DropDownListFor 顯示資料庫值

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Controller public ActionResult Edit(int id) { ViewBag.SiteTypeList = SF.CreatDropDownList(7); return View(PAR.GetPARByID(id)); } View id = "ID" 會自動對應資料庫值 @Html.DropDownListFor(m => m.SiteID, (SelectList)ViewBag.SiteTypeList, new { id = "ID" }) Model public PARColumn GetPARByID(int id) { using (AbobSysEntities db = new AbobSysEntities()) { var query = db.ProductAbnormalRecord.Where(f => f.ID == id).First(); return new PARColumn { SiteID = Convert.ToString(query.SiteID), WorkOrderNum = query.WorkOrderNum }; } } public class PARColumn { public string SiteID { get; set; } }