[ASP.NET MVC] 登入後，自動導向使用者原本Request的Url

練習筆記...


User 驗証未通過，登入後，自動導向User原本Request的Url，三種作法：
1. 使用FormsAuthentication
2. 使用ViewBag
3. 使用讀寫屬性


1. 使用FormsAuthentication
FormsAuthentication.RedirectFromLoginPage(username, false);

2.使用ViewBag

@using (Html.BeginForm("index", "login", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post, new { autocomplete = "off" }))
{
@Html.TextBoxFor(m => m.Account)
@Html.TextBoxFor(m => m.Password)

<button class="btn btn-lg btn-primary btn-block" type="submit">登入</button>
}
[AllowAnonymous, HttpGet]
public ActionResult Index(string returnUrl)
{
ViewBag.ReturnUrl = returnUrl;
return View();
}

3.使用讀寫屬性

public string ReturnUrl { get; set; }


@using (Html.BeginForm("index", "login", new { ReturnUrl = Model.ReturnUrl }, FormMethod.Post, new { autocomplete = "off" }))
{
@Html.TextBoxFor(m => m.Account)
@Html.TextBoxFor(m => m.Password)

<button class="btn btn-lg btn-primary btn-block" type="submit">登入</button>

}

[HttpGet]
public ActionResult Index(string returnUrl)
{
LoginViewModel model = new LoginViewModel() { ReturnUrl = returnUrl };
return View(model);
}


HttpPost ActionResult

[HttpPost]
public ActionResult Index(LoginViewModel data, string returnUrl)
{
//Todo something

if (string.IsNullOrWhiteSpace(returnUrl))
//RedirectToAction default url or other.
else
return Redirect(returnUrl);

return View();
}

Ref:
1. ASP.net MVC整合FormsAuthentication表單驗證登入
https://dotblogs.com.tw/shadow/archive/2014/03/01/144191.aspx
2. Asp.net MVC 實作登入驗證(1)
http://marco.easyusing.com/2013/10/mvc-1-mvc-mvc-mvc5-build-4.html