绑定DropdownlistFor与Viewbag

本文介绍了绑定DropdownlistFor与Viewbag的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想绑定的DropDownListFor助手与控制器中定义的viewbag。但我正在逐渐错误。

查看code： -

  @ Html.DropDownListFor（型号=＆GT; model.CurrencyID，ViewBag.CurrencyList为SelectListItem））

控制器code： -

 public ActionResult Create()
>  {
>    var content = from p in db.Currency
>                  where p.IsActive == true
>                  orderby p.CurrencyName
>                  select new { p.CurrencyID, p.CurrencyCode };
> 
>    var x = content.ToList().Select(c => new SelectListItem         
>                            {
>                               Text = c.CurrencyCode,
>                               Value = c.CurrencyID.ToString(),
>                               Selected = (c.CurrencyID == 68)
>                            }).ToList();
>             ViewBag.CurrencyList = x;
> 
>             return View();            
>         }

Error Received:-System.Web.Mvc.HtmlHelper' does not contain a definition for 'DropDownListFor' and the best extension method overload 'System.Web.Mvc.Html.SelectExtensions.DropDownListFor(System.Web.Mvc.HtmlHelper, System.Linq.Expressions.Expression>, System.Collections.Generic.IEnumerable)' has some invalid arguments

解决方案

You need to change

@Html.DropDownListFor(model => model.CurrencyID, ViewBag.CurrencyList as SelectListItem))

@Html.DropDownListFor(model => model.CurrencyID, ViewBag.CurrencyList as IEnumerable<SelectListItem>)

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