MVC5:Enum单选按钮,标签为displayname

Question

我有这些枚举

public enum QuestionStart
{
    [Display(Name="Repeat till common match is found")]
    RepeatTillCommonIsFound,

    [Display(Name="Repeat once")]
    RepeatOnce,    

    [Display(Name="No repeat")]
    NoRepeat

}

public enum QuestionEnd
{
    [Display(Name="Cancel Invitation")]
    CancelInvitation,

    [Display(Name="Plan with participants on first available common date")]
    FirstAvailableCommon,

    [Display(Name="Plan with participants on my first available common date")]
    YourFirstAvailableCommon
}

我有一个帮助类来显示枚举中每个字段的所有单选按钮

@model Enum
@foreach (var value in Enum.GetValues(Model.GetType()))
{
    @Html.RadioButtonFor(m => m, value)
    @Html.Label(value.ToString())
    <br/>
}

现在标签设置为值名称,而不是我为值给出的显示名称.

例如:

[Display(Name="Cancel Invitation")]
CancelInvitation

我CancelInvitation旁边有单选按钮.

如何让它显示我给它的显示名称(Cancel Invitation)？

Answer 1

这是解决方案 -

归功于这位非凡的绅士--ThumNet,他为Enum编写了RadioButtonList作为扩展

步骤1 -在Views/Shared/EditorTemplates目录中创建带有以下代码(来自上面引用的代码)的RadioButtonListEnum.cshtml文件(如果不存在,则创建该目录) -

@model Enum

@{
     // Looks for a [Display(Name="Some Name")] or a [Display(Name="Some Name", ResourceType=typeof(ResourceFile)] Attribute on your enum
    Func<Enum, string> getDescription = en =>
    {
        Type type = en.GetType();
        System.Reflection.MemberInfo[] memInfo = type.GetMember(en.ToString());

        if (memInfo != null && memInfo.Length > 0)
        {

            object[] attrs = memInfo[0].GetCustomAttributes(typeof(System.ComponentModel.DataAnnotations.DisplayAttribute),
                                                            false);

            if (attrs != null && attrs.Length > 0)
                return ((System.ComponentModel.DataAnnotations.DisplayAttribute)attrs[0]).GetName();
        }

        return en.ToString();
    };
    var listItems = Enum.GetValues(Model.GetType()).OfType<Enum>().Select(e =>
    new SelectListItem()
    {
        Text = getDescription(e),
        Value = e.ToString(),
        Selected = e.Equals(Model)
    });
    string prefix = ViewData.TemplateInfo.HtmlFieldPrefix;
    int index = 0;
    ViewData.TemplateInfo.HtmlFieldPrefix = string.Empty;

    foreach (var li in listItems)
    {
        string fieldName = string.Format(System.Globalization.CultureInfo.InvariantCulture, "{0}_{1}", prefix, index++);
        <div class="editor-radio">
        @Html.RadioButton(prefix, li.Value, li.Selected, new { @id = fieldName }) 
        @Html.Label(fieldName, li.Text)    
        </div>
    }
    ViewData.TemplateInfo.HtmlFieldPrefix = prefix;
}

然后有你的枚举 -

public enum QuestionEnd
{
    [Display(Name = "Cancel Invitation")]
    CancelInvitation,

    [Display(Name = "Plan with participants on first available common date")]
    FirstAvailableCommon,

    [Display(Name = "Plan with participants on my first available common date")]
    YourFirstAvailableCommon
}

第2步 -创建模型 -

public class RadioEnumModel
{
    public QuestionEnd qEnd { get; set; }
}

第3步 -创建控制器操作 -

    public ActionResult Index()
    {
        RadioEnumModel m = new RadioEnumModel();
        return View(m);
    }

第4步 -创建视图 -

@model MVC.Controllers.RadioEnumModel
@Html.EditorFor(x => x.qEnd, "RadioButtonListEnum")

然后输出将是 -