How to Logout User in ASP.NET Membership?
If you use ASP.NET membership, then you need an option to logout user on click to Logout button. To avoid repetitive code you can place this in master page. Here is an example:
[ C# ]
using System;
// We need this namespace to use FormsAuthentication class
using System.Web.Security;
public partial class MasterPages_DeafultMasterPage : System.Web.UI.MasterPage
{
protected void btnLogout_Click(object sender, EventArgs e)
{
// Sign out
FormsAuthentication.SignOut();
// Now need to redirect user to login page
// or to the same URL
Response.Redirect(Request.Url.AbsoluteUri);
}
}
[ VB.NET ]
' We need this namespace to use FormsAuthentication class
Imports System.Web.Security
Partial Class VB_DefaultMasterPage
Inherits System.Web.UI.MasterPage
Protected Sub btnLogout_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnLogout.Click
' Sign out
FormsAuthentication.SignOut()
' Now need to redirect user to login page
' or to the same URL
Response.Redirect(Request.Url.AbsoluteUri)
End Sub
End Class
The above code will logout current user and redirect to same page. Instead of that, you can redirect user to login page. Replace line:
Response.Redirect(Request.Url.AbsoluteUri);
with
FormsAuthentication.RedirectToLoginPage();
Of course, you can also use Response.Redirect to redirect to Login page in form like Response.Redirect("~/Login.aspx") but this way with RedirectToLoginPage() method looks easier and less hard coded.
Related articles:
1. How to Find If User Is Logged In?
2. How To Change User's Email In ASP.NET Membership?
