If RaisePostBackEvent fires, does this disable Webcontrols events? It seems when RaisePostBackEvent, my webcontrols event handlers such as button.click no longer work. So, what is the best way of mixing non-composite controls and web controls? Thanks! -- Lucas Tam (REMOVEnntp@rogers....more >>

I developed a control and a component. My control uses my component. I have a test application and when I add my control to a form in the test application, my control's dll is automatically added to my test projects references list. But I need to add my component's dll to be added to reference l...more >>

Hi, i built a control which contains two listbox controls and two buttons which uses to transfer elements from one listbox to the other and back. i used the buttons click events to transfer the selected item from one list to the other but when returning from the sever the lists items are gone. ...more >>

Hi guys, I am trying to implement server control that inherits DataGrid control in order to preserve all of his properties and templates. However I want to add others web controls besides the datagrid control that will provide custom functionality. The problem is that these controls are...more >>

have a web form with page layout = FlowLayout have a PlaceHolder adding controls to the PlaceHolder e.g. PlaceHolder.Controls.Add (TextBox1); question how do I had a line break to the PlaceHolder ?...more >>

I'v made a web user control that I use in one of my .aspx pages. This user control is dynamically loaded a number of times depending on the content of a ArrayList(stored in the session) containing DataSets. Each DataSetscontains the necessary information required to fill the user control with da...more >>

How I can have a TextBox that to only lets me enter letters or numbers? ...more >>

Hi all, I am building a custom control and I add one primitive type (MyProperty1) and one MyClass type (MyProperty2) as public properties I had to make MyClass implement the IComponent interface so it would show properly in the properties window ( It show the name of the property and a + s...more >>

Hi, I have created a user control, and need to change the properties of controls on the user control. However, if the form of user control are not runat=server, I got error of "...is null or not a object". If I have the form runat=server, I got error of "A page can have only one server-side ...more >>

Hi all, In my Composite Control's Sub New Function I am unable to check if Me.Page.IsPostback. Me.Page is Nothing (so i get a NullReferenceException). Do I have to pass the Page Object to my composite control to get access to IsPostBack? Thanks. -- Lucas Tam (REMOVEnntp@rogers.co...more >>

Why are child controls and text mutually exclusive using ASP.NET? The code below gives me either one or the other? private void Page_Load(object sender, System.EventArgs e) { Control formMain = this.FindControl("Form1"); Table table = new Table(); TableRow row = new TableRow();...more >>

Hello, I've created a templated control in C#, and I am trying to have default values for templates if the user of the control does not specify. For example, if the aspx code should look like: <custom:myControl runat="server" id="control1"> <aHeader>a non-default Header</aHeader> </cus...more >>

Is there an easy way to load a style like loading a template with LoadTemplate. I've created a workaround for this, but there must be a better way to do this. I want to create a kind of skin-system. But I want to load the layout of datafields and the style in different files. So I can choos...more >>

Dear Friends, I'm working on a web based(ASP.Net) project. This project contains multiple web projects. I want to use a usercontrol which has been developed in some of these projects, within another project. I Recieve this parser Error : The virtual path '[The path of that usercontrol]' m...more >>

Hi all, I've been struggling for the past few days to get a custom control to pass events to RaisePostBackEvent. My page successfully fires the RaisePostBackEvent, however, the EventArugment is always nothing. I do not understand why the event argument is not being passed. Here is ho...more >>

I have a datagrid in which I want to visualize objects of various type (they inherit from the same base class). I want to display common properties of the objects over the grid. At runtime I create an ArrayList that contains all the objects . When I make the binding I obtain the following err...more >>

Hi. I have now used ASP.NET for a couple of weeks and it _really_ looks good. I have made a custom control, wich has to act as my header on every site. Before i go any further with my control I would appreciate your comments on the design (wich problably is bad) Sorry for the long post... ...more >>

Hi, How can we reuse user controls across web applications. I have controls that are common to my company and want to reuse them across all applications. Thanks Niranjan ...more >>

I am trying to create an ASP.NET control by inheriting from Table. I would like to stop the Rows property from being displayed/persisted at design-time, plus I would like to have new properties I have introduced be persisted as nested tags within my controls tag in the ASP.NET page. To do this I...more >>

Adding Literal Controls in CreateChildControls - Is this bad? Someone told me it was but every example I've seen does not have a problem doing it. They told me I should add the html to the page in the render method and add the control where I want them to go. I just wanted to get other peopl...more >>

Hello, I cannot figure out why this doesnt work. This is almost exactly the same as the samples I've seen but it doesnt work for me. I am making a composite control with a button that has a click event but the event never fires. Here's my code: public class WebCustomControl1 : System.We...more >>

