public static void PlaceHolderToTag(PlaceHolder holder, string tag, HtmlAttr[] attributes) {

		if (!holder.Visible) { return; }

		//Init new control to use as tag
		HtmlControl newControl = new HtmlGenericControl(tag);

		//Add attributes
		foreach (HtmlAttr attr in attributes) {
			newControl.Attributes.Add(attr.Key, attr.Value);
		}

		//Add all the place holder's controls
		foreach (Control ctrl in holder.Controls) {
			newControl.Controls.Add(ctrl);
		}

		holder.Parent.Controls.Add(newControl);
		holder.Controls.Clear();
}

## Markup ##
_Using square [ ] brackets for compatibility with Snipplr comment form_

	[asp:PlaceHolder ID="StuffHolder" runat="server" ]
		<p>Some stuff in here</p>
	[/asp:PlaceHolder]                

## Code Behind ##

	HtmlAttr[] attributes = {
		new HtmlAttr("id","stuff"),
		new HtmlAttr("class","container")
	};
	PlaceHolderToTag(StuffHolder, "div", attributes);

## Result ##

	[div id="stuff" class="container"]
		<p>Some stuff in here</p>
	[/div]
	
### Notes:

Useful with the "Visible" property on the placeholder, and facilites 
programmically setting IDs on DIVs (can set id based on some item name)

Convert ASP.NET PlaceHolder to HTML tag with attributes

html, c, aspnet

C#