steps to get current logged in user ID C#


Step 1: After Login Get User details and store in a list.
List<LoginUsers> loginUsers = new  List<LoginUsers>

step 2: Serialize the list and create cookie

string userData = JsonConvert.SerializeObject(loginUsers);

ValidUser.SetAuthCookie(userData, userMaster.ID);

public static void SetAuthCookie(string userResponse, string userId)
FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1,
false, //pass here true, if want to implement remember me functionality
userResponse); // the path for the cookie
string encryptedTicket = FormsAuthentication.Encrypt(ticket);
HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket);
cookie.HttpOnly = true;

step 3: Open Global.asax and paste this

protected void Application_PostAuthenticateRequest(Object sender, EventArgs e)
HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];
if (authCookie != null && !string.IsNullOrEmpty(authCookie.Value))
FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
if (authTicket != null)
var serializeModel = JsonConvert.DeserializeObject<UserMaster>(authTicket.UserData);
var newUser = new CustomPrinciple(authTicket.Name)
//Mention Required Fields for eg
ID = serializeModel.ID
HttpContext.Current.User = newUser;
step 4:Create a class file with name customprinciple and mention required fields

That’s it Now Application is Authenticated and logged in user ID can be accessed using

var user = (CustomPrinciple)System.Web.HttpContext.Current.User;

string ID = user.ID

for Authentication

if (System.Web.HttpContext.Current.User.Identity.IsAuthenticated)
//your code

That’s It Folks!!! Have a nice day


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