MVC3 CheckBoxList RadioButtonList 扩展

 

/// <summary>
         /// 复选框扩展。
         /// </summary>
         /// <typeparam name="TModel">模型类型。</typeparam>
         /// <typeparam name="TProperty">属性类型。</typeparam>
         /// <param name="helper">HTML辅助方法。</param>
         /// <param name="expression">lambda表达式。</param>
         /// <param name="selectList">选择项。</param>
         /// <param name="htmlAttributes">HTML属性。</param>
         /// <returns>返回复选框MVC的字符串。</returns>
         public static MvcHtmlString CheckBoxListFor<TModel, TProperty>(this HtmlHelper<TModel> helper, Expression<Func<TModel, TProperty>> expression, IEnumerable<SelectListItem> selectList, ButtonFormatter formatter = ButtonFormatter.Horizontal, IDictionary<string, object> htmlAttributes = null)
         {
             if(selectList == null || expression == null)
                 return MvcHtmlString.Empty;
             string name = ExpressionHelper.GetExpressionText(expression);
             List<string> values = null;
             object obj = helper.ViewData.Eval(name);
             if(obj != null)
                 values = obj.ToString().Split<string>();
             else
                 values = new List<string>();
 
             StringBuilder sb = new StringBuilder();
             int index = 0;
             foreach(var item in selectList)
             {
                 TagBuilder tag = new TagBuilder("input");
                 tag.MergeAttributes<string, object>(htmlAttributes);
                 tag.MergeAttribute("type", "checkbox", true);
                 tag.MergeAttribute("name", name, true);
                 tag.MergeAttribute("id", name + index, true);
                 tag.MergeAttribute("value", item.Value, true);
                 if(values.Contains(item.Value))
                     tag.MergeAttribute("checked", "checked", true);
                 sb.AppendLine(tag.ToString(TagRenderMode.SelfClosing) + " ");
                 TagBuilder label = new TagBuilder("label");
                 label.MergeAttribute("for", name + index);
                 label.InnerHtml = item.Text;
                 sb.AppendLine(label.ToString());
                 if(formatter == ButtonFormatter.Vertical)
                     sb.AppendLine("<br />");
                 index++;
             }
             return new MvcHtmlString(sb.ToString());
         }
 
         /// <summary>
         /// 复选框扩展。
         /// </summary>
         /// <typeparam name="TModel">模型类型。</typeparam>
         /// <typeparam name="TProperty">属性类型。</typeparam>
         /// <param name="helper">HTML辅助方法。</param>
         /// <param name="expression">lambda表达式。</param>
         /// <param name="selectList">选择项。</param>
         /// <param name="htmlAttributes">HTML属性。</param>
         /// <returns>返回复选框MVC的字符串。</returns>
         public static MvcHtmlString CheckBoxListFor<TModel, TProperty>(this HtmlHelper<TModel> helper, Expression<Func<TModel, TProperty>> expression, IEnumerable<SelectListItem> selectList, ButtonFormatter formatter, object htmlAttributes)
         {
             return helper.CheckBoxListFor<TModel, TProperty>(expression, selectList, formatter, new RouteValueDictionary(htmlAttributes));
         }
 
         /// <summary>
         /// 枚举复选框扩展。
         /// </summary>
         /// <typeparam name="TModel">模型类型。</typeparam>
         /// <typeparam name="TProperty">属性类型。</typeparam>
         /// <param name="helper">HTML辅助方法。</param>
         /// <param name="expression">lambda表达式。</param>
         /// <param name="selectList">选择项。</param>
         /// <param name="htmlAttributes">HTML属性。</param>
         /// <returns>返回复选框MVC的字符串。</returns>
         public static MvcHtmlString CheckBoxListFor<TModel, TProperty>(this HtmlHelper<TModel> helper, Expression<Func<TModel, TProperty>> expression, ButtonFormatter formatter = ButtonFormatter.Horizontal, object htmlAttributes = null, string classKey = Globals.Resource)
         {
             var selectList = new List<SelectListItem>();
             Globals.ForEach<TProperty>(p => {
                 selectList.Add(new SelectListItem { Text = Globals.GetGlobalResourceByKey(p, classKey), Value = p.ToString() });
             });
             return