刚刚测试过这一点，它的工作原理：

Just tested this, it works:

在你的操作方法：

var selectListItems = new List<SelectListItem>();
selectListItems.Add(new SelectListItem { Text = "Going", Value = bool.TrueString });
selectListItems.Add(new SelectListItem { Text = "Not going", Value = bool.FalseString });
ViewBag.MySelectList = new SelectList(selectListItems, "Value", "Text", viewModel.IsGoing);

在您的视图：

@Html.DropDownList("IsGoing", (SelectList) ViewBag.MySelectList)