I have a user control, and I would like to create another instance of the user control inside the same user control. I am doing this because the user control has a datagrid, and in the datagrid I instantiate a reference to a new instance of the same ascx file that I am currently on and place i...more >>

Hi, Background: I wrote a custom server control with a public property. Everything works perfekt when I use that server control as following: <DM:Visitenkarte id="Visitenkarte1" runat="server" KontaktID="1"></DM:Visitenkarte> Problem: I would like to use my control within another. So,...more >>

I would like to place an .ASCX file in one project while my main program is in another project. If this is possible, what type of project should I use for the ASCX? How do I call the ASCX from my main program? Do I use the standard @Register directive? Thanks in advance, Jim Christiano ...more >>

Any ideas? -- Thanks, Billy ...more >>

Hi , I want to built a custom server control which has: * a panel * a button which sets the visiblity of the panel true or false and finally a want to add controls in the custom control (label,datagrid,...) in the aspx page just like an asp:panel i have a very small experience in bui...more >>

Hi, I'm loading a user control (.ascx) with LoadControl in a code-behind page. LoadControl returns successfully, and the valid reference it returns is successfully cast to the type of control I need (TimeEntryGrid). All this is done in Page_Init so that the control can catch the Page_Load the...more >>

I've got a custom server control where I need to provide the user the ability to create a list of items items (I know that they will all be strings). In the property browser, I want to use the default type editor for string arrays (basically a textbox where items are seperated by new lines), an...more >>

Hi! I'm so fed up with the built'in control's beeing hard to customize.. I'm trying to modify the radiobuttonlist, so that I can control the appearence of the table when using TableLayout. Right now you can only modify borderwidth,color,style and cellpadding,spacing. I'd like to add the poss...more >>

Hello, I am designing a .net custom control in VS.net 7.1 and my control exposes an array of strings which are supposed to be the items to show. To do this have declared a private string[ ] variable and a public property which returns it. string[] options = new string[1]; public string[] Opt...more >>

Hi, All I design a composite custom control, which has three dropdownlists in it. I find as long as one of the dropdownlist control's id is assigned using uniqueid property of my custom control then a postback event will be fired, but since my dropdownlist has javascript event which does some...more >>

Hi, I have a composite control(TextBoxControl.cs) in my DynamicTextBox.aspx. On the Page_Load of the DynamicTextBox.aspx page, I am calling a business tier assembly, which is returning an ArrayList containing an unknown amount of objects. I would like to pass this ArrayList to my compo...more >>

I have developed a custom control and I want to allow the user to insert code blocks in the .aspx (or .ascx) file to set attributes on the control. For example, I want to allow the user to do this: &lt;pwc:SortColumn HeadingText='<%=GetHeadingText(0)% >'/&gt; &lt;pwc:SortColumn HeadingTe...more >>

I have a custom control that has a simple designer (derived from System.Web.UI.Design.ControlDesigner) associated with it (using the DesignerAttribute). The overriden GetDesignTimeHtml provides the design-time display correctly when this control is placed on a web form. My problem is I also ...more >>

Hi ! After the first researches I found out that with WebForms there is no easy way to implement an IRootDesigner. After inspecting the Web.UI.Page class I have found that it uses these attribute: [ DesignerAttribute(typeof( Microsoft.VSDesigner.WebForms.WebFormDesigner) ), System.ComponentM...more >>

Hi, I've created a custom web control for using in my web application. I want to expose some Font-Name Properties of the control like i did for the Color and Boolean values, so that in the properties pane, a proper list is displayed for user selection. Like for picking up the color ...more >>

Hi Ive found a real nice class that inherits from DataGrid and adds a lot of functionality to it, enough so I want to use it in the app Ive mostly built. I took the class, changed the namespace, and compiled it into the namespace Im using. When I look in ildasm, I can see it with its pr...more >>

I'm using the asp:Table control and it insists on adding the style "border-collapse:collapse;" Any idea how I can make it use the default of separate? Thanks. -- Michael Tissington Oaklodge Technologies http://www.oaklodge.com/technology ...more >>

Hi, I try to create a custom Webcontrol who load others controls from a string... My code seems to works well at runtime, but in design-time I have a NullReferenceException when I try to parse a control with ParseControl. ( see code bellow ) It is a bug of ParseControl? Or maybe ParseCon...more >>

Hi, I'm making some runtime-invisible-WebControls, which should be visible at designtime like the "Repeater"- component in the "Web Forms Toolbox", and invisible at runtime. I think that I have to use HtmlControlDesigner. Is there somebody who have an exsample on how to make the Desig...more >>