要渲染直接在控制器动作，你可以试试：

To render directly a controller action, you can try :

@ {Html.RenderAction（动作，控制器）; }

@{ Html.RenderAction(Action, Controller); }

要调用你的控制器动作，应该返回一个字符串您的内容。

To invoke your controller action that should be returning a string with your content.

[HttpGet]
public string Action(int id) 
{
   return your context in here
}

不过，我认为这是清洁剂中添加一个Ajax操作返回的数据构建的选择，并有结果后，使用jquery解决方案添加类

However I think it's cleaner to add an Ajax action returning the data for building the select and after having the results, using jquery solution for adding a class (which can be returned in the AJAX response itself)

编辑：澄清：

假设你有项目的集合如下：

Assuming you've got a collection of Item as follows:

class Item {
   public int Value { get; set; }
   public string CssClass { get; set; }
   public string Description{ get; set; }
}
private const string EMPTY_OPTION = "<option value=''></option>";
[HttpGet]
public string Action(int id) 
{
    // Load a collection with all your option's related data
    IQueryable data = LoadSomethingFromDbOrWherever(id);
    // Build output
    StringBuilder sb = new StringBuilder();
    sb.AppendFormat("<select id='foo' name='foo'>");
    sb.AppendFormat(EMPTY_OPTION);
    foreach (Item b in data)
    {
            sb.AppendFormat("<option value='{0}' class='{1}'>{2}</option>",
                            b.Value, b.CssClass, b.Description);
    }
    sb.AppendFormat("</select>");
    return sb.ToString();
}

阿贾克斯选项：

for ajax option:

[HttpGet]
public JsonResult Action(int id) 
{
   //same as above, obtain a collection
    // Load a collection with all your option's related data
    IQueryable data = LoadSomethingFromDbOrWherever(id);
    var jsonData = new
            {
                    from c in data
                    select new
                    {
                        Value= c.Value,
                        CssClass = c.CssClass,
                        Description = c.Desription
                    }).ToArray()
            };
    return Json(jsonData);
}

通过$就调用这一点，并在回调你必须包含所有数据的JavaScript对象，然后使用jQuery建立的选择选项。

Call this via $.ajax and in the callback you'll have a javascript object containing all your data, then use jQuery to build up the select options.

问候