Custom Server Controls :: Base Not Initialized - Missing Something?
Aug 31, 2010
I have an ASP.net control that contains a grid (protected member variable). Grid is populated from a function in the control. I have derived a new user control from this control without any control in it. I added additional functionality to populate grid and called base class function to do further operation on the grid. When I run my code, I get the null reference exception on grid object in the base control. I missing something in control inheritance? at what point do inner controls get created?
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Mar 31, 2010
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Feb 24, 2011
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Jan 3, 2011
Hope this is the correct forum for this question. I am using VWD 2010 an have a web project and get the following error upon execution:
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My code is as follows in the .cs file:
[Code]....
[Code]....
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Apr 4, 2010
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Mar 22, 2011
I am trying to build a custom composite control, which allows me to add custom content to each child control. It's a similar concept to what you have with a GridView and TemplateColumn. The markup used to place the control on the page would end up being something like this:
[Code]....
I have the code below, which allows me to put that markup on the page without throwing any errors, and it renders all the correct HTML, except it doesn't render the contents of the ColumnTemplate. I have replaced the Render() code with a comment because it's quite long winded and doesn't add anything important here:
[Code]....
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Aug 20, 2010
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Jan 12, 2010
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namespace MySite.Web
{
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protected override void InitializeCulture()
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using MySite.Web;
namespace MySite.Public
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May 17, 2010
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[Code]....
My TopLeftPane class
[Code]....
My page code on page load event
[Code]....
When I run the page, Header title always getting null. This is a just sample code. I will have more than 20 classes so I dont want to write a code in main class to render whole control.I hope all of you understand my problem.
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Jul 28, 2010
Case : a templatefield Text Box created by class TemplateHandler and added to the composite
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Oct 22, 2010
I have to use inline code for an aspx page and I need to use a custom server control that is defined in the same aspx page but the control does not get processed as a server control. it gets returned as is as static html tag.
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Feb 8, 2010
I'm workng on a new, green-field ASP.Net application. We're implementing a base page which all pages will be, er, based on. The application will be running under Integrate Windows Auth, so I'll have the user's account details. With these, I'll be going to several databases (in which the user will exist) to find out what roles they are assigned to in each db. I'll be holding the role yay/nay in a bool array, and key into it via an enum.
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{
get
{[CODE]....
But, I'm sure you'll agree, it looks sucky...If there was a CheckSecurity method on the base page, it would have to take a concrete DatabaseRoles object, but also an enum of which role to check, which would also look sucky. And finally, there would be a requirement at a later date to add more databases and their security settings...
I'll add code tomorrow if required... :-s
I dunno, I'm not that thick, but I do have a hard time sometimes binding all this together...
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Sep 13, 2010
How would I add a (dropdown) list of available values for a custom server control property?
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Oct 19, 2010
I am creating a custom server control, and I am wanting to include a JavaScript file in the dll file when the control is built. I have tried suggestions from the following websites:[URL] But after following the directions, If I use firebug to see what errors show up, the JavaScript functions that are being called all say "goNext is not defined" which leads me to believe the JavaScript file is not being added correctly.
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In my AssemblyInfo I have the following:
<Assembly: AssemblyVersion("1.0.*")>
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Oct 4, 2010
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I've build a custom server control inheriting from WebControl. Basically it is a kind of button. All is working perfectly except one thing: the PostBackUrl is inoperative.
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Sep 29, 2010
i registered an image in AssemblyInfo.cs like this:
[Code]....
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[Code]....
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[Code]....
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May 15, 2010
I know that how to create custom control and add custom property.
I want to create property like DataSource to my custom control.
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Apr 5, 2010
I want access remote server data base for my asp.net application my connectin string is
<add
name ="Constr"
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Feb 24, 2010
I have a control inherited from datalist because I want all the same functionality but with a couple of extra properties.
I have a method that goes off and gets the data inside the control (instead of using a separate datasource ID). It's reading it from XML into a datatable.
If on the code behind of the aspx page I put the control on I put a thecontrol.databind() in the page load, all works well.
However I'd rather not have to do this, instead the control should bind itself.
I gather it's something to do with the order of events but I'm not sure what to do about it.
I don't want to reinvent the datalist wheel, just add a couple of properties and get it's own data
Sample code (some code removed for clarity)
[Code]....
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Jan 8, 2010
i am making a custom server control. I have embedded images and javascript in class library.But images are not displaying when i use that control in aspx page.my code is
[assembly: WebResource("ClassLibrary1.mail2mohanpyare.skins.kama.icons.png", "img/png")]
and how can i convert ckeditor in class library.
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May 27, 2010
I'm having a dumb problem that is killing me. I have created the simpelest custom server control in VS 2008 c# called MyMsgBox. On the ASP page I put it in and register it. But, in the .cs file, when I try to call one of its functions I get the compile error that it is not found. The funny thing is that intellesense has it in the list and all of the functions with their given arguements. At the top of the .cs file I am using the namespace. The code for the custom server control is in the App_Code folder.
Also when I remove all refrences to its functions, the code compiles and when debugging the constructor for the class MyMsgBox gets hit.
<%@ Register TagPrefix="cc1" Namespace="CustomServerControls" %>
...
<cc1:MyMsgBox ID="msgBox1" runat="server" />
Task.aspx.cs
...
Using CustomServerControls;
...
this.msgBox1.confirm("Would You Like to add a new Task for this PO/Contract? ", "hid_f"); Error Message: 'Tasks' does not contain a definition for 'msgBox1' and no extension method 'msgBox1' accepting a first argument of type 'Tasks' could be found (are you missing a using directive or an assembly reference?)
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Aug 12, 2010
I want to use an image inside a Custom Web server control! Do I need to use Web.resources ? if so , how to do ?
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Jan 13, 2010
I built a base controller class inherits from Controller class to add some custom behavior to all controllers which will inherit from this base class.
My issue is when I try to access HTTPContext and Session objects in my custom base class, they are always null.
Am I doing something wrong or need missing something?
My custom base class definition:
public class ApplicationControllerBase : Controller
controllers classes definition:
public class HomeController : ApplicationControllerBase
using ASP.NET MVC 1, .NET 3.5.
UPDATE:
It seems the issue is I try to access HTTPContext in the constructor while HTTPContext is not ready yet, I tried it in the OnActionExecuted event handler and it works fine.
My question is what is the best place to access Session object in my custom controller class, that will guarantee executing my code with all controllers.
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