使用查询字符串MVC将数组传递给视图

Question

我有多个角色，我需要通过Return RedirectTo Action方法将这些角色传递给另一个视图，

我的代码

string[] roles = new string[] { "Admin", "Supervisor", "Interviewer" };
if (roles.Count() > 1)
{
    return RedirectToAction("LoginAs","Admin",new{@roles = roles});
}

当我在LoginAs视图中这样传递时，会向我显示这样的Url，

http://localhost:33883/Admin/LoginAs?roles=System.String[]

但是没有通过值。

Answer 1

选项1：

    public ActionResult Index()
    {
        string[] roles = new string[] { "Admin", "Supervisor", "Interviewer" };
        var routeParameters = new RouteValueDictionary();
        for (int i = 0; i < roles.Length; i++)
        {
            routeParameters["roles[" + i + "]"] = roles[i];
        }
        return RedirectToAction("Test", "Student", routeParameters);
    }

    public ActionResult Test(string[] roles)
    {
        return View("Index");
    }

输出 -

选项2： 使用TempData

    public ActionResult Index()
    {
        string[] roles = new string[] { "Admin", "Supervisor", "Interviewer" };
        TempData["data"] = roles;
        return RedirectToAction("Test", "Student");
    }

    public ActionResult Test()
    {
        string[] roles = (string[])TempData["data"];
        return View("Index");
    }

输出 -

选项3： 使用Session

    public ActionResult Index()
    {
        string[] roles = new string[] { "Admin", "Supervisor", "Interviewer" };
        Session["data"] = roles;
        return RedirectToAction("Test", "Student");
    }

    public ActionResult Test()
    {
        string[] roles = (string[])Session["data"];
        return View("Index");
    }

输出 -