如何通过HTML类来创建一个MVC视图一个单选按钮列表(剃刀语法) [英] How can I create a RadioButtonList in a MVC View via HTML class ( Razor syntax )
问题描述
我需要显示在单选按钮列表,一些这样的事我的名单:
@ Html.RadioButtonList(FeatureList,新的SelectList(ViewBag.Features))
但是当你知道有在HTML Helper类没有RadioButtonList的类,当我使用:
@ Html.RadioButton(FeatureList,新的SelectList(ViewBag.Features))
它显示我一个空白的名单!
//控制器codeS:
公众的ActionResult规则()
{ ViewBag.Features =(从Db.Features m其中m.ParentID == 3选择m.Name);
返回查看(); }
Html.RadioButton
不采取(字符串的SelectList)
参数,所以我想空白列表预期;)
您可以1)
使用的foreach
在模型中的单选按钮值,并使用 Html.RadioButton(字符串对象)
超载来迭代你的价值观
//选项可能就是一个List<串GT;或其他适当的
//为您Feature.Name数据类型
@foreach(在Model.Options VAR myvalue的){
@ Html.RadioButton(nameOfListmyvalue的)
}
或2)
写的名单了自己的助手方法 - 可能会是这个样子(我从来没有写一个像这样,所以你的里程可能会有所不同)
公共静态MvcHtmlString单选按钮列表(此的HtmlHelper帮手,
串NameOfList,列表与LT;字符串> RadioOptions){ StringBuilder的SB =新的StringBuilder(); //把一个类似这里的foreach
的foreach(在RadioOptions VAR myOption){
sb.Append(helper.RadioButton(NameOfList,myOption));
} 返回新MvcHtmlString(sb.ToString());
}
然后调用你的新助手在你看来像(假设Model.Options仍然是列表或其他适当的数据类型)
@ Html.RadioButtonList(nameOfList,Model.Options)
I need to show my list in a RadioButtonList , some thing like this: @Html.RadioButtonList("FeatureList", new SelectList(ViewBag.Features)) But as you know there is no RadioButtonList class in HTML Helper class and when I use : @Html.RadioButton("FeatureList", new SelectList(ViewBag.Features)) it shows me a blank list! // Controller codes :
public ActionResult Rules()
{
ViewBag.Features = (from m in Db.Features where m.ParentID == 3 select m.Name);
return View();
}
Html.RadioButton
does not take (string, SelectList)
arguments, so I suppose the blank list is expected ;)
You could 1)
Use a foreach
over your radio button values in your model and use the Html.RadioButton(string, Object)
overload to iterate your values
// Options could be a List<string> or other appropriate
// data type for your Feature.Name
@foreach(var myValue in Model.Options) {
@Html.RadioButton("nameOfList", myValue)
}
or 2)
Write your own helper method for the list--might look something like this (I've never written one like this, so your mileage may vary)
public static MvcHtmlString RadioButtonList(this HtmlHelper helper,
string NameOfList, List<string> RadioOptions) {
StringBuilder sb = new StringBuilder();
// put a similar foreach here
foreach(var myOption in RadioOptions) {
sb.Append(helper.RadioButton(NameOfList, myOption));
}
return new MvcHtmlString(sb.ToString());
}
And then call your new helper in your view like (assuming Model.Options is still List or other appropriate data type)
@Html.RadioButtonList("nameOfList", Model.Options)
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