字典来选择列表的

Question

在MVC我创建一个字典，如下

Dictionary<string, long> activitylist = new Dictionary<string, long>(); 
using (OracleConnection con = AppConn.Connection) 
{ 
    OracleCommand cmd = con.CreateCommand(); 
    cmd.Connection = con; 
    try 
    { 
     con.Open(); 
     cmd.CommandText = "Select activity_id,activity from apps_live.im_activity_types_v where activity_id != 12 order by activity"; 
     OracleDataReader reader = cmd.ExecuteReader(); 
     while (reader.Read()) 
     { 
      activitylist.Add(reader[1].ToString(), Convert.ToInt32(reader[0])); 
     } 
    } 
    catch (Exception e) 
    { 
    } 
    finally 
    { 
     con.Close(); 
    } 
} 

如何将其转化为一个选择列表。我尝试下面的代码，但是当我检查视图它显示值作为["text","value]在selectlist 例如： - [Tom,3]

ViewBag.activity_type = new SelectList(activitylist); 

编辑

我还试图

ViewBag.activity_type = new SelectList(activitylist,"Key","Value"); 

然后在下拉显示3 ..我需要显示汤姆

Answer 1

你很近，试试这个。

ViewBag.activity_type = new SelectList(activitylist, "Key", "Value"); 

如果要在下拉菜单中显示Tom，请交换Key和Value。

ViewBag.activity_type = new SelectList(activitylist, "Value", "Key");