asp.net-mvc - 如何更改下拉列表的文本？

Question

我的视图中有一个下拉列表

<div class="editor-label">
                    @Html.LabelFor(model => model.SubProcessId, "SubProcess")
                </div>
                <div class="editor-field">
                    @Html.DropDownList("SubProcessId", ViewBag.SubProcessId as SelectList)
                    @Html.ValidationMessageFor(model => model.SubProcessId)
                </div>

有这个模型

namespace CTTModel
{
    using System;
    using System.Collections.Generic;

    public partial class **SubProcess**
    {
        public SubProcess()
        {
            this.Risks = new HashSet<Risk>();
        }

        public int Id { get; set; }
        public string Name { get; set; }
        public int ProcessId { get; set; }
        public string Description { get; set; }

        public virtual **Process** Process { get; set; }
        public virtual ICollection<Risk> Risks { get; set; }
    }
}

通过此控制器出现在视图中

public ActionResult Create()
        {
            try
            {
                // Risk
                **ViewBag.SubProcessId    = new SelectList(_db.SubProcesses, "Id", "Name", "Process");**


                ViewBag.RiskSeverityId  = new SelectList(_db.RiskSeverities, "Id", "Name");
                ViewBag.RiskFrequencyId = new SelectList(_db.RiskFrequencies, "Id", "Name");
                ViewBag.RiskRatingId    = new SelectList(_db.RiskRatings, "Id", "Name");
                ViewBag.RiskType1Id     = new SelectList(_db.RiskType1, "Id", "Name");
                ViewBag.RiskType2Id     = new SelectList(_db.RiskType2, "Id", "Name");

                //Test
                ViewBag.RegionLevelId   = new SelectList(_db.RegionLevels, "Id", "Name");
            }
            catch (Exception ex)
            {
                throw;
            }

            return View();
        }

这些是下拉列表中显示的 suprocesses

Past due collection
Dealer audits
Credit Watch classification
Reconciliation
Control

每个子进程都可以拥有进程

Portfolio Management
Finance
Test Modeling

现在我被要求在下拉列表中显示的不是子进程名称，而是

     "<process name> - <subprocess name>"   
Portfolio Management - Reconciliation, for example

我有最微弱的想法如何做到这一点。有任何想法吗？？

Answer 1

var subProcessList = _db.SubProcesses
                        .Select(x => new 
                        { 
                            Id = x.Id,
                            Name = string.Format("{0} - {1}", x.Process.Name, x.Name) 
                        })
                        .ToList();

ViewBag.SubProcessId = new SelectList(subProcessList, "Id", "Name");