user control not rendering content of ascx

Question

i thought this was a simple issue until i started searching for answers and realised it's so simple i'm the only one who has it

my user control isnt displaying anything. what am i doing wrong? (besides letting this be my life...)

control:

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="ctrl.ascx.cs" Inherits="proj.UserControls.ctrl" %>

asdjkldasfjasdfljdfasjklasdfjkl

use:

<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="page.aspx.cs" Inherits="proj.Admin.page" %>

<%@ Register assembly="proj" namespace="proj.UserControls" tagprefix="cc1" %>

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
        <cc1:ctrl ID="test" runat="server" />
</asp:Content>

Hardigg

And what's wrong? No output at all? Empty output (I mean all the wrapper elements are there, but no text inside them)? – Hasbeen

Answer 1

Change:-

<%@ Register assembly="proj" namespace="proj.UserControls" tagprefix="cc1" %>

To

<%@ Register TagPrefix="cc1" TagName="ctrl" Src="/path/to/ctrl.ascx" %>

You're missing TagName, which represents the text following the colon in the control declaration. You're also not telling the engine where to find the source file ( Src attribute ). Change /path/to to represent the path from root to your control.

Salome

Thank you. That was it. No Src. It turns out the other solution is to drag the ascx page from the solution explorer to the page in design mode and let vs rewrite the declaration. If I wasnt so paranoid about letting vs write code I might've tried that sooner, but I was using vs 2003 the other day and I still get chills... – Hardigg

Answer 2

IF you have created custom control then you should add reference of the dll of your custom control ( from choose items from ToolBox of Visual Studio). and then Use the following tag in the page :

<%@ Register assembly="proj" namespace="proj.UserControls" tagprefix="cc1" %>

If you created User Control then add the following line in your page:

<%@ Register src="~/UserControls/ctrl.ascx" TagName="ctrl" tagprefix="cc1" %>

Toussaint

Answer 3

instead of

<%@ Register assembly="proj" namespace="proj.UserControls" tagprefix="cc1" %>

use

 <%@ Register  src="~/UserControls/ctrl.ascx"  TagName="ctrl" tagprefix="cc1" %>

Rica

Answer 4

Make sure you haven't set visible="false" on a panel or div containing your control.

That would've saved me a good hour.

Sayce

Answer 5

I had to add a new user control to an existing project that already contained a lot of them, and wondered why mine was not rendering. Turns out you can also specify this in Web.config, under configuration, system.web, pages, like this:

<controls>
    <add tagPrefix="cc1" tagName="ctrl" src="~/UserControls/ctrl.ascx" />

...which will register the control for the whole project, so you don't have to specify this on every page. Useful for controls that are heavily reused.

Platte