I am creating a web custom control by extending the existing DataGrid control. lets call it MyDataGrid here. I instantiated another class which is also drived from the DataGrid control in the MyDataGrid. the ViewState of the inner class get lose between page reload. is there anyway that I can ma...more >>

Hi, First of all sorry for my not perfect english. I've got listbox in my .aspx page where the users can make multiple selection. So, Users can select 7 items in listbox, I have to take value from items and pass it to stored procedure to delete 7 rolls in my table. Thats simple, but what if...more >>

Hi , I am trying to create a custom control similar to datagrid.Grid contain some thing like data column where i am able to add column during design time using VS.NET 2003 collection editor , but on clicking the save button the corresponding innercontrol is not return on the aspx page. But I...more >>

Hi Iam new to MS .Net technology just getting along with it....I created a custom control ,which takes in a query and displays the data in a tabular format....something similar to a datagrid. Since its a custom Control I drag and drop and use it in my Pages. I overload the render method of my Cu...more >>

is it possible? thanks TIA....more >>

I've made a user control (ascx and ascx.cs) that works fine if I use a session var to pass it value. However, I'd much prefer to set a property instead so I added a property. The problem is that when I try to access the property, it generates a StackOverflowException. See the snip from my source ...more >>

I've developed some templated controls and I would like to pre-process the templates before calling the instantiate methods. How can I get at the actual text of a Template from the reference held in my control? Can I change it? Iain ...more >>

I'm inheriting TextBox in my custom control...it has a property that is type TextBox and will point to two other TextBox controls on the form. This is working correctly, however at design time, the Property Browser displays a "+" sign when the property is set to a control other than (none). T...more >>

Is there a way to determine the order or priority of applying styles in a custom web control? For example, I have a control with default style settings for many features, and exposed public properties to change those settings as well. It is easy enough to set the value of the public property t...more >>

Using vb.net. Can anyone provide some insight or examples of reading a css file. I want to be able to read the name/value pairs for some classes. My asp.net app is using IE WebControls TabStrips which don't support css from a file. That makes is a chore to change all the tab styles when needed. ...more >>

Hi all, I have a composite control which only consists in a datagrid control for beginning. I create the datagrid control within the EnsureChildControls method and set the AutoGeneratedColumns to false My control exposes a method AddColumn(DataColumn column) which adds the specified colu...more >>

ASP.NET - C# (User Control) I have a drop-down as usercontrol. In the user control's Page_Init , the drop down gets populated. The SelectedItem.Text is retrived using property get The Value of the drop-down is assigned using property set. This user control is placed on an aspx page on...more >>

I have a DataTable with String-typed columns that looks like this: [Col1] [Col2] [Col3] "TextBox" "txtTest" "Enter Here" Strictly programmtically in my code-behind, I want to create a TextBox control on my page called txtTest with text inside already "Enter Here". How would I do th...more >>

I don't know how this is happening, but a dropdown control I have is resetting to the 2nd value on the list anytime a postback occurs. I have no initiation code outside of If Not (IsPostBack) I have EnableViewState set to true for the control - the control stays populated, it just is l...more >>

Can you add a user control recursively to itself? Imagine some kind of tree control, where every node is again a tree control. Each node is populated with a DataList containing the child nodes. I manage to add additional instances of the user control to the item template in the ItemDataBou...more >>

Hi, I've developed a custom web control with some properties. I want some of the properties to be bindable to a value that is defined in the application config file (Dynamic Properties). How do I declare such properties? Thank, Robert...more >>

Hi, I've build a custom control that's essentially a header for my web site. It's pretty simple, with just a property for an image source path, and a collection of custom objects for links. The custom class simply has properties for href, target, and name. The collection implements Collection...more >>

Hi. I have built a custom control for a collapseable panel. The panel has an image to which when clicked, fires a client side javascript function that shows or hides the panel using DHTML. This javascript funciton is registered to the page on render This works fine for me except that when a p...more >>

I'm looking for the 'right way' to save the state of dynamically created custom controls. Here's the scenario: Multiple instances of myCustomControl are added to a page programmatically at run time. Because they are dynamic, I have to recreate all myCustomControl's on every postback. For now, ...more >>

I want to create a custom webcontrol similar to the SqlConnection control, in that it is not actually drawn on the form. When you drop the control onto a form it automatically gets put in the little non-visible tray at the bottom of the webform. Is there an attribute or something that will caus...more >>

Hi all, I have to replace a bunch of controls dynamically (TextBoxes, DropDowns, etc). Any way to do this? The 'template' pages are made on asp.net with tables (not runat=server) and asp:textboxes, etc. So I need to do a loop on the controls of the webform, but alas! they are read only. ...more >>

Hi all, I'm trying to create a simple control that would take its inner controls and add separators like " | " between them. The inner controls will be declared inside ASPX like this: <my:Control ....> <asp:Button .... /> <asp:LinkButton .... /> <asp:Button .... /> </my:Contr...more >>

Hi, I'm trying to create a custom Linkbutton control by inheriting from WebControls [ToolboxData("<{0}:MyLinkButtonrunat=server></{0}:MyLinkButton>")] [ParseChildren(false)] public class MyLinkButton: WebControl , IPostBackEventHandler ..... I define my control in the aspx as: <Cus...more >>

I am building a composite control in C# that contains a textbox and a requiredfieldvalidator that I want to be able to add client side attributes to. If I use mycontrol.Attributes.Add(.....) the attributes are added to the span element in the generated html. How can I apply attributes to the ...more >>

I am new to ASP.NET. So I am trying to learn from the book I just bought. There is a simple example of how to build a user control which I religiously typed into the Notepad, but the results are not what was expected. Here's what I did. First, I created the user control and saved it in a file...more >>

