Custom Control grabs parent page's elements?

**WALDO** · Jul 3rd, 2003, 09:51 AM

I was wondering...

How could I grab the <HEAD> tag of the parent page of a Custom Control?

I'm basically writing a client-side calendar control that has style properties that i would like to set via a style sheet, rather than implementing my own font properties.

I want to be able to grab the <HEAD> tag of the parent page (either as an object or text) and parse it to determine if my <LINK> tag has been applied. If it has not, then I want to add the tag programmatically. I could apply the same concept to script with
IsClientScriptBlockRegistered and

RegisterClientScriptBlock

but how can I do this for a <LINK> tag or a <STYLE> tag?

**Lethal** · Jul 3rd, 2003, 10:20 AM

I actually do the same thing in my forums. I dynamically load a stylesheet and populate other various data within the head tag. I built a custom control that extends the literal control. Here is the code:

NOTE: You could also use a databinding expression within the head tag.

Code:

namespace VegaSoft.VSForums.Controls
{
	using System;
	using System.Web;
	using System.Web.UI;
	using VegaSoft.VSForums.Web;
	using VegaSoft.VSForums.Config;

	public class SkinManager : LiteralControl
	{
		public SkinManager() 
		{	
			string content = "";
			if (ActiveUser.IsLoggedIn())
				content = String.Format("<title>Vega Forums Message Board (Logged in as: {0})</title>", ActiveUser.Name);
			else
				content = "<title>Vega Forums Message Board</title>";
				
			content += String.Format("\n<link href='{0}style/styles.css' type='text/css' rel='stylesheet' />", ActiveUser.PathToSkin);
			content += String.Format("\n<script src={0}></script>", Configuration.PathToScripts);
			base.Text = content;
		}
	}
}

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