Page_Error not working !?

[Alex Nitulescu]

Hi.

I read about Page_Error and Application_Err or. However, I provoke an error
in a page but still Page_Error won't run. This is all the code I have left
in my page:

---------------------------------------------------------------------------------
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load

Dim txtTextBox As TextBox
txtTextBox.Text = "A"
End Sub

Sub Page_Error(ByVa l sender As Object, ByVal e As EventArgs)
Response.Write( "Error: ")
Response.Write( "<p></p>")
Response.Write( Server.GetLastE rror.Message)
Server.ClearErr or()
End Sub
---------------------------------------------------------------------------------

I see "Object reference not set to an instance of an object" in the default
ASP.NET error page....
I have played with Debug=true/false, trace=True/False, <customErrors
mode="On/Off/RemoteOnly" />, etc, but to no avail.

Please, what am I missing here ?

Thank you, Alex.

[Joyjit Mukherjee]

Hi,

the Page_Error event is indeed firing and the handling code is also
executing. Tyr setting autoeventwireup = "false" and set breakpoints to the
Page_error handler to see whether that piece is executing or not.

regards
Joyjit

"Alex Nitulescu" <RE************ ***********@yah oo.com> wrote in message
news:O1******** ********@tk2msf tngp13.phx.gbl. ..

Hi.

I read about Page_Error and Application_Err or. However, I provoke an error
in a page but still Page_Error won't run. This is all the code I have left
in my page:

-------------------------------------------------------------------------- ------- Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load

Dim txtTextBox As TextBox
txtTextBox.Text = "A"
End Sub

Sub Page_Error(ByVa l sender As Object, ByVal e As EventArgs)
Response.Write( "Error: ")
Response.Write( "<p></p>")
Response.Write( Server.GetLastE rror.Message)
Server.ClearErr or()
