How can you create and manually set a custom Forms Authentication ticket?

Question

ICSM Computer · Answer

To create and manually set a custom Forms Authentication ticket in ASP.NET, you basically:
Create a FormsAuthenticationTicket object with your custom data.Encrypt the ticket.Create a cookie containing the encrypted ticket.Add the cookie to the HTTP response.
Why create a custom ticket?
To store extra user info in the ticket (like roles or user ID).To control ticket expiration and other properties.To avoid relying only on SetAuthCookie or RedirectFromLoginPage.
Step-by-step example in C#:
// 1. Create the ticket
var ticket = new FormsAuthenticationTicket(
    1,                      // Ticket version
    username,               // Username
    DateTime.Now,           // Issue date
    DateTime.Now.AddMinutes(30),  // Expiration date
    isPersistent,           // Persistent cookie?
    "UserRole=Admin;UserID=123", // User data (custom info)
    FormsAuthentication.FormsCookiePath // Cookie path
);
// 2. Encrypt the ticket
string encryptedTicket = FormsAuthentication.Encrypt(ticket);
// 3. Create the cookie with the encrypted ticket
var authCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket)
{
    HttpOnly = true,  // Prevent client-side scripts from accessing the cookie
    Secure = FormsAuthentication.RequireSSL,  // Set secure flag if SSL required
    Path = FormsAuthentication.FormsCookiePath
};
// If the ticket is persistent, set the cookie expiration
if (isPersistent)
{
    authCookie.Expires = ticket.Expiration;
}
// 4. Add the cookie to the response
Response.Cookies.Add(authCookie);
What happens next?
On subsequent requests, ASP.NET automatically decrypts the cookie and recreates the
FormsIdentity with your ticket data.You can access the custom user data like this:
var identity = (FormsIdentity)User.Identity;
string userData = identity.Ticket.UserData;
// Parse userData string as needed
and

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How can you create and manually set a custom Forms Authentication ticket?

ICSM Computer

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1 Answers

Why create a custom ticket?

Step-by-step example in C#:

What happens next?

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