data Layer of this Web Application will have to undergo major modification, since we are migrating our legacy applications from Adabas/Unix to SAP, the development Team has prepared web services to query for the same Profile Data from SAP using Web Services. Now, we have to modify the web application to consume the web services instead of using OLEDB to query Adabas.
Since we are in the testing phase, and we have only very limited data in SAP, I have to provide temporary control to allow test query the Staff Profile for a Specified User (instead of the Authenticated User) and to select the Source:
1. SAP, or
2. Adabas.
So I am thinking to add the following "Control Section" in the Master Page:
[Code]....
See image below to clarify:
[URL]
Becuase the users defined in SAP are based on Dummy Data, so we want to allow the user to Enter the required SAP User, and he will select "SAP" from the Drop-Down-List. In this case, the program will query for Staff Profile Data from SAP for the specified "Staff ID" (txtSAPStaffID) instead of the Authenticated User. But, if "Adabas" is selected for the "ddlDataSource" then, it will default to the Authenticated User.
I noticed that when I am following the above technique, if I press "Go", the Staff Profile Data Page is disappeared, and when I navigate from page to another, the selection on the values entered in the "Control Section" in the master page are reset to default value, ie, the last values are not maintained.
Questions:
1. What is your feedback on the method I followed above ? Any other recommendations? I need very simple method.
2. Why the data page (the child page of the master page) is cleared (disappears) when I press the Go button ?
3. How to maintain the values selected when I navigate from one page to another ?
this is how I pulled the value back to fill in the text box in the table. With no master page.
TextBox tb = (TextBox)table.Rows[i].Cells[j].FindControl("TextBoxRow_" + i + "Col_" + j); tb.Text = Request.Form["TextBoxRow_" + i + "Col_" + j];
Now that I've added a master page to this things apparently have gotten more complicated. This won't fill the value for the textbox in the table cell that I want. I know the value still exists because if I do this
Request.Form.GetValues("ctl00$MainContent$TextBoxRow_" + i + "Col_1")[0]
Has the value that I want to put into that text box. I know the text box gets created because it's there when the page refreshes. But I can't seem to find that text box so i can put a value in it.
Now I want to add another item to checkboxlist which is price of each item that is coming from database. How can I attach third value "Price" to each item of checkboxlist. Do I need to add attribute or what to each item ?
I am feeling that I have terribly wrong somewhere. I was working on a small asp.net app. I have some dynamic themes in the heme folder and have implemented a page base class to load the master page on the fly. The master is having the ContentPlaceHolder like: <asp:ContentPlaceHolder ID="cphBody" runat="server" />
Now I am adding pages that are derived from my base class and added the form elements. I know, Visual Studio has problem showing the page in the design mode. I have a dropdown box and wish to add the event of onselectedindexchange. But it is not working. the page is like this:
<asp:Content ID="TitleContent1" ContentPlaceHolderID="PageTitlePlaceHolder" runat="Server"> My Page </asp:Content>
This works by placing the content page specific title on the page ("My Page" in this example). Now I want to add a global prefix to the title in my master page for the site name. So I want: