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// Copyright (c)All Right Reserved by Melco// All other rights reserved.// 
      
       Infosys
          // 
      
       2013/03/08
      // 
Melco Crown Project Patron Management Module Class File
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows;using System.Windows.Controls;using System.Collections;namespace GEMS.Windows.Controls.CustomControls{    public class CustomMultipleDropDownBox : ComboBox    {        #region Property        protected ListBox MyListBox        {            get            {                return base.GetTemplateChild("MyListBox") as ListBox;            }        }        protected ListBox MySelectedListBox        {            get            {                return base.GetTemplateChild("MySelectedListBox") as ListBox;            }        }        //public IList SelectedItems        //{        //    get { return (IList)GetValue(SelectedItemsProperty); }        //    set { SetValue(SelectedItemsProperty, value); }        //}        //// Using a DependencyProperty as the backing store for SelectedItems.  This enables animation, styling, binding, etc...        //public static readonly DependencyProperty SelectedItemsProperty =        //    DependencyProperty.Register("SelectedItems", typeof(IList), typeof(CustomMultipleDropDownBox), new PropertyMetadata(null));                #endregion        #region construtor        static CustomMultipleDropDownBox()        {            DefaultStyleKeyProperty.OverrideMetadata(typeof(CustomMultipleDropDownBox), new FrameworkPropertyMetadata(typeof(CustomMultipleDropDownBox)));        }        public CustomMultipleDropDownBox()        {                                }        public override void OnApplyTemplate()        {            base.OnApplyTemplate();            //load the text box control            if (this.MyListBox != null)            {                this.MyListBox.SelectionChanged += MyListBox_SelectionChanged;            }            if (this.MySelectedListBox!=null)            {                          }                            }        protected override void OnItemsChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs e)        {            base.OnItemsChanged(e);        }        protected override void OnItemsSourceChanged(IEnumerable oldValue, IEnumerable newValue)        {            base.OnItemsSourceChanged(oldValue, newValue);        }                    #endregion        #region Event        void MyListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)        {                      this.MySelectedListBox.ItemsSource = this.MyListBox.SelectedItems;        }        #endregion    }}