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Tracking page events in ASP.NET Page

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5.00/5 (2 votes)

Sep 28, 2011

CPOL
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A simple way to track the sequence ASP.NET page events.

This is a simple way to track the page events in ASP.NET, I used it to follow the sequence of raising events, also it can be used as a debugging methodology.
  1. First when you create a new asp.net page add this code:
    Dim SeqNo As Integer = 0
    
        Private Sub Page_AbortTransaction(sender As Object, e As System.EventArgs) Handles Me.AbortTransaction
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " - AbortTransaction")
        End Sub
    
        Private Sub Page_CommitTransaction(sender As Object, e As System.EventArgs) Handles Me.CommitTransaction
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " - CommitTransaction")
        End Sub
    
        Private Sub Page_DataBinding(sender As Object, e As System.EventArgs) Handles Me.DataBinding
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  DataBinding")
        End Sub
    
        Private Sub Page_Disposed(sender As Object, e As System.EventArgs) Handles Me.Disposed
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  Disposed")
        End Sub
    
        Private Sub Page_Error(sender As Object, e As System.EventArgs) Handles Me.Error
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  Error")
        End Sub
    
        Private Sub Page_Init(sender As Object, e As System.EventArgs) Handles Me.Init
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  Init")
        End Sub
    
        Private Sub Page_InitComplete(sender As Object, e As System.EventArgs) Handles Me.InitComplete
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  InitComplete")
        End Sub
    
        Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  Load")
        End Sub
    
        Private Sub Page_LoadComplete(sender As Object, e As System.EventArgs) Handles Me.LoadComplete
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  LoadComplete")
        End Sub
    
        Private Sub Page_PreInit(sender As Object, e As System.EventArgs) Handles Me.PreInit
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  PreInit")
        End Sub
    
        Private Sub Page_PreLoad(sender As Object, e As System.EventArgs) Handles Me.PreLoad
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  PreLoad")
        End Sub
    
        Private Sub Page_PreRender(sender As Object, e As System.EventArgs) Handles Me.PreRender
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  PreRender")
        End Sub
    
        Private Sub Page_PreRenderComplete(sender As Object, e As System.EventArgs) Handles Me.PreRenderComplete
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  PreRenderComplete")
        End Sub
    
        Private Sub Page_SaveStateComplete(sender As Object, e As System.EventArgs) Handles Me.SaveStateComplete
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  SaveStateComplete")
        End Sub
    
        Private Sub Page_Unload(sender As Object, e As System.EventArgs) Handles Me.Unload
            SeqNo += 1
            Debug.Print(SeqNo.ToString & " -  Unload")
        End Sub
    • Run the Web application in Debug mode (by selecting Debug-> Start Debugging OR press F5).
    • After the page is viewed completely on the browser, check the output window in Visual Studio (if it was not opened select View -> Output OR press Ctrl+Alt+O)
    • you will see something like this:
(removed text )....
  1. PreInit
  2. Init
  3. InitComplete
  4. PreLoad
  5. Load
  6. LoadComplete
  7. PreRender
  8. PreRenderComplete
  9. SaveStateComplete
  10. Unload
( removed text )....