如何在MVC中将下拉列表中的项设置为默认值 [英] How to set an item in dropdown list as default in MVC

问题描述

如何在下拉列表中将项目设置为MVC中的默认值

以下代码





Controller.cs

How to set an item in dropdown list as default in MVC
in below code


Controller.cs

var usrModel = new UserRegisterModel();
            Country curid = snwe.Countries.Where(a => a.Country1 == "India").FirstOrDefault(); 
            usrModel.Countries = snwe.Countries.AsEnumerable().Select(C => new SelectListItem
            { 
                Text = C.Country1,
                Value = C.CountryID.ToString().Trim(),
               Selected = C.CountryID == curid.CountryID?true:false
                
            });

View.cshtml

View.cshtml

<li>
    <div class="eq-box">
        <label>@(LocalizationProvider.Current.CountryLabel)*
        <span class="validate-msg">@Html.ValidationMessageFor(m => m.CountryId)</span></label>
        <div class="eq-box-field">
        @Html.DropDownListFor(m => m.CountryId, Model.Countries,  new { @class = "dropdown" })
        </div>
    </div>
</li>

推荐答案

您可以创建一个单独的方法来绑定country dropdown-

You can create a separate method to bind country dropdown-

public static SelectList GetCountries(int selected = 0)
       {
           return new SelectList(Repository.Instance.All<country>(), "Id", "Name", selected);
       }</country>

@Html.DropDownListFor(x=>x.CountryId,GetCountries(x.CountryId),"[Select]")

方法返回类型是 SelectList 所以你不必担心选择项目或任何其他东西。

The method return type is SelectList so you don't need to worry about select item or any other thing.

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