选择列表的字典

Question

在 MVC 中，我正在创建一个字典，如下所示

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();
    }
}

如何转换为 select 列表。我尝试了下面的代码，但是当我检查视图时，它在 selectlist 中显示为 ["text","value] 的值例如：- [Tom,3]

ViewBag.activity_type = new SelectList(activitylist);

已编辑

我也试过了

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

然后在下拉列表中显示 3..我需要显示 Tom

Answer 1

你很接近，试试这个。

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

如果要在下拉列表中显示 Tom，请交换键和值。

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

选择列表的字典

Dictionary to selectlist

asp.net-mvc

dictionary

selectlist