asp.net mvc selectlist

Question

通过使用selectlist我怎么输入请选择。有没有办法

GrpDown = new SelectList(_db.Groups.Where(m => m.vcr_GroupName != "SuperAdmin" && m.int_Priority >= Authorization.Priority && m.bit_Active == true).ToList(), "int_GroupId", "vcr_GroupName"); 

Answer 1

我希望我已经否定了你的问题。尝试沿着这些方向：

var ListOfThings = _db.Groups.Where(m => m.vcr_GroupName != "SuperAdmin" && m.int_Priority >= Authorization.Priority && m.bit_Active == true).ToList(); 

ListOfThings.Insert(0, "Please Select"); // <-- Here you want to enter an item that has the caption "Please Select" 

GrpDown = new SelectList(ListOfThings, "int_GroupId", "vcr_GroupName");