User Management With help of Session in three steps.

User Management With help of Session in three steps.

Step 1. On login page when userid and password is correct then before redirect to next page write this code...

Session["client"] = TxtUsername.Text;
or
Session["admin"] = TxtUsername.Text;

Step 2. On each page in page_load or if you are using master page then master page's page load write these code...

if (Session["client"] == null)
{
    Response.Redirect("../Default.aspx"); //where default.aspx page is login page.
}

or

if (Session["admin"] == null)
{
    Response.Redirect("../Default.aspx"); //where default.aspx page is login page.
}

It will restrict a unauthorized jump of pages (No client user can see admin pages and no admin page can go to client's page.)

And also restrict unauthenticated users to jump to a page without login.

Step 3. When a person click on logout, before redirect to login page, write these code...where you can put your login page name on place of default.aspx..

Session.Clear();
Response.Redirect("Default.aspx");

I hope your requirement will fulfill with these code.