Access Content From Code Behind?
Sep 29, 2010
I am an experienced web developer but sometimes ASP.Net is tricking me. I have a master page in asp.net. Then I have a page based on that master page (home.aspx). Now in home.aspx.cs I want to access the asp:content controls to add controls programmatically.
Aspx looks like this:
<asp:Content ID="leftCol" ContentPlaceHolderID="cphLeftCol" Runat="Server">
<asp:PlaceHolder ID="phLeftCol" runat="server">
</asp:PlaceHolder>
</asp:Content>
I would expect that I can reference "leftCol" from my code behind. But it's unknown there. For testing I added my own placeholder "phLeftCol". I can reference that without issues.
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Jan 13, 2011
Is there any way to access code behind for controls in content pages??
Actually i've a content page and i've added some controls(say button) to it. Now, if i want to write some code on button_click , how do i do it? because i'm not able to get to the code behind for these controls. I can only see Page_Load in the code behind aspx.cs page
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Apr 21, 2010
I have a usercontrol on the content page. I'm trying to access this usercontrol's hiddenfield.
I was able to access it before applying the master Page. But once I changed the page to a content page , the value in the hiddenfield is showing empty.
alert(document.getElementById('<%=hidLat.clientID%>').value) is showing the value.
I have a property PickupHidLat defined on the ascx page and I'm using this property to access hidLat value on the content page.
objBLL.Latitude= DirectCast(uc_MyClient.PickupHidLat, HiddenField).value
why is the value null on the content page?
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Dec 1, 2010
I have a Master Page which controls the styling of my site. In the Code Behind, there are a few class instances instantiated as well as variables. These classes validate user access and then create user objects
I have a few Web Content Forms which carries out instructions based on the user objects. So far it seems that on each Web Content Form I have to create new instances of the classes found on the Master Page. This is doubling my work for every Web Content Form.
Is there anyway I can inhereit Classes and objects instantiated in the Master Page Code Behind?
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Aug 12, 2010
I have a code to link to sql can anyone give me the same code for microsoft access....
try
{
int videoID = Convert.ToInt32(Request.QueryString["ID"]);
SqlConnection conn = new SqlConnection("server=WEBDESIGN-PC;database=Credentials;uid=sa;pwd=Azeem;");
conn.Open();
SqlCommand cmd = new SqlCommand("SELECT * FROM videopath WHERE videoID=" + videoID, conn);
SqlDataReader dtr = cmd.ExecuteReader();
dtr.Read();
FlashVideo1.VideoURL = Convert.ToString(dtr["Filepath"]);
Label1.Text = Convert.ToString(dtr["Filename"]);
conn.Close();
}
catch (Exception ex)
{
Label1.Text = Convert.ToString(ex);
}
finally
{
}
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Oct 6, 2010
My project has the following repeater menu shown on the Master Page. I need this menu to remain hidden until the user logs in. How do I access from content page?
[Code]....
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Mar 23, 2010
I am using the following code to insert data into an Access Database. Also this is the sqlcommand.
UPDATE TASKS Set Notes="bunch of html code" WHERE APPLICATION="SomeApp"
However I get an error. How can I input data regardless of what is in the command area?
'Dim ConnString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|AddCol.mdb"
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Mar 25, 2011
I have been asked to support a legacy app and I can't get access to the code behind files. I need to add a new feature that gets a list of items from the database on page_load, what way would adding an "in-page" page_load affect the compiled page_load?
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Dec 10, 2010
Access client side code from code behind. Is there a way to do this? How can i do this?
I have an object embedded on my web form. I need to access this object and change its properties at runtime.
How can i do this?
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Jan 12, 2011
maste page
<%
@
Master
Language="C#"
[Code]....
my problem is that i can not access text box length form above code
how to access the length
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Apr 9, 2010
I wanted to have the Editor control without the toolbars and found this guide: [URL]
The guide shows you how to make your own class derived from the Editor class, and gives some overload functions to remove the toolbars, and only have the bold and italics button.
I made my own "customEditorSample.aspx", and was able to reproduce what was in the guide.
However, in customEditorSample.cs, when I try to access the Content property of the control, it won't show up in the intellisense.
When using the regular Editor ajax control, I can save the contents to a label by doing:
Label1.Text = Editor1.Content; and "Content" would appear in the intellisense after typing the period after Editor1.
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Sep 6, 2010
i want access in my variable of masterpage from content for change language of my site ;
i define a int in my masterpag and want write a quary for show data from database
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Apr 12, 2010
I have a textbox on a masterpage called txtNotes
I have a button on a content page called btnNotes
I am trying to access the txtNotes textbox on the MasterPage using the following code and I get and error saying "Object reference not set to an instance of an object.
[code]....
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Feb 25, 2010
I have a master page with a ascx control I use for a header. There is a label in HeaderControl1 I need to set from the content pages. I was able to make the changes in the master template as a tes by just calling the control and accessing the property.
HeaderControl1.txt = 234
[Code]....
[Code]....
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Nov 8, 2010
how to code to view pdf content in asp.net.
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Aug 16, 2010
I am writing a webpart and was trying to update the browser title... so, I went into mywebpart.ascx added the following:
<asp:Content ID="contentPageTitle" ContentPlaceholderID="PlaceHolderPageTitle" runat="server">
<%= SPContext.Current.Site.OpenWeb().Title %>
</asp:Content>
I then got this error:
Content controls have to be top-level controls in a content page or a nested master page that references a master page.
