asp.net-mvc – 强大的html帮助程序,具有不同的get和post模型

@{
var paymentHtml = Html.HtmlHelperFor<Payment>();
}

@paymentHtml.EditorFor(p => p.Amount)

使用此扩展方法：

public static class HtmlHelperFactoryExtensions {

   public static HtmlHelper<TModel> HtmlHelperFor<TModel>(this HtmlHelper htmlHelper) {
      return HtmlHelperFor(htmlHelper,default(TModel));
   }

   public static HtmlHelper<TModel> HtmlHelperFor<TModel>(this HtmlHelper htmlHelper,TModel model) {
      return HtmlHelperFor(htmlHelper,model,null);
   }

   public static HtmlHelper<TModel> HtmlHelperFor<TModel>(this HtmlHelper htmlHelper,TModel model,string htmlFieldPrefix) {

      var viewDataContainer = CreateViewDataContainer(htmlHelper.ViewData,model);

      TemplateInfo templateInfo = viewDataContainer.ViewData.TemplateInfo;

      if (!String.IsNullOrEmpty(htmlFieldPrefix))
         templateInfo.HtmlFieldPrefix = templateInfo.GetFullHtmlFieldName(htmlFieldPrefix);

      ViewContext viewContext = htmlHelper.ViewContext;
      ViewContext newViewContext = new ViewContext(viewContext.Controller.ControllerContext,viewContext.View,viewDataContainer.ViewData,viewContext.TempData,viewContext.Writer);

      return new HtmlHelper<TModel>(newViewContext,viewDataContainer,htmlHelper.RouteCollection);
   }

   static IViewDataContainer CreateViewDataContainer(ViewDataDictionary viewData,object model) {

      var newViewData = new ViewDataDictionary(viewData) {
         Model = model
      };

      newViewData.TemplateInfo = new TemplateInfo { 
         HtmlFieldPrefix = newViewData.TemplateInfo.HtmlFieldPrefix 
      };

      return new ViewDataContainer {
         ViewData = newViewData
      };
   }

   class ViewDataContainer : IViewDataContainer {

      public ViewDataDictionary ViewData { get; set; }
   }
}