When my custom control is dropped onto a web page at design time, I want an associated HTTPHandler reference to be automatically added to the project's web.config file if it's not already there. I see some other controls do this, such as the ReportViewer control so I know it is possible. But...more >>

I have a page that has several controls on it and the controls are shown or hidden during postback. I show and hide them using the visible property. When I use 'view source' in Internet Explorer I always see the source of the first version of the page, with the controls rendered that where ren...more >>

I have a page with several controls on the page and all except one are hidden. This page works like a wizard by hiding and showing controls has the user clicks next. The control are hidden by setting visible=false in the code-behind, so they are never rendered. My next button validates the pa...more >>

hi, I've a problem in accessing user controls when I deploy the application in the production server.. I'm receiving the following error... Ambiguous match found. Source Error: Line 1: <%@ Control Language="c#" AutoEventWireup="false" Codebehind="CommViewEvents.ascx.cs" Inherits="HydP...more >>

Hi all, I'm working on a control that has to inject some markup into another control at the end of rendering. I'm trying to use SetRenderMethodDelegate() to make this happen. Unfortunately I can't seem to get this to work. BindingItem.ControlInstance.SetRenderMethodDelegate( new Rende...more >>

I am having problems retireving the file information when you place an asp:fileupload control inside an Atlas UPdate Panel. Has any body got a solution to this problem?...more >>

I everyone, I have created User controls (ascx) that are display in an hierarchical way. Let me explain a bit what I've done so far: Let's say a customer make a request, this request will contain at least one result. This result will have list of different member class. Within each list w...more >>

I have an ASP .NET web application and I am using the calender control to display the month view and some events that are scheduled to happen during the month. Whenever the user selects a month, the page re-loads to show the update calender view. I would like to make it as seamless as possible so...more >>

Hi, I am writing a custom control with the Render method. I am writing 5 html input radio buttons in a group. I don't want postbacks but I need to add the Isvalid support (Inherits WebControl.BaseValidator). Should I render these htmlinput controls another way other then writing the tags...more >>

I am using the .net calander control and it return the date in MM/DD/YY. Where the server is setup DD/MM/YY. Can am one tell me why date would come out diiferent to the server regional seting? Where does the it get the date format from and how can I force it to be DD/MM/YY format? ...more >>

Hello all, I've created a custom control that inherits CompositeControl for the purpose of extending the gridview and using dynamically created dropdowns to filter that gridview. My main problem is persisting the dropdowns' values across postbacks, so I thought that control state would be p...more >>

hi, I've a problem in accessing user controls when I deploy the application in the production server.. I'm receiving the following error... Ambiguous match found. Source Error: Line 1: <%@ Control Language="c#" AutoEventWireup="false" Codebehind="CommViewEvents.ascx.cs" Inherits="HydP...more >>

I am trying to extend the Page class with a new BasePage class containing common elements required by all of our web pages. By itself this is a very simply task, but whenever I add properties to the BasePage class they appear in the Intellisense tool on the code-behind but not on the property...more >>

I have a templated databound control that works fine in run time. However, in design mode, I'm having a cosmetic problem. In my control designer I overrided the TemplateGroups property to allow editing the templates graphically. I also set the SupportsDataBinding = true in all the template...more >>

Hi, I come from classic asp and i need some advice for this application. It's about a computer reservation system in a school. I want a page where a student can see his own made reservations, the number and the date of each reservation, and where he can check a checkbox beside each reservation...more >>

In Dino Esp... book he talks about how user controls are the way to replace the old file include method. Then he goes on to say that if it is a large site it becomes a problem because every time that you change the interface of that control you will have to recompile all the pages that referen...more >>

Hello, Is it possible, after the control finishes all the rendering part, to get the html that i just created before moving to the client, on the code behind for example? Thanks. ...more >>

hello, ive got a usercontrol that has some textboxes, a button, and a handler routine for its button_click. when this usercontrol is dropped into a page via the designer, it functions as expected -- when the button is clicked its event handler loads up the routine and i do db stuff. however...more >>

hello, i have a user control that works great, when its used as a design-time controls. however, when i try to use it as a programmtic control, im running into troubles. the control is pretty simple: it has a textbox, and a grid. in my webform, on button_click i call one of its methods to d...more >>

is there any way to build something like a listview control for an asp.net web page?? I really like the functionality that a listview has. Anybody know how to do something like that? thanks...more >>