I am trying to add a validate summary control to my composite control. I add it to the controls collection and all the other validation control stop working. My form is on the parent page and the composite control is embedded in it. The submit button is just an ordinary button which triggers an e...more >>

I've writte a custom control which has a property of type RotateFlipType ( an enum from System.Drawing). Anyway, in design time when I look at the property grid for an instance of the control the dropdown list showing possible values has duplicate entries and some missing ones !!! Does anyone kn...more >>

I've built a control whose purpose is to render a shopping cart based on templates and an Order object which gets passed to it. I'm keeping the order object in the Session object and therefore have no need to use ViewState for this control. Instead I create the ChildControls based on what is ...more >>

I have many panels into a container(it´s also a panel). I want to get the container´s id from the child panels at design time. When I create these child panels from code I can get the containerID easily: Panel panel = new Panel(); Controls.Add(panel); then: Panel container = panel.Parent...more >>

I've created a method for creating linkbuttons dinamically.It works fine if the method is in the webform but if i try to put the method in a different class it doesn't work: --- webform1 ----- This works: TextBox txt1 = new TextBox(); this.Controls.Add(txt1); this.Controls.Add(createLnkB...more >>

I created a web control that accesses a class that performs certain functions. I wanted it saved in viewstate so i do not have to reload the data that is in it everytime i re render the control. But when i save the class to viewstate i get an error that it not serialized. i went back to the class an...more >>

(Type your message here) -------------------------------- From: abhishek dave hi, I have a problem regarding dynamically loading of the web page. As I also want to dynamically load the controls onto the page(which is being dynamically created) inheriting the page for eg 'this is a clas...more >>

I want to build a templated control which will be the graphical representation of a complex object. So the object has a list of items (line items on an order) and some items can contain other items (specifically, some items can be custom CDs with individual tracks on). So I when I come to r...more >>

Hello i try do this. Class DemoBase Public Delegate Sub DemoItemEventHandler(ByVal sender As Object, ByVal e _ As DemoItemEventArgs) Public Event ItemCreated(ByVal e As DemoItemEventArgs) Protected Sub OnItemCreated(ByVal e As DemoItemEventArgs) RaiseEvent ItemCreated(e) End...more >>

Hi all I encounter a problem but don't know how to solve it. Here is my situtation: I have a web page, 2 user controls: A and B. A and B are dynamically loaded into the main page. In B there are 4 buttons, TextBox, object and classes,...There is one object I want to save all of its values...more >>

I am attempting to respond to the Click event of a button (WebControls.Button) that is programatically created by a WebControl. I want the event handler to be defined in the WebForm that is using my WebControl. I bind an event handler to the Click event of the button, but it never seems to get ca...more >>

ive made a usercontrol with some textboxes. ive added some required field validators to the textoxes. i made a page with a button and my user control. when i click the button, how can i make the validators check the textboxes ?...more >>

I want to set the datasource to a server control at run-time only (because the datasource is stored in the web cache). The following code I thought should do the trick, but Site is ALWAYS nothing. If Not Me.Site Is Nothing AndAlso Me.Site.DesignMode = False Then 'My Code for run-time only E...more >>

I can't seem to get the id of the child controls of my composite control. I can get the unique id but the id when I try to access it via the controls collection comes back null. Do I need to add a form tag within the control rather than on aspx parent page. Any ideas? Regards, Chris. ...more >>

Dear Colleagues: Thank you for taking the time to read this - I recently posted here with regards to what was possible with .NET. I have been working as a systems engineer for about fifteen years now. My "specialties" have been basically anything it took to get the job done, althou...more >>

Hi. I'm developing a custom webcontrol that have a property derived from BaseCollection that realizes a collection of particular web controls. When i edit the collection with the associated collection editor, it seems to work but the (databindings) property throws a NullReferenceException when i ...more >>

Control.DataBind() performs databinding for the current control and all child controls. How would I (within a Control subclass) _just_ perform databinding for the current control, and not the children?...more >>

Hi, I had built a composite control but I don't want to preserve control state automatically. I set the enableviewstate property of every sub control within the composite control to false. But it does not work, controls still preserve the state automatically. How can I set the asp.net con...more >>

Dear Colleagues: I am a systems guy who has been working with hardware, networking and basic scripting for ten years or so. I have been given the opportunity to attend ..Net classes of all sorts as part of the MSDN training track. I already have the MCSE track under my belt and that is where...more >>

I have a 3rd party component in my asp.net page. It has a Prerender event that I can hook. Within that event, how can I find the final HTML output that it makes? I would like to modify the HTML string before it goes to the page's rendered output. Thanks....more >>

Hi Friends, I'm building a web control. I came to a point that I have to persist a = property (especially TabIndex) in the control's tag when the control is = dropped on a Web form. I tried several methods but none of them worked. Here is one of the = methods I tried: <PersistenceMode(...more >>

I have a user control that need to have a hidden textbox. (I have some JS that needs to get some info out of it) If I make a standard textbox (<asp:TextBox ID="txtTest" Runat="server" />) in my control it works fine....of course it shows it on the screen It seems so simple...but how the heck...more >>

I built a webcontrol and within the control I build a collection of properties I would Like to store so I do not have to rebuild it everytime there is a postback. I store the collection in viewstate and get the following error when I run a page with my control on it: The Type 'myCollection' must ...more >>

Hi. I'm developing a WebControl that uses the following custom attributes: [ParseChildren(false), PersistChildren(false)] I'm using ParseChildren(false), because i've got two collection properties that use the following custom attributes: [NotifyParentProperty(true), PersistenceMode(Persi...more >>

I have built a web control that inherits from webcontrol class. When using the control I created in a project, I set certain properties such as the Font, font size that were inherit in the webcontrol class. When I perform a postback to the server those properties that I set with values are not retai...more >>