var companylist=db.Company.Where(m => m.Uid == WebSecurity.CurrentUserId).ToList();
@Html.DropDownListFor(m => m.Company, new SelectList(companylist, "CompanyId", "CompanyName"), new { @class = "sub_select", style = "width:95%;margin: 5px;" })
m => m.Company 爲導航屬性(使用edmx文件外聯的company)