[MVC]產生年度的DropDownList

2012-04-18

系統中常常會使用到年度的DropDownList給使用者選擇，所以可建立公用的Model來使用它!

所以建立一個SearchYearList Class，裡面有StartSearchYear、EndSearchYear及一個GetYearListItems的Method!

public class SearchYearList

    //開始年度

    public static int StartSearchYear = 1997;

    //結尾年度

    public static int EndSearchYear = DateTime.Now.Year;

    /// <summary>

    /// 依開始、結尾年度來產生年度的List

    /// </summary>

    /// <param name="selectedYear"></param>

    /// <returns></returns>

    public static IEnumerable<SelectListItem> GetYearListItems(int? selectedYear)

        var yearList = new List<SelectListItem>();

        for (int i = StartSearchYear; i <= EndSearchYear; i++)

            yearList.Add(new SelectListItem

                Text = i.ToString(),

                Value = i.ToString(),

                Selected = (selectedYear == i)

});

        return yearList;

而在View中using Models，再直接使用它就可以了!

@using MyAP.Models;

@Html.Label("年度")

@Html.DropDownList("cboSearchYear", SearchYearList.GetYearListItems(SearchYearList.StartSearchYear))

@Html.DropDownList("cboEndYear", SearchYearList.GetYearListItems(SearchYearList.EndSearchYear))

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