上接扩展GridView控件(4) - 联动复选框（复选框的全选和取消全选）

using System.Collections; 
using System.ComponentModel; 
using System.Web.UI; 
 
namespace YYControls.SmartGridView 
{ 
         /// <summary> 
         /// CheckboxAlls 的摘要说明。 
         /// 注意要继承自CollectionBase 
         /// </summary> 
        [ 
        ToolboxItem( false), 
        ParseChildren( true) 
        ] 
         public  class CheckboxAlls : CollectionBase 
        { 
                 /// <summary> 
                 /// 构造函数 
                 /// </summary> 
                 public CheckboxAlls() 
                        :  base() 
                { 
                } 
 
                 /// <summary> 
                 /// 实现IList接口 
                 /// 获取或设置指定索引处的元素。 
                 /// </summary> 
                 /// <param name="index">要获得或设置的元素从零开始的索引</param> 
                 /// <returns></returns> 
                 public CheckboxAll  this[ int index] 
                { 
                        get 
                        { 
                                 return (CheckboxAll) base.List[index]; 
                        } 
                        set 
                        { 
                                 base.List[index] = (CheckboxAll)value; 
                        } 
                } 
 
                 /// <summary> 
                 /// 实现IList接口 
                 /// 将某项添加到 System.Collections.IList 中。 
                 /// </summary> 
                 /// <param name="item">要添加到 System.Collections.IList 的 System.Object。</param> 
                 public  void Add(CheckboxAll item) 
                { 
                         base.List.Add(item); 
                } 
 
                 /// <summary> 
                 /// 实现IList接口 
                 /// 从 System.Collections.IList 中移除特定对象的第一个匹配项。 
                 /// </summary> 
                 /// <param name="index">要从 System.Collections.IList 移除的 System.Object</param> 
                 public  void Remove( int index) 
                { 
                         if (index > -1 && index <  base.Count) 
                        { 
                                 base.List.RemoveAt(index); 
                        } 
                } 
        } 
}

  private CheckboxAlls _checkboxAlls; 
                 /// <summary> 
                 /// 复选框组集合 一个组由一个 全选复选框 和多个 项复选框组成 
                 /// </summary> 
                [ 
                PersistenceMode(PersistenceMode.InnerProperty), 
                DesignerSerializationVisibility(DesignerSerializationVisibility.Content), 
                Description( "复选框组集合 一个组由一个 全选复选框 和多个 项复选框组成"), 
                Category( "扩展") 
                ] 
                 public  virtual CheckboxAlls CheckboxAlls 
                { 
                        get 
                        { 
                                 if (_checkboxAlls ==  null) 
                                { 
                                        _checkboxAlls =  new CheckboxAlls(); 
                                } 
                                 return _checkboxAlls; 
                        } 
                }

/// <summary> 
                 /// 隐藏字段的ID，用于存每组的全选复选框ID 
                 /// </summary> 
                 protected  string HiddenCheckboxAllID 
                { 
                        get {  return  "hdn_checkboxAll"; } 
                } 
                 /// <summary> 
                 /// 隐藏字段的ID，用于存每组的项复选框ID 
                 /// </summary> 
                 protected  string HiddenCheckboxItemID 
                { 
                        get {  return  "hdn_checkboxItem"; } 
                } 
 
                 /// <summary> 
                 /// 组分隔符，一个 全选复选框 和其对应的n个 项复选框 为一个组 
                 /// </summary> 
                 protected  char GroupSeparator 
                { 
                        get {  return ','; } 
                } 
                 /// <summary> 
                 /// 项分隔符，项复选框 每个项之间的分隔符 
                 /// </summary> 
                 protected  char ItemSeparator 
                { 
                        get {  return '|'; } 
                }

     本文转自webabcd 51CTO博客，原文链接：http://blog.51cto.com/webabcd/345494，如需转载请自行联系原作者