So, I am trying to do it programatically in mywebpart.cs by doing:
Content content = new Content();
content.ContentPlaceHolderID = "PlaceHolderPageTitle";
I now need to input this piece: SPContext.Current.Site.OpenWeb().Title
What property in the Content control allows me to do that?
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Mar 9, 2010
Here's the scenario: A class based on System.Web.UI.Page has been created. A number of content pages derive from this class. All of these content pages use the same master page. The content pages define controls which need to access things on the master page (in code-behind). This is fine - no problem. In particular, each content page has its own data grid. The grid on each page has the same name, so that common code can reference it. In fact, some event handling for the grids on each content page is identical, so would like to factor that code to the base class. Interestingly, I can actually define the event handler entirely in the base class, with no stub in the content class at all, because the wire-up of event handlers uses the event-handler name defined in the grid, and that name happens to be found in the inherited base class. All good and dandy... very cool in fact. The problem comes when the code in the base class needs to access any of the common elements from the content page's master. Remember, the master is the same, and I know the type of the master. I would like to do something like this in the base-class code:
((myMasterType)this.Master).PropertyofMaster=xxx;
The problem is, that myMasterType - the type of the master page the content pages are using - is not available at compile time, at least not from a class definition for a base page. I've found articles that claim that the class name of the master is available - and it is, but not from a separate class. I CAN see it and compile with the master's class name from, for example, the code behind of the various content pages. But the actually class simply isn't available, it seems, from a pure class (the base page class). Judging from other times this question has been asked, here are common misunderstandings offered as solutions: 1. Use a page directive to declare the master type. This is not even vaguely a part of the problem, as the issue is not code in the content page, but in a separate base class which content pages inherit from. That base class is a pure class -- no .ASPX file at all. 2. Pass a reference to the master object from the content page to the base class. This can be done, but is pointless, because I can already get it, using "this.Master" from the base class! But because the type of the master is not available at compile time from the base class, it can't be passed from the content page either - unless it is passed with type MasterPage, thus losing all the properties/methods publically defined in the specific master page class. 3. Move the base page class out of the App_Code folder because the app_code folder is compiled before the other classes, and thus before the master page class. Doesn't work -- put the master page class file right in the same folder with these content pages and their master page, and the master page class is still not available at compile time from within the class. Re-summarized: Base page inherited by content pages. Content pages all use a common master page. Want to access the public properties of that master page from the base page, at runtime. Barrier is that I can find no way from within the base class to cast the master page object to the actual master page subclass being used.
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Jan 12, 2011
I have functions in a Master Page that I want to access in content pages. How do I do that?
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Jan 7, 2010
There are 2 master page in my web project:
the first one is MasterPageA.Master which has some controls; the second one is MasterPageB.Master which is son of MasterPageA and it has some other controls.
There is also another page, named Default1.aspx, which is son of MasterPageB.Master.
I need to access to a label control put in the Content part of MasterPageB.Master.
I tried to fit the code that I usually use for one level (Master-Son) found at this page and I've write in Default.aspx.vb this code:
Code:
[code]....
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Sep 9, 2010
I struggled with some javascript issues, and discovered that the problem seemes to come from a failed ajax control access. Here's my problem: I have a master page and a content page.In my content page, I have an accordion with 2 panes. 1rst pane: a textbox and a validation button; I want the button to fire javascript function without reloading page (using "return false;");
In my master page, I put my ToolkitScriptManager.
In my content page, I put my script containing the functions.
The problem is that it seems like I can't access the accordion control in my js functions, whereas I can access my textbox value. ere is my source:
[Code]....
All I want is, that when clicking on button OR changing to 2nd pane, it checks the textbox (function check()), if fails, then doesn't open 2nd pane, stays on 1rst, if not, then closes 1rst and changes to 2nd pane.
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Nov 17, 2010
I have a gridview and a lable on a page...
In the gridview I have a column called "% of Points" and another column called "total of pot". Outside of the gridview I have a label called (label Total) and it has a total amount of £6335.
The idea is that as each gridview row is created, it will check the amount in the label and based on the % amount in the % of points, it will work out the total of the pot (£6335) each row has. So for example, paul would have £1583.75 in his total of pot (25% of £6335 = £1583.75)
Anyone know how I should go about doing this? I presume I'd need to do a find control for the label, but not sure where to go from there.
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Jan 22, 2011
I am running a Access Database and I have a Intranet site, Administrators can post News to a table in the Access database and Intranet users can see the news when they go to the Intranet site.
Any important/companie news is posted to the Front page and the user can access the news vie a link.
BUT;
if there are more than one post when the user clicks on the link they can only read the first post.
When they click on the 2nd link the first post opens but the Activity ID from my table in access changes!
The Activity Id changes but the page content does not, I am using form view on the Activitydetails2.aspx to view the news table
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Dec 17, 2012
Today I got a strange problem,that is I am unable to access master page controls in its code behind,I am wonder because,I can able to access master page controls in their code behind of other projects/applications's master pages.
I know we can acess like this Label lblText = (Label)this.FindControl("lbluserName"); in that situation but I need to access div controls which are set to run at server.
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Aug 18, 2010
I am trying to modify an xml file from my aspx code. The file is in another directory from my project like in D:folderfile.xml When publishing my code and running it I am receiving an error as not to be able to access this directory, access in denied. Which user account shall I add to this folder in security option to be able to modify it. I tried adding IIS user but it does not seem to work.
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Jan 9, 2010
I'm working on a master page, I right click and add a content page, However now I am missing the code behind. So if I make a default2.aspx there is no default2.cs. I can't figure out what I did, It was functioning perfectly before.
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