.net - 按特定顺序对 SelectList 进行排序

Question

所以我在这个方法中生成了一个 SelectList :

public static SelectList HolidayDays()
{
    SelectList retval = GenerateKeyValueList<HolidayCity>(HolidayCityHelper.GetFriendlyName, HolidayCity.NotSet);

    //sort list (NY, London....then the rest in order)


    return retval;
}

GenerateKeyValueList<> 方法在此处定义:

public static SelectList GenerateKeyValueList<T>(Func<T, string> nameGetter, T itemToNoInclude) where T : struct, IComparable, IConvertible
{
    List<SelectListItem> list = new List<SelectListItem>();

    var enumList = Enum.GetValues(typeof(T));

    foreach (var curr in enumList)
    {
        T t = (T)curr;
        if (t.Equals(itemToNoInclude) == false)
        {
            list.Add(new SelectListItem() { Text = nameGetter(t), Value = Convert.ToInt32(t).ToString() });
        }
    }
    return new SelectList(list, "Value", "Text");
}

在第一个列出的方法中，我如何在评论中对列表进行排序。我希望列表将“纽约”作为第一个元素，“伦敦”作为第二个元素，然后按字母顺序排列其余元素。

Answer 1

list.OrderBy(i => i.Text == "New York")
    .ThenBy(i => i.Text == "London")
    .ThenBy(i => i.Text);

或者你可以写:

var items = from i in list
            orderby i.Text == "New York", i.Text == "London", i.Text descending
            select i;