如何在模型中硬编码SelectList？

public class YourModel
{
    public SelectList YourSelectList { get; set; }
    // 其他属性...
}

public IActionResult YourAction()
{
    YourModel model = new YourModel();
    
    // 构造SelectList对象并为YourSelectList属性赋值
    model.YourSelectList = new SelectList(new[]
    {
        new { Value = "1", Text = "选项1" },
        new { Value = "2", Text = "选项2" },
        new { Value = "3", Text = "选项3" }
    }, "Value", "Text", "2"); // 最后一个参数为默认选中项的值
    
    return View(model);
}

public IActionResult YourAction()
{
    YourModel model = new YourModel();
    
    // 使用SelectList静态方法创建SelectList对象并为YourSelectList属性赋值
    model.YourSelectList = SelectListHelper.CreateYourSelectList("2"); // 调用静态方法，传入参数
    
    return View(model);
}

@model YourModel

@Html.DropDownListFor(m => m.PropertyName, Model.YourSelectList, "请选择")

@model YourModel

<select id="PropertyName" name="PropertyName">
    @foreach (var item in Model.YourSelectList)
    {
        <option value="@item.Value" @(item.Value == Model.PropertyName ? "selected" : "")>@item.Text</option>
    }
</select>