在MS Office 64位下使用32位COM插件(Using 32bit COM addin under MS Office 64 bit)

 您可以添加另一个字段到您的ViewModel说SelectedStatus并将其值设置为所需的默认值。 然后你可以使用@ Html.DropDownListFor来显示默认值。 
 
public class ViewModel
{
    public Guid SelectedStatus {get;set;}
    public List<ListStatus> Statuses { get; set; }
}
 
 在你的控制器中 
 
[HttpGet]
public ActionResult Index()
{
    List<ListStatus> lstStatus = new List<ListStatus>(){
        new ListStatus() { Name="X",StatusID = Guid.NewGuid() },
        new ListStatus() { Name="Y",StatusID = Guid.NewGuid() },
        new ListStatus() { Name="Z",StatusID = Guid.NewGuid() }
    };

    ViewModel objModel = new ViewModel();
    objModel.Statuses  = lstStatus;
    objModel.SelectedStatus = lstStatus[1].StatusID; // Select whatever you want here to be default.

    return View(objModel);
}
 
 在你看来 
 
@Html.DropDownListFor(m=>m.SelectedStatus, Model.Statuses.Select(s => new SelectListItem() { Text = s.Name, Value = s.StatusID.ToString() }), new { @class = "medium", required = true })
 
 这里是小提琴： https ： //dotnetfiddle.net/vTJhaj 

You can add another field to your ViewModel say SelectedStatus and set its value to your desired default. Then you can use @Html.DropDownListFor to display default value. 
 
public class ViewModel
{
    public Guid SelectedStatus {get;set;}
    public List<ListStatus> Statuses { get; set; }
}
 
In your controller 
 
[HttpGet]
public ActionResult Index()
{
    List<ListStatus> lstStatus = new List<ListStatus>(){
        new ListStatus() { Name="X",StatusID = Guid.NewGuid() },
        new ListStatus() { Name="Y",StatusID = Guid.NewGuid() },
        new ListStatus() { Name="Z",StatusID = Guid.NewGuid() }
    };

    ViewModel objModel = new ViewModel();
    objModel.Statuses  = lstStatus;
    objModel.SelectedStatus = lstStatus[1].StatusID; // Select whatever you want here to be default.

    return View(objModel);
}
 
In your view
 
@Html.DropDownListFor(m=>m.SelectedStatus, Model.Statuses.Select(s => new SelectListItem() { Text = s.Name, Value = s.StatusID.ToString() }), new { @class = "medium", required = true })
 
Here is fiddle : https://dotnetfiddle.net/vTJhaj