Build a Google IG like AJAX Start Page in 7 days using ASP.NET AJAX and .NET 3.0

using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Collections.Generic;
using System.Drawing;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Design;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel.Serialization;
using System.Workflow.Runtime;
using System.Workflow.Activities;
using System.Workflow.Activities.Rules;

using System.Query;
using System.Data.DLinq;

using DashboardDataAccess;

namespace DashboardBusiness.Activities
{
    public partial class ReorderWidgetInstanceOnColumnActivity : System.Workflow.ComponentModel.Activity
	{
		public ReorderWidgetInstanceOnColumnActivity()
		{
			InitializeComponent();
		}

        private static DependencyProperty PageIdProperty = DependencyProperty.Register("PageId", typeof(int), typeof(ReorderWidgetInstanceOnColumnActivity));

        public int PageId
        {
            get { return (int)base.GetValue(PageIdProperty); }
            set { base.SetValue(PageIdProperty, value); }
        }

        private static DependencyProperty ColumnNoProperty = DependencyProperty.Register("ColumnNo", typeof(int), typeof(ReorderWidgetInstanceOnColumnActivity));

        public int ColumnNo
        {
            get { return (int)base.GetValue(ColumnNoProperty); }
            set { base.SetValue(ColumnNoProperty, value); }
        }

        protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)
        {
            var db = DatabaseHelper.GetDashboardData();
            var query = from wi in db.WidgetInstances
                        where wi.PageId == PageId && wi.ColumnNo == ColumnNo
                        orderby wi.OrderNo
                        select wi;
            List<WidgetInstance> list = query.ToList();

            int orderNo = 0;
            foreach( WidgetInstance wi in list )
            {
                wi.OrderNo = orderNo ++;
            }

            db.SubmitChanges();
            
            return ActivityExecutionStatus.Closed;
        }
	}
}