帶參跳轉其他controller

public class GoToOtherController : Controller
{
    public ActionResult Index()
    {
        var vm = new GetValueFromOtherViewModel
        {
            Value="123"
        };
        TempData["GetValueFromOther"] = vm;
        return RedirectToAction("Index", "GetValueFromOther");
    }
}

public class GetValueFromOtherController : Controller
{
    public ActionResult Index()
    {
        var v = TempData["GetValueFromOther"] as GetValueFromOtherViewModel;
        return Json(v.Value,JsonRequestBehavior.AllowGet);
    }
}

public class GetValueFromOtherViewModel
{
    public string Value { get; set; }
}

參考資料

Redirect in a .NET API action filter