LINQ and Dynamic Predicate Construction at Runtime

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel;

namespace LINQDynamicSearchDemo {
    [DataObject]
    public partial class Employee : INotifyPropertyChanging, INotifyPropertyChanged {
        
        /// <summary>
        /// this actually doesn't need to be here, 
        /// I just used it so that I could generate the 
        /// list of columns on the GridView faster by 
        /// binding an ObjectDataSource to this datatype, 
        /// hooking it up, refreshing the schema, and then deleteing it.
        /// </summary>
        /// <returns></returns>
        public static IQueryable<Employee> GetAll() {
            var ctx = Config.GetCurrentContext();

            return ctx.Employees;
        }
        
    }
}