FormsAuthentication.RedirectToLoginPage Método
Definição
Redireciona o navegador para a URL de logon.Redirects the browser to the login URL.
Sobrecargas
| RedirectToLoginPage() |
Redireciona o navegador para a URL de logon.Redirects the browser to the login URL. |
| RedirectToLoginPage(String) |
Redireciona o navegador para a URL de logon com a cadeia de caracteres de consulta especificada.Redirects the browser to the login URL with the specified query string. |
Exemplos
O exemplo de código a seguir limpa o cookie de autenticação de formulários usando o SignOut método e redireciona o usuário para a página de logon usando o RedirectToLoginPage método.The following code example clears the forms-authentication cookie using the SignOut method and redirects the user to the login page using the RedirectToLoginPage method.
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Web.Security" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
public void LoginLink_OnClick(object sender, EventArgs args)
{
FormsAuthentication.SignOut();
FormsAuthentication.RedirectToLoginPage();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
Welcome <b><%=User.Identity.Name%></b>. Not <b><%=User.Identity.Name%></b>?
Click <asp:LinkButton id="LoginLink" Text="here"
OnClick="LoginLink_OnClick" runat="server" />
to sign in.
<!-- Page Contents -->
</form>
</body>
</html>
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Web.Security" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Public Sub LoginLink_OnClick(sender As Object, args As EventArgs)
FormsAuthentication.SignOut()
FormsAuthentication.RedirectToLoginPage()
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
Welcome <b><%=User.Identity.Name%></b>. Not <b><%=User.Identity.Name%></b>?
Click <asp:LinkButton id="LoginLink" Text="here"
OnClick="LoginLink_OnClick" runat="server" />
to sign in.
<!-- Page Contents -->
</form>
</body>
</html>
Comentários
O RedirectToLoginPage método redireciona o navegador para o LoginUrl .The RedirectToLoginPage method redirects the browser to the LoginUrl.
O RedirectToLoginPage método não limpa o cookie de autenticação de formulários.The RedirectToLoginPage method does not clear the forms-authentication cookie. Você pode usar o RedirectToLoginPage método em conjunto com o SignOut método para fazer logon de um usuário e permitir que um usuário diferente faça logon.You can use the RedirectToLoginPage method in conjunction with the SignOut method to log one user out and allow a different user to log in.
Ao contrário do HttpResponse.Redirect método, esse método não encerra a solicitação chamando HttpResponse.End .Unlike the HttpResponse.Redirect method, this method does not end the request by calling HttpResponse.End. Isso significa que o código que segue a RedirectToLoginPage chamada do método será executado.This means that code that follows the RedirectToLoginPage method call will run.
RedirectToLoginPage()
Redireciona o navegador para a URL de logon.Redirects the browser to the login URL.
public:
static void RedirectToLoginPage();
public static void RedirectToLoginPage ();
static member RedirectToLoginPage : unit -> unit
Public Shared Sub RedirectToLoginPage ()
Exemplos
O exemplo de código a seguir limpa o cookie de autenticação de formulários usando o SignOut método e redireciona o usuário para a página de logon usando o RedirectToLoginPage método.The following code example clears the forms-authentication cookie using the SignOut method and redirects the user to the login page using the RedirectToLoginPage method.
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Web.Security" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
public void LoginLink_OnClick(object sender, EventArgs args)
{
FormsAuthentication.SignOut();
FormsAuthentication.RedirectToLoginPage();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
Welcome <b><%=User.Identity.Name%></b>. Not <b><%=User.Identity.Name%></b>?
Click <asp:LinkButton id="LoginLink" Text="here"
OnClick="LoginLink_OnClick" runat="server" />
to sign in.
<!-- Page Contents -->
</form>
</body>
</html>
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Web.Security" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Public Sub LoginLink_OnClick(sender As Object, args As EventArgs)
FormsAuthentication.SignOut()
FormsAuthentication.RedirectToLoginPage()
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
Welcome <b><%=User.Identity.Name%></b>. Not <b><%=User.Identity.Name%></b>?
