AJAX Progress Bar for ASP.NET

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Threading;

[assembly: WebResource("hmlib.Web.UI.Controls.ProgressBar.ProgressBar.js", "text/javascript")]
namespace hmlib.Web.UI.Controls
{
	[ToolboxData("<{0}:ProgressBar runat=server></{0}:ProgressBar>")]
	[ToolboxBitmap(typeof(ProgressBar), "ProgressBar.ProgressBar.ico")]
	public partial class ProgressBar : ScriptControl
	{
		protected override void OnPreRender(EventArgs e)
		{
			base.OnPreRender(e);
			ResourceHandler.RegisterjQuery(this);
			//ResourceHandler.RegisterJSON(this);
			ResourceHandler.Register_hmlib(this);
		}
		protected override void Render(HtmlTextWriter writer)
		{
			if (DesignMode)
			{
				this.Style["cursor"] = "default";
				this.Style["border"] = "solid 1px black";
				this.Style["text-align"] = "center";
				this.Controls.Clear();
				this.Controls.Add(new LiteralControl("[" + this.ID + "]"));
				base.Render(writer);
				return;
			}
			if (!this.Visible) return;
			this.Attributes.CssStyle.Clear();
			base.Render(writer);
			//this.Attributes["data-completed"] = (this.Progress.Value >= 1) ? "1" : "0";
			//writer.Write("<span>Hello</span>");
		}
		protected override IEnumerable<ScriptDescriptor> GetScriptDescriptors()
		{
			ScriptControlDescriptor descriptor = new ScriptControlDescriptor("hmlib.Web.UI.Controls.ProgressBar.ProgressBar", this.ClientID);
			//descriptor.AddProperty("CssClass", this.CssClass);			
			descriptor.AddProperty("ServicePath", ResolveUrl(this.ServicePath));
			descriptor.AddProperty("Service_GetMethod", this.Service_GetMethod);
			descriptor.AddProperty("ProgressId", this.ProgressId);
			descriptor.AddProperty("Interval", this.Interval);
			descriptor.AddProperty("SingleLine", this.SingleLine);
			descriptor.AddProperty("Completed", this.Progress.Value >= 1);
			descriptor.AddProperty("OnClientComplete", this.OnClientComplete);
			if (this.MessageTarget != null)
			{
				descriptor.AddProperty("MessageTargetId", this.MessageTarget.ClientID);
				descriptor.AddProperty("MessageTargetType", this.MessageTarget.GetType().Name.ToLower());
			}
			if (this.ProgressControl != null)
			{
				descriptor.AddProperty("ProgressControlId", this.ProgressControl.ClientID);
			}
			if (this.Complete != null)
			{
				descriptor.AddProperty("CompletePostbackReference", Page.ClientScript.GetPostBackEventReference(this, "Complete"));
				//this.Attributes["data-complete_postback_reference"] = Page.ClientScript.GetPostBackEventReference(this, "Complete");
			}
			if (!this.Width.IsEmpty)
			{
				descriptor.AddProperty("Width", this.Width.ToString());
			}
			yield return descriptor;
		}
		// Generate the script reference
		protected override IEnumerable<ScriptReference> GetScriptReferences()
		{
			yield return new ScriptReference("hmlib.Web.UI.Controls.ProgressBar.ProgressBar.js", this.GetType().Assembly.FullName);
		}
	}
}