Mvc HtmlHelper 方法扩展 DropDownListFor

 

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1	项目中遇到表单提交中遇到枚举，忽然想起1年前的1小段代码结合HtmlHelper在扩展一下 便于开发中使用<br><br><br>

  public static class HtmlHelperExtensions {
     public static MvcHtmlString DropDownListFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, Enum enumType, string defualtName)
        {
            IList<SelectListItem> selectList = enumType.ToSelectListItem(defualtName);
            return SelectExtensions.DropDownListFor<TModel, TProperty>(htmlHelper, expression, selectList, (string)null, (IDictionary<string, object>)null);
        }
}

 

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public static class ExSelectListItem     {         public static List<SelectListItem> ToSelectListItem(this Enum valueEnum)         {             return (from int value in Enum.GetValues(valueEnum.GetType())                     select new SelectListItem                     {                         Text = Enum.GetName(valueEnum.GetType(), value),                         Value = value.ToString()                     }).ToList();         }           public static List<SelectListItem> ToSelectListItem(this Enum valueEnum, string selectName)         {             return (from int value in Enum.GetValues(valueEnum.GetType())                     select new SelectListItem                     {                         Text = Enum.GetName(valueEnum.GetType(), value),                         Value =value.ToString(),                         Selected = Enum.GetName(valueEnum.GetType(), value) == selectName ? true : false                     }).ToList();         }     }

　　通过这两个扩展我们将会有如下的前台处理操作 

 @Html.DropDownListFor(m => m.ArrtPublish.Visibility, PublishType.Public, "Public")

变淡的属性为枚举，给出枚举类型，给出默认选择的下拉列表内容。 

这样前后台数据绑定， 

程序员再也不用担心枚举下拉列表的数据绑定了。 

 

至此给大家提供一个思路 。 

忘大家发散思维集思广益。 

 

休息一会，养养眼！