Tracking page events in ASP.NET Page

NOTE: I added this article in Code Project .

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

2- Run the Web application in Debug mode (by selecting Debug-> Start Debugging OR press F5).

3- 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)

4- 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 )....