How to create remember me checkbox to remember session until user Logout explicitly

Question

Aryan Kumar · Answer

Sure, I can help you with that. Here are the steps on how to create a remember me check box to remember session until user logout explicitly:

Create a new ASP.NET Web Forms project.
Add a CheckBox control to the form.
In the code behind file, add the following code:

VB.Net

Protected Sub CheckBox1_CheckedChanged(sender As Object, e As EventArgs) Handles CheckBox1.CheckedChanged
    ' If the checkbox is checked, set the remember me cookie.
    If CheckBox1.Checked Then
        Dim cookie As HttpCookie = New HttpCookie("RememberMe")
        cookie.Value = "1"
        cookie.Expires = DateTime.Now.AddDays(30)
        Response.Cookies.Add(cookie)
    Else
        ' If the checkbox is unchecked, delete the remember me cookie.
        Dim cookie As HttpCookie = Response.Cookies("RememberMe")
        Response.Cookies.Remove(cookie)
    End If
End Sub

Run the project. When you check the checkbox, a cookie will be set that will remember the user's session for 30 days. When the user logs out, the cookie will be deleted.

Here is an explanation of the code:

The CheckedChanged event is raised when the Checked property of the CheckBox control changes.
The HttpCookie class represents a cookie.
The Value property of the HttpCookie class sets the value of the cookie.
The Expires property of the HttpCookie class sets the expiration date of the cookie.
The Cookies property of the Response object gets the collection of cookies for the current request.
The Add method of the Cookies property adds a cookie to the collection.
The Remove method of the Cookies property removes a cookie from the collection.

Sumit Kesarwani · Answer

Hi John,

Simply pass true as second parameter when emitting the authentication cookie:

FormsAuthentication.RedirectFromLoginPage(Username, true)

This will create a persistent authentication cookie on the client whose expiration is handled by the timeout property in your web.config:

<forms
   loginUrl="~/login.aspx"
   defaultUrl="~/default.aspx"
   protection="All"
   timeout="3600"
</forms>

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How to create remember me checkbox to remember session until user Logout explicitly

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