MVC控件绑定数据

数据访问层
public object GetListBatch()
{
return db_C56.Traces.Select(p => p.BatchID).Distinct().ToArray();
}

控制器
public ActionResult GetBatch()
{
ResultMessage<object> result = new ResultMessage<object>();
result = busi.GetListBatch();
#region 方式1
string[] arr = result.Data as string[];
List<SelectListItem> select1 = new List<SelectListItem>();
for (int i = 0; i < arr.Length; i++)
{
select1.Add(new SelectListItem
{
Text = arr[i].ToString(),
Value = arr[i].ToString()
});
}
ViewData["selBatch"] = new SelectList(select1, "Value", "Text", "");
#endregion

#region 方式2
ViewData["aaa"] = result.Data;
#endregion

return View();
}

前台页面
方式1
@Html.DropDownList("selBatch")

方式2
<select id="Select1">
@foreach (var arr in ViewData["aaa"] as string[])
{
<option>@arr.ToString()</option>
}
</select>

方式3
ajax页面初始化时绑定下拉类表