Click <asp:LinkButton id="LoginLink" Text="here"
OnClick="LoginLink_OnClick" runat="server" />
to sign in.
<!-- Page Contents -->
</form>
</body>
</html>
Comentários
O RedirectToLoginPage método redireciona o navegador para o LoginUrl .The RedirectToLoginPage method redirects the browser to the LoginUrl.
O RedirectToLoginPage método não limpa o cookie de autenticação de formulários.The RedirectToLoginPage method does not clear the forms-authentication cookie. Você pode usar o RedirectToLoginPage método em conjunto com o SignOut método para fazer logon de um usuário e permitir que um usuário diferente faça logon.You can use the RedirectToLoginPage method in conjunction with the SignOut method to log one user out and allow a different user to log in.
Aplica-se a
RedirectToLoginPage(String)
Redireciona o navegador para a URL de logon com a cadeia de caracteres de consulta especificada.Redirects the browser to the login URL with the specified query string.
public:
static void RedirectToLoginPage(System::String ^ extraQueryString);
public static void RedirectToLoginPage (string extraQueryString);
static member RedirectToLoginPage : string -> unit
Public Shared Sub RedirectToLoginPage (extraQueryString As String)
Parâmetros
- extraQueryString
- String
A cadeia de caracteres de consulta para incluir com a URL de redirecionamento.The query string to include with the redirect URL.
Exemplos
O exemplo de código a seguir limpa o cookie de autenticação de formulários usando o SignOut método e redireciona o usuário para a página de logon usando o RedirectToLoginPage método.The following code example clears the forms-authentication cookie using the SignOut method and redirects the user to the login page using the RedirectToLoginPage method.
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Web.Security" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
public void LoginLink_OnClick(object sender, EventArgs args)
{
FormsAuthentication.SignOut();
FormsAuthentication.RedirectToLoginPage(GetQueryString());
}
private string GetQueryString()
{
string queryString = "";
NameValueCollection qs = Request.QueryString;
foreach (string key in qs.AllKeys)
foreach (string value in qs.GetValues(key))
queryString += Server.UrlEncode(key) + "=" + Server.UrlEncode(value) + "&";
return queryString.TrimEnd('&');
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
Welcome <b><%=User.Identity.Name%></b>. Not <b><%=User.Identity.Name%></b>?
Click <asp:LinkButton id="LoginLink" Text="here"
OnClick="LoginLink_OnClick" runat="server" />
to sign in.
<!-- Page Contents -->
</form>
</body>
</html>
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Web.Security" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Public Sub LoginLink_OnClick(sender As Object, args As EventArgs)
FormsAuthentication.SignOut()
FormsAuthentication.RedirectToLoginPage(GetQueryString())
End Sub
Private Function GetQueryString() As String
Dim queryString As String = ""
Dim qs As NameValueCollection = Request.QueryString
For Each key As String In qs.AllKeys
For Each value As String In qs.GetValues(key)
queryString &= Server.UrlEncode(key) & "=" & Server.UrlEncode(value) & "&"
Next
Next
Return queryString.TrimEnd("&")
End Function
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
Welcome <b><%=User.Identity.Name%></b>. Not <b><%=User.Identity.Name%></b>?
Click <asp:LinkButton id="LoginLink" Text="here"
OnClick="LoginLink_OnClick" runat="server" />
to sign in.
<!-- Page Contents -->
</form>
</body>
</html>
Comentários
O RedirectToLoginPage método redireciona o navegador para o LoginUrl e inclui o extraQueryString valor como o QueryString para a URL redirecionada.The RedirectToLoginPage method redirects the browser to the LoginUrl and includes the extraQueryString value as the QueryString for the redirected URL.
O RedirectToLoginPage método não limpa o cookie de autenticação de formulários.The RedirectToLoginPage method does not clear the forms-authentication cookie. Você pode usar o RedirectToLoginPage método em conjunto com o SignOut método para fazer logon de um usuário e permitir que um usuário diferente faça logon.You can use the RedirectToLoginPage method in conjunction with the SignOut method to log one user out and allow a different user to log in.