在asp.net mvc3中如何在回发后保持下拉列表选中项目.
解决方法
做这样的事情：
[HttpPost]
public ActionResult Create(FormCollection collection)
{ if (TryUpdateModel(yourmodel))
{ //your logic
return RedirectToAction("Index");
}
int selectedvalue = Convert.ToInt32(collection["selectedValue"]);
ViewData["dropdownlist"] = new SelectList(getAllEvents.ToList(),"EventID","Name",selectedvalue);// your dropdownlist
return View();
}
并在视图中：
<%: Html.DropDownListFor(model => model.ProductID,(SelectList)ViewData["dropdownlist"])%>
