c# – 带整数字符串的枚举

我有一个这样的公开枚举：

public enum occupancyTimeline
{
    TwelveMonths,FourteenMonths,SixteenMonths,EighteenMonths
}

我将使用一个DropDown菜单,如下所示：

@Html.DropDownListFor(model => model.occupancyTimeline,new SelectList(Enum.GetValues(typeof(CentralParkLCPreview.Models.occupancyTimeline))),"")

现在我正在寻找我的价值观

12个月,14个月,16个月,18个月,而不是TweleveMonths,18个月

我该如何做到这一点？

解决方法

你可以检查这个 link

他的解决方案是针对Asp.NET,但是通过简单的修改,您可以在MVC中使用它

/// <span class="code-SummaryComment"><summary></span>
/// Provides a description for an enumerated type.
/// <span class="code-SummaryComment"></summary></span>
[AttributeUsage(AttributeTargets.Enum | AttributeTargets.Field,AllowMultiple = false)]
public sealed class EnumDescriptionAttribute :  Attribute
{
   private string description;

   /// <span class="code-SummaryComment"><summary></span>
   /// Gets the description stored in this attribute.
   /// <span class="code-SummaryComment"></summary></span>
   /// <span class="code-SummaryComment"><value>The description stored in the attribute.</value></span>
   public string Description
   {
      get
      {
         return this.description;
      }
   }

   /// <span class="code-SummaryComment"><summary></span>
   /// Initializes a new instance of the
   /// <span class="code-SummaryComment"><see cref="EnumDescriptionAttribute"/> class.</span>
   /// <span class="code-SummaryComment"></summary></span>
   /// <span class="code-SummaryComment"><param name="description">The description to store in this attribute.</span>
   /// <span class="code-SummaryComment"></param></span>
   public EnumDescriptionAttribute(string description)
       : base()
   {
       this.description = description;
   }
}

帮助者将允许您构建Key和Value列表

/// <span class="code-SummaryComment"><summary></span>
/// Provides a static utility object of methods and properties to interact
/// with enumerated types.
/// <span class="code-SummaryComment"></summary></span>
public static class EnumHelper
{
   /// <span class="code-SummaryComment"><summary></span>
   /// Gets the <span class="code-SummaryComment"><see cref="DescriptionAttribute" /> of an <see cref="Enum" /></span>
   /// type value.
   /// <span class="code-SummaryComment"></summary></span>
   /// <span class="code-SummaryComment"><param name="value">The <see cref="Enum" /> type value.</param></span>
   /// <span class="code-SummaryComment"><returns>A string containing the text of the</span>
   /// <span class="code-SummaryComment"><see cref="DescriptionAttribute"/>.</returns></span>
   public static string GetDescription(Enum value)
   {
      if (value == null)
      {
         throw new ArgumentNullException("value");
      }

      string description = value.ToString();
      FieldInfo fieldInfo = value.GetType().GetField(description);
      EnumDescriptionAttribute[] attributes =
         (EnumDescriptionAttribute[])
       fieldInfo.GetCustomAttributes(typeof(EnumDescriptionAttribute),false);

      if (attributes != null && attributes.Length > 0)
      {
         description = attributes[0].Description;
      }
      return description;
   }

   /// <span class="code-SummaryComment"><summary></span>
   /// Converts the <span class="code-SummaryComment"><see cref="Enum" /> type to an <see cref="IList" /> </span>
   /// compatible object.
   /// <span class="code-SummaryComment"></summary></span>
   /// <span class="code-SummaryComment"><param name="type">The <see cref="Enum"/> type.</param></span>
   /// <span class="code-SummaryComment"><returns>An <see cref="IList"/> containing the enumerated</span>
   /// type value and description.<span class="code-SummaryComment"></returns></span>
   public static IList ToList(Type type)
   {
      if (type == null)
      {
         throw new ArgumentNullException("type");
      }

      ArrayList list = new ArrayList();
      Array enumValues = Enum.GetValues(type);

      foreach (Enum value in enumValues)
      {
         list.Add(new keyvaluePair<Enum,string>(value,GetDescription(value)));
      }

      return list;
   }
}

那么你将枚举你的枚举

public enum occupancyTimeline
{
    [EnumDescriptionAttribute ("12 months")]
    TwelveMonths,[EnumDescriptionAttribute ("14 months")]
    FourteenMonths,[EnumDescriptionAttribute ("16 months")]
    SixteenMonths,[EnumDescriptionAttribute ("18 months")]
    EighteenMonths
}

您可以在控制器中使用它来填充下拉列表

ViewBag.occupancyTimeline =new SelectList( EnumHelper.ToList(typeof(occupancyTimeline)),"Value","Key");

在您看来,您可以使用以下内容

@Html.DropdownList("occupancyTimeline")

希望会帮助你

原文地址：https://www.jb51.cc/csharp/95904.html