如何才能默认选择value=0以外的SelectListItem？

// 创建一个SelectList对象
List<SelectListItem> selectList = new List<SelectListItem>();

// 添加SelectListItem
selectList.Add(new SelectListItem { Value = "0", Text = "请选择" });
selectList.Add(new SelectListItem { Value = "1", Text = "选项1" });
selectList.Add(new SelectListItem { Value = "2", Text = "选项2" });

// 找到value不等于0的SelectListItem并设置Selected属性
var selectedItem = selectList.FirstOrDefault(item => item.Value != "0");
if (selectedItem != null)
{
    selectedItem.Selected = true;
}

// 将SelectList对象传递给前端视图
ViewBag.SelectList = selectList;

@Html.DropDownListFor(model => model.SelectedValue, (IEnumerable<SelectListItem>)ViewBag.SelectList, "请选择")