CSS Custom Provider To extend Web Control's Property Window

using System;
using System.ComponentModel;
using System.Web.UI;
using System.Web.UI.WebControls; 
using System.Diagnostics;
using System.IO;
using System.Windows.Forms;
using System.Drawing.Design;

namespace AV.UI.Controls
{
	/// <summary>
	/// Summary description for Class1.
	/// </summary>
	[ProvideProperty("MyCSSName",typeof(WebControl))] 
	public class CSSNameProvider : Component, IExtenderProvider
	{
		public CSSNameProvider()
		{
			//Trace.Listeners.Add(new EventLogTraceListener("CSSNameProvider"));
			CSSFileName = "";
			this.MyCSSName = "";
		}

		public bool CanExtend(object extendee)
		{
			//Trace.WriteLine(extendee.ToString());
			return (extendee is WebControl);
		}

		private string m_CSSClass;

		[Browsable(false)]
		[Description("Gets or Sets the CSS Class")]
		[Editor(typeof(CSSNameEditor),typeof(UITypeEditor))]
		public string MyCSSName
		{
			get 
			{ 
				//Trace.WriteLine("In get method ");
				return m_CSSClass;
			}
			set 
			{
				//Trace.WriteLine("In set method ");
				m_CSSClass = value;
			}
		}

		private static string m_CSSFile;

		[Browsable(false)]
		[Description("Gets or Sets the CSS File")]
		[Editor(typeof(CSSFileEditor),typeof(UITypeEditor))]
		public static string CSSFileName
		{
			get 
			{ 
				//Trace.WriteLine("In get file method ");
				return m_CSSFile;
			}
			set 
			{
				//Trace.WriteLine("In set file method ");
				m_CSSFile = value;
			}
		}

		[Browsable(true)]
		[Description("Gets or Sets the CSS File")]
		[Editor(typeof(CSSFileEditor),typeof(UITypeEditor))]
		public string CSSFile
		{
			get 
			{ 
				//Trace.WriteLine("In get file method ");
				return CSSFileName;
			}
			set 
			{
				//Trace.WriteLine("In set file method ");
				CSSFileName = value;
			}
		}

		[Browsable(true)]
		[Description("Gets or Sets the CSS Class for the control.")]
		[Editor(typeof(CSSNameEditor),typeof(UITypeEditor))]
		public string GetMyCSSName(System.Web.UI.Control control)
		{
			//Trace.WriteLine("In GetMyCSSName method ");
			return MyCSSName;
		}

		public void SetMyCSSName(System.Web.UI.Control control, string myCSS)
		{
			//Trace.WriteLine("In SetMyCSSName method ");
			WebControl myControl = (WebControl)control;
			this.MyCSSName = myCSS;
			myControl.CssClass = myCSS;
		}

		public string PickCSSFileName()
		{
			string fileName = String.Empty;
			OpenFileDialog dlg = new OpenFileDialog();
			//Trace.WriteLine("Current Directory " + Environment.CurrentDirectory.ToString());
			dlg.InitialDirectory = @"C:\Inetpub\wwwroot\";
			dlg.Filter = "css files(*.css)|*.css";
			dlg.FilterIndex = 1;
			if(dlg.ShowDialog() == DialogResult.OK)
			{
				fileName = dlg.FileName;
			}
			return fileName;
		}

		public static string PickCSSName()
		{
			string cssName = String.Empty;
			
			if(CSSFileName == "")
			{
				MessageBox.Show("You must select a CSS file using Provider Property window.");
				return cssName;
			}
			
			CSSClassViewer viewer = new CSSClassViewer(CSSFileName);
			viewer.ShowDialog(); 
			cssName = viewer.CSSName;
			return cssName;
		}
	}
}