我使用另一个stackoverflow问题的一段代码：
namespace MvcHtmlHelpers
{
public static class htmlHelpers
{
/// <summary>
/// Radio button for : Adapted to support enum labels from display attributes
/// </summary>
/// <typeparam name="TModel"></typeparam>
/// <typeparam name="TProperty"></typeparam>
/// <param name="htmlHelper"></param>
/// <param name="expression"></param>
/// <returns></returns>
public static MvcHtmlString RadioButtonForEnum<TModel,TProperty>(
this HtmlHelper<TModel> htmlHelper,Expression<Func<TModel,TProperty>> expression
)
{
var MetaData = ModelMetadata.FromLambdaExpression(expression,htmlHelper.ViewData);
var names = Enum.GetNames(MetaData.ModelType);
var sb = new StringBuilder();
foreach (var name in names)
{
var id = string.Format(
"{0}_{1}_{2}",htmlHelper.ViewData.TemplateInfo.HtmlFieldPrefix,MetaData.PropertyName,name
);
var radio = htmlHelper.RadioButtonFor(expression,name,new { id = id }).ToHtmlString();
sb.AppendFormat(
"<label for=\"{0}\">{1}</label> {2}",id,HttpUtility.HtmlEncode(name),radio
);
}
return MvcHtmlString.Create(sb.ToString());
}
}
}
沿着我目前的枚举：
public enum Options
{
[Display(Name ="Yes")]
0,[Display(Name = "No")]
1,[Display(Name = "Other")]
2,}
如果我然后使用@ html.RadioButtonForEnum(…)它显示我的枚举与相应的框选择没有问题.但是,我希望他们使用标签值[Display(Name =“< text>”)],以使它们更有意义！即不仅仅是0,1,2.
解决方法
您可以使用反射来获取值：
public static MvcHtmlString RadioButtonForEnum<TModel,TProperty>( this HtmlHelper<TModel> htmlHelper,TProperty>> expression ) { var MetaData = ModelMetadata.FromLambdaExpression(expression,htmlHelper.ViewData); var sb = new StringBuilder(); var enumType = MetaData.ModelType; foreach (var field in enumType.GetFields(BindingFlags.Static | BindingFlags.GetField | BindingFlags.Public)) { var value = (int)field.GetValue(null); var name = Enum.GetName(enumType,value); var label = name; foreach (DisplayAttribute currAttr in field.GetCustomAttributes(typeof(DisplayAttribute),true)) { label = currAttr.Name; break; } var id = string.Format( "{0}_{1}_{2}",name ); var radio = htmlHelper.RadioButtonFor(expression,new { id = id }).ToHtmlString(); sb.AppendFormat( "<label for=\"{0}\">{1}</label> {2}",HttpUtility.HtmlEncode(label),radio ); } return MvcHtmlString.Create(sb.ToString()); }