Tracking page events in ASP.NET Page





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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.
- 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:
PreInit
Init
InitComplete
PreLoad
Load
LoadComplete
PreRender
PreRenderComplete
SaveStateComplete
Unload