I'm trying to do the following: <ctl:Control1 id=a1 runat=server> <ctl:Control2 id=a2 runat=server Text="temp" /> </ctl:Control1> Both controls are simple custom web controls. The problem is that the inner control is not being rendered. I read in MSDN that I have to add [PersistChildre...more >>

Hi, I've a requirement in which I need to show a powerpointf file in a web page... How can I acheive this? How can we show word documents or powerpoint files in web pages in asp.net?...more >>

Hi, I would like to know if it's possible to do something like the following: <ctl:PermissionControl UserName="johndoe"> <table> <tr> <td>Hello John!!!</td> </tr> </table> </ctl:PermissionControl> I would like to check the UserName property on the ser...more >>

hi, Is there any way to add eventhandler to custom usercontrol and could set it at webForm? i can add eventhandler on code, such as at Page_Load, add: MyControl1.SelectedIndexChanged = this.OnSelectedIndexChange; but, if i want to add eventhandler at webForm, like: <uc1:MyControl ...more >>

In many custom controls examples I see the following code: public string Text { get { return (string)ViewState["Text"]; } set { ViewState["Text"] = value; } } ...more >>

I know how to create a custom control by using the Render method. the question is, if I have 2 properties, for example: protected override void Render(HtmlTextWriter output) { output.Write("<input type=text name=" + this.UniqueID + " "); output.Write("value=" + this.value + " text=" + ...more >>

Hi, I have a very weird problem with a control that I'm trying to build now. I'm having two dropdownlists controls (ASP.NET) where the primary one hold the categories and is populated when the page is loaded, and the second one is populated depend on the value selected in the first one. To...more >>

I create simple control. namespace DatePick { [DefaultProperty("Text")] [ToolboxData("<{0}:DatePick runat=server></{0}:DatePick>")] public class DatePick : TextBox { [Bindable(true)] [Category("Appearance")] [DefaultValue("")] [Localizable(true)] public string Text { g...more >>

I want to dynamically add a stylesheet using <style type="text/css"></style> tags. The code that will use this stylesheet will be shared, so I will not have control over what the user does as far as stuff like adding runat="server" and id="someid" attributes to the <head> tag of their .aspx ...more >>

Hi folks, I'm developing a WebControl, that has got a property that's supposed to return a collection of data. Whenever I try to populate the mentioned collection under the visual designer, the items I add to the collection are not displayed in the .aspx file. Here's what I would like to have...more >>

Hi all, I am trying to have a collection serialized to a property of the parent control in HTML. The collection items are controls found in the page. When the designer is being loaded, My TypeConverter.ConvertFrom is called. The problem is that ITypeDescriptorContext context is null. ...more >>

I would like to develop a Web User Control where the user can type som text eg. e-mail, number or plain text. I would like a public property where the user can choose which kind of input the control contains. How do i limit the choises when the control is inserted on a page, that means i...more >>

I have a web usercontrol which contains a Text box and a Custom Validation Control On a page i have a Public String ErrStr When i perform validation i would like to add the validation result to the Public String ErrStr on my parent page. How do i do that ? Regards Keld Jakobsen ...more >>

I have authored a webcontrol that contains a SimpleCellCollection of SimpleCell objects. Both have custom typeconverters that handle viewstate de/serialization. When I click a SimpleCell in the browser, I get a postback event but I never sink the ImageClickEventHandler delegate. I have seen po...more >>

I have a custom control that has a bunch of properties on it. I added the DefaultValue attribute to it and it all seems to work fine with showing up in the desiger and all. My question is, how do I get at that default value at run time? If the user does not enter anything in the designer then th...more >>

Hi I want to create a horizontal menu on my website being built using asp.net2 with menu items based on the "role" of the user who logged into the system.Role iformation will be read from database... For ex: for a user with "Admin" role, i would like to show "Menu Item1", "Menu Item2", ...more >>

Cascading Style Sheet [.css] is such a hazard to your privacy. It allows others on the internet to see your monitor and files. It allows them to copy images on your monitor to their computers. It also allows them to copy files from your computer to their computers. It is dangerous. Avoid at all ...more >>