/// <summary>
 /// 为 <see cref="HtmlHelper"/> 对象扩展 timespinner 元素。
 /// </summary>
 /// <typeparam name="TModel">数据模型类型。</typeparam>
 /// <typeparam name="TProperty">绑定的属性的类型。</typeparam>
 /// <param name="htmlHelper"></param>
 /// <param name="expression">指定绑定属性的表达式。</param>
 /// <param name="settings">参数选项。</param>
 /// <returns></returns>
 public static HtmlHelper <TModel> TimeSpinner <TModel, TProperty>(this System.Web.Mvc.HtmlHelper <TModel> htmlHelper, Expression <Func <TModel, TProperty> > expression, TimeSpinnerSettings settings = null)
 {
     return(new HtmlHelper <TModel>().TimeSpinner(expression, settings));
 }
 /// <summary>
 /// 为 <see cref="HtmlHelper"/> 对象扩展 timespinner 元素。
 /// </summary>
 /// <param name="htmlHelper"></param>
 /// <param name="exp">属性名或使用 txt 作为前缀的 ID 名称。</param>
 /// <param name="settings">参数选项。</param>
 /// <returns></returns>
 public static HtmlHelper TimeSpinner(this System.Web.Mvc.HtmlHelper htmlHelper, string exp, TimeSpinnerSettings settings = null)
 {
     return(new HtmlHelper().TimeSpinner(exp, settings));
 }