The AnywherePlaceHolder. Part 3. The AnywhereValidationSummaryPlaceHolder

using System;
using System.Text;
using System.Web.UI;
using System.Globalization;
using System.IO;

namespace DeKale.WebControls
{
	/// <summary>
	/// A simple AnywherePlaceHolder. Works fine for controls that output static
	/// html, contain no javascript functions, buttons and don't have to be referenced
	/// from javascript code.
	/// </summary>
	public class SimpleAnywherePlaceHolder : BaseAnywherePlaceHolder
	{
		/// <summary>Overridden.</summary>
		/// <param name="writer">The <see cref="System.Web.UI.HtmlTextWriter"/> object</param>
		protected override void Render(System.Web.UI.HtmlTextWriter writer)
		{
			// Checks if Properties are set correctly.
			this.PreRenderCheck();

			// Render the control
			base.Render(writer);

			// Check if the RenderMethod is RenderNormal. If so, than we're done.
			if (this.RenderMethod == AnywhereRenderMethodType.RenderNormal) return;

			// Create a HtmlTextWriter to buffer the output
			HtmlTextWriter buffer = new HtmlTextWriter(
				new StringWriter(CultureInfo.InvariantCulture));

			// get the output of the ChildControls in the buffer
			base.RenderChildren(buffer);

			// Put the buffered text into a string
			string renderedChildren = buffer.InnerWriter.ToString();

			// Write the call to the JavaScript function to the page.
			this.Page.ClientScript.RegisterStartupScript(
				this.GetType(),
				this.DestinationControlId,
				this.CreateScriptCall(renderedChildren),
				true
			);
		}

	}
}