asp.net-mvc 在编辑器模板中设置选择列表的默认选择值
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Setting default selected value of selectlist inside an editor template
提问by Aivan Monceller
I have this code to set the default value of my select list:
我有这个代码来设置我的选择列表的默认值：
public ActionResult Register()
{
IList<Country> countryList = _countryRepository.GetAllCountry();
var registerViewModel = new RegisterViewModel
{
CountryId = 52,
CountryList = new SelectList(countryList, "CountryId", "CountryName", "Select Country")
};
return View(registerViewModel);
}
I have this on my view and this works well sets the selected country value to 52:
我认为这很有效，将选定的国家/地区值设置为 52：
<%: Html.DropDownListFor(model => model.CountryId, Model.CountryList ,"Select Country") %>
However when I create an editor template for this, the default value for country is not selected
但是，当我为此创建编辑器模板时，未选择国家/地区的默认值
So, I change my current view to this:
所以，我将我目前的观点改为：
<%: Html.EditorFor(model => model.CountryId,new { countries = Model.CountryList}) %>
Then I create my editor template like this:
然后我像这样创建我的编辑器模板：
<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<System.Int64?>" %>
<%= Html.DropDownList(
String.Empty /* */,
(SelectList)ViewData["countries"],
"Select Country"
)
%>
回答by Aivan Monceller
I have solved this by replacing the code in my controller to :
我通过将控制器中的代码替换为：
CountryList = new SelectList(countryList, "CountryId", "CountryName",52 /*Default Country Id*/)
If you have better solutions, please let me know. I will change accepted answer.
如果您有更好的解决方案，请告诉我。我会改变接受的答案。
回答by WEFX
Add this to your Controller:
将此添加到您的控制器：
ViewData["CountryList"] = new SelectList(_countryRepository.GetAllCountry(), 52);
Then, on the View page, call the dropdown as follows:
然后，在“查看”页面上，按如下方式调用下拉列表：
@Html.DropDownList("Countries", ViewData["CountryList"] as SelectList)
回答by Hari Lakkakula
Different ways to Archive this, This is One way
存档的不同方式，这是一种方式
Step 1: Set the value you nee to be default selected. here I have passed 0 or 2
步骤1：设置您需要默认选择的值。在这里我已经通过了 0 或 2
ViewBag.AssessmentfrezeId = IsUserHavefreeAssessment == false ? 2 : 0;
Step 2:Go to the Cshtml added the selected value like below.
第 2 步：转到 Cshtml 添加如下选定的值。
@Html.DropDownListFor(m => m.TestID, new SelectList(Model.Slots, "Id", "TimeSlot", @ViewBag.AssessmentfrezeId), "--Select--", new { @class = "form-control" })
