Radio Button Enum Helper用于带有资源文件的模型

Question

问题:

需要绑定具有Gender as enum属性的强类型模型.另外,我想显示资源文件中的显示文本.

我的模型是

public enum GenderViewModel
{
  [Display(Name = "Male", ResourceType = typeof(Resources.Global), Order = 0)]
  Male,
  [Display(Name = "Female", ResourceType = typeof(Resources.Global), Order = 1)]
  Female

}

最初,我尝试了http://romikoderbynew.com/2012/02/23/asp-net-mvc-rendering-enum-dropdownlists-radio-buttons-and-listboxes/

但它有点复杂,我无法纠正我的HTML,但我想要.

然后我从stackoverflow看一下简单易用的实现,将枚举传递给html.radiobutton for MVC3

并在cshtml中使用了HtmlHelper,如下所示

@Html.RadioButtonForEnum(m => m.Gender)

HTML生成

<label for="_Gender_Male">
 <input type="radio" value="Male" name="Gender" id="_Gender_Male" 
 data-val-required="Gender is required" data-val="true" checked="checked">
 <span class="radiotext">Male</span>
</label>

<label for="_Gender_Female">
<input type="radio" value="Female" name="Gender" id="_Gender_Female">
<span class="radiotext">Female</span></label>

它非常简单,对我来说效果很好.但我没有从资源文件中获取值.我的应用程序是多语言的,我使用全局资源文件来提供不同的语言支持.

问题:

男性显示应该是男性和女性显示应该是Kvinna应该来自资源文件,因为我目前的文化是sv-se

任何人都可以帮助/提供一个可以很好地控制HTML的简单解决方案吗？

Answer 1

您所要做的就是调整my original helper以便考虑到DisplayAttribute:

public static class HtmlExtensions
{
    public static MvcHtmlString RadioButtonForEnum<TModel, TProperty>(
        this HtmlHelper<TModel> htmlHelper,
        Expression<Func<TModel, TProperty>> expression
    )
    {
        var metaData = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData);
        if (!metaData.ModelType.IsEnum)
        {
            throw new ArgumentException("This helper is intended to be used with enum types");
        }

        var names = Enum.GetNames(metaData.ModelType);
        var sb = new StringBuilder();

        var fields = metaData.ModelType.GetFields(
            BindingFlags.Static | BindingFlags.GetField | BindingFlags.Public
        );

        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();
            var field = fields.Single(f => f.Name == name);
            var label = name;
            var display = field
                .GetCustomAttributes(typeof(DisplayAttribute), false)
                .OfType<DisplayAttribute>()
                .FirstOrDefault();
            if (display != null)
            {
                label = display.GetName();
            }

            sb.AppendFormat(
                "<label for=\"{0}\">{1}</label> {2}",
                id,
                HttpUtility.HtmlEncode(label),
                radio
            );
        }
        return MvcHtmlString.Create(sb.ToString());
    }
}

现在,如果您使用DisplayAttribute修饰了一些枚举值,则值将来自资源文件.