Chapter 8: User Controls: Page 281

mdial75 · #1 (**permalink**) December 18th, 2009, 04:32 PM

When attempting update of control declaration on page 281, this line

Code:

   <Wrox:Banner ID="Banner1" runat="server" />

has green line under "Banner" and claims:

Code:

  Element 'Banner' is not a known element....

My web.config file has:

Code:

  <pages theme="Monochrome" >
   <controls>
     <add tagPrefix="Wrox" tagName="Banner" src="~/Controls/Banner.ascx"/>
   </controls>
  </pages>

What am I missing? I've stepped through this a couple of times.
Thanks, Mark

mdial75 · #2 (**permalink**) December 18th, 2009, 04:39 PM

Here is the code behind from the control, Banner.ascx.cs

Code:

public partial class Controls_Banner : System.Web.UI.UserControl
{
	protected void Page_Load(object sender, EventArgs e)
	{
		pnlHorizontal.Visible = false;
		pnlVertical.Visible = false;

		switch (DisplayDirection)
		{
			case Direction.Horizontal:
				pnlHorizontal.Visible = true;
				break;
			case Direction.Vertical:
				pnlVertical.Visible = true;
				break;
		}
	}

	public Direction DisplayDirection { get; set; }


}

Imar · #3 (**permalink**) December 18th, 2009, 04:46 PM

Hi Mark,

Is the .ascx file indeed called Banner.ascx and located in the Controls folder? Is Controls located at the root of the site in the Solution Explorer? Is the Direction enum defined correct and does everything compile? (Choose Build | Build Web Site to test that out).

Cheers,

Imar

mdial75 · #4 (**permalink**) December 18th, 2009, 05:12 PM

filename: Banner.ascx in folder: /Controls off the root.

Direction.cs has only this text:

Code:

public enum Direction
{
	Horizontal,
	Vertical
}

Here are the errors when I try to compile:

Code:

Warning	2	Element 'Banner' is not a known element. This can occur if there is a compilation error in the Web site, or the web.config file is missing.	Z:\idm\idmwebdev\MasterPages\MasterPage.master	40	10	Z:\idm\idmwebdev\
Error	3	'Controls_Banner.DisplayDirection.get' must declare a body because it is not marked abstract or extern	Z:\idm\idmwebdev\Controls\Banner.ascx.cs	30	38	Z:\idm\idmwebdev\
Error	4	'Controls_Banner.DisplayDirection.set' must declare a body because it is not marked abstract or extern	Z:\idm\idmwebdev\Controls\Banner.ascx.cs	30	43	Z:\idm\idmwebdev\
Error	5	z:\idm\idmwebdev\Controls\Banner.ascx.cs(30): error CS0501: 'Controls_Banner.DisplayDirection.get' must declare a body because it is not marked abstract or extern

Should this work under .NET 2.0?

mdial75 · #5 (**permalink**) December 18th, 2009, 05:23 PM

OK, I think the problem is .NET 3.5. My web server hasn't been upgrade yet, so I was working as .NET 2.0.

All working well now.

Thanks much, and thanks for the book. Very good and giving one to a friend for Christmas.

Imar · #6 (**permalink**) December 19th, 2009, 05:09 AM

Quote:

Thanks much, and thanks for the book. Very good and giving one to a friend for Christmas

Excellent. Good to hear you got it resolved, and even better to hear you like the book so much ;-)

Cheers,

Imar

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