Take web site down for maintenance
I have a requirement in a web application that I am developing in VB.Net to have the ability to take the site offline for maintenance. I have that part down by storing a Boolean value in a table and checking it on the page load of the pages that should be offline. This works fine as it only allows people in the proper roles to access the necessary pages.
However, I need to warn the users that the site is going down in specified amount of time regardless of what page they are on and then have it be unavailable. Can someone direct me on the best way to give the logged in users a pop-up message or other visual notification that they need to save their work because the site is going down?
However, I need to warn the users that the site is going down in specified amount of time regardless of what page they are on and then have it be unavailable. Can someone direct me on the best way to give the logged in users a pop-up message or other visual notification that they need to save their work because the site is going down?
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
Thanks again for the kick in the brain to get me going!
You're welcome. We all need those sometimes. Glad I could help.
ASKER
1) I put a label on the master page and pulled the datetime / status from the database. This is to display a message to the user what time the system would be unavailable.
Dim implementTime As Date?
Dim maintenance As Boolean
Dim projectDBO As New ProjectDataBO
Dim dataset2 As SqlDataReader = projectDBO.getIsMaintenanc
Dim message As String = "The system is going down for maintenance at "
Dim message2 As String = ". Please save your work and log out"
If dataset2.HasRows Then
While dataset2.Read()
If Not dataset2("implementTime") Is DBNull.Value Then
implementTime = dataset2("implementTime")
maintenance = dataset2("IsMaintenanceMod
End If
End While
End If
If maintenance = True Then
Me.lblMessage.Font.Bold = True
Me.lblMessage.BackColor = Drawing.Color.Red
Me.lblMessage.Text = message & implementTime.ToString
End If
2) I updated my previous IsMaintenanceMode code on my configurations page to pull in the date as well. This returns true when the date has passed and the flag is true in the database. I added a date field in my database to determine what time to set the system in maintenance mode.
Public Shared ReadOnly Property isMaintenanceMode() As Boolean
Get
Dim maintenance As Boolean
Dim implementTime As Date?
Dim projectDBO As New ProjectDataBO
Dim dataset As SqlDataReader = projectDBO.getIsMaintenanc
If dataset.HasRows Then
While dataset.Read()
maintenance = dataset("IsMaintenanceMode
If Not dataset("implementTime") Is DBNull.Value Then
implementTime = dataset("implementTime")
End If
End While
End If
If implementTime > Now() OrElse implementTime Is Nothing Then
Return False
Else
Return maintenance
End If
End Get
End Property
3) Then on each page that needs to be inactive, I add this code. I was already doing this step, so it doesn't require changes across the pages that I have completed. MAINTENANCE_PAGE is a constant that maps to the true URL.
If Configurations.isMaintenan
HttpContext.Current.Respon
End If
A lot of this is because the supervisor that will perform certain functions needs to ensure that the data isn't being updated while they are working. Plus it gives anyone that is working a few minutes before the system is locked. They get the red warning label across the top of the page and after the time has elapsed, the system locks them out.