這就是我從我的模型中實現下拉列表的方式。我只是想檢查這是否是正確的方法還是有更簡單的方法？看起來相當復雜。我的清單型號：public class ApplicationRolesDropdownListDetailViewModel{ public String RoleId { get; set; } public String ApplicationRoleName { get; set; }}進入我的視圖的視圖模型public class ApplicationRolesDropdownListViewModel{ public SelectList Roles { get; set; }}獲取項目列表并將其放在視圖中的下拉列表中的控制器： public ActionResult NewRole() { var applicationRoles = applicationRolesData.GetAllApplicationRoles(); ApplicationRolesDropdownListViewModel ardlvm = new ApplicationRolesDropdownListViewModel(); ardlvm.Roles = new SelectList(applicationRoles, "RoleId", "ApplicationRoleName"); return View("~/Views/Users/Modals/AddRole.cshtml", ardlvm); }我的觀點： <div class="form-group"> @Html.DropDownListFor(m => m.Roles,Model.Roles, new { @id = "role", @class = "dropdown" }) </div>此外，當我通過 javascript 從列表中選擇一個項目時，我似乎無法獲得 RoleId。編輯：添加了我的 GetApplicationRoles public List<ApplicationRolesDropdownListViewModel > GetAllApplicationRoles() { List<ApplicationRolesDropdownListViewModel > data = new List<ApplicationRolesDropdownListViewModel >(); try { var applicationRoles = dbContext.AspNetRolesExtendedDetails.ToList(); data = (from ar in applicationRoles join a in dbContext.AspNetApplications on ar.ApplicationId equals a.Id select new ApplicationRolesDropdownListViewModel { RoleId = ar.Id, ApplicationRoleName = ar.Name + " ( " + a.Name + " )" }).ToList(); } catch (Exception e) { logger.Error(e, AspNetEventLogs.NotFound); } return data; }
1 回答
慕運維8079593
TA貢獻1876條經驗 獲得超5個贊
像這樣試試
視圖模型：
public class ApplicationRolesViewModel
{
// Display Attribute will appear in the Html.LabelFor
[Display(Name = "User Role")]
public string RoleId { get; set; }
public IEnumerable<SelectListItem> Roles { get; set; }
}
控制器：
public ActionResult NewRole()
{
var roleData = new IEnumerable<SelectListItem>();
applicationRolesData.GetAllApplicationRoles().Foreach(x =>
roleData.Add( new SelectListItem
{
Value = x.RoleId.ToString(),
Text = x.ApplicationRoleName
});
);
ApplicationRolesViewModel ardlvm = new ApplicationRolesViewModel();
ardlvm.Roles = new SelectList(roleData , "Value", "Text")
return View("~/Views/Users/Modals/AddRole.cshtml", ardlvm);
}
查看：
@model ApplicationRolesViewModel
@Html.LabelFor(m => m.RoleId)
@Html.DropDownListFor(m => m.RoleId, Model.Roles)
并獲取當前選擇的下拉列表值Jquery：
$('#RoleId').val();
要獲取當前選定的文本：
$('#RoleId:selected').text();
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