ASP.NET

M_ID   M_Name  M_Status
101       Abhi    1
102       Raj     1

M_ID   M_Name  M_Status
101       Abhi    0
102       Raj     1
101       Jhon    1

M_ID   M_Name  M_Status
102       Raj     1
101       Jhon    1

Dim userId As String = Session("UserID")
        Dim multipleLogin As New Dictionary(Of String, String)()
        multipleLogin = New Dictionary(Of String, String)()
        Application.Lock()
        multipleLogin = DirectCast(Application("MultipleLogin"), Dictionary(Of String, String))
        If (multipleLogin.ContainsKey(userId)) Then
            Response.Output.Write("<script>alert(You have already signed in. Loggin out)</script>")
            Session.Clear()
            Response.Redirect("~/Login.aspx")
        End If

        multipleLogin.Add(userId, Session.SessionID)
        Application("MultipleLogin") = multipleLogin
        Application.UnLock()

Server.MapPath("MyFile.txt") 

developerit wrote:

please make this application with asp.net with c#