Hi
I have an application where in im preventing multiple login by same user.If user tries to login from another webpage/machine(when already logged in anolther) then a confirm box appears asking whether he needs to logout the previous session or not,if he clicks "yes" then the previous sessions shud be logged off.Im not able to logout the previous session however the code is preventing multiple login but how can i logoff the previous session n redirect user to main page with present session
He is the code
In loginButton_Click(after authentication)
string sKey = loginControl.UserName + loginControl.Password;
string sUser = Convert.ToString(Cache[sKey]);
if (sUser == null || sUser == String.Empty||sUser=="")
{
TimeSpan SessTimeOut = new TimeSpan(0, 0, HttpContext.Current.Session.Timeout, 0, 0);
HttpContext.Current.Cache.Insert(sKey, sKey, null, DateTime.MaxValue, SessTimeOut, System.Web.Caching.CacheItemPriority.NotRemovable, null);
Session["user"] = loginControl.UserName + loginControl.Password;
Response.Redirect("MainPage.aspx");
}
else
{
Response.Write("<script>if(window.confirm('You have already Logged In.Do you want to sign off the previous Session?')){} else{window.location.href='login.aspx'}</script>");
return;
}
In Global.aspx page
//==========================================
protected void Application_PreRequestHandlerExecute(Object sender, EventArgs e)
{
if (System.Web.HttpContext.Current.Session != null)
{
if (Session["user"] != null)
{
string sKey = (string)Session["user"]; string sUser = (string)HttpContext.Current.Cache[sKey];
}
else
{
foreach (DictionaryEntry de in HttpContext.Current.Cache)
{
HttpContext.Current.Cache.Remove((string)de.Key);
}
}
}
}
Please Guide
Regards
Prarthana Iyer
John Smith
03-Jan-2013Before logon you will have to check column value (If user loginstatus is true then ask him to logout or continue)
prarthana iyer
02-Jan-2013Multiple Login (By same user)
User already logged in a machine/browser and tries to re-login from another machine/browser(with same userid n password) .
user's session activity in Db
I had tot abt this ,however dint implement,got the above code for preventing multiple login but im unable to logoff the user's previous session
John Smith
02-Jan-2013