Question

我们说我有这样的枚举：

public enum ContactPhoneType
{
    [Display(Name = "")]
    None = 0,

    [Display(Name = "Home Phone")]
    HomePhone = 1,

    [Display(Name = "Cell/Mobile Phone")]
    CellMobile = 2,

    [Display(Name = "Work Phone")]
    Work = 3,

    [Display(Name = "Family Member")]
    FamilyMember = 4,

    [Display(Name = "Fax Number")]
    Fax = 5,

    [Display(Name = "Other")]
    Other = 6,
}

我想只显示列表中的前6个。我该如何隐藏最后一个？

为了显示所有项目，我使用了以下代码：

<div class="form-group">
   <label class="col-sm-4 control-label" asp-for="PhoneNumberType"></label>
      <div class="col-sm-6">
        <select asp-for="PhoneNumberType" asp-items="Html.GetEnumSelectList<ContactPhoneType>()" class="form-control"></select>
       </div>
</div>

Answer 1

如果该方法返回一个继承自IEnumerable<T>的集合，您可以使用Take()方法按以下方式选择其前N个元素：

asp-items="Html.GetEnumSelectList<ContactPhoneType>().Take(6)"

希望它有所帮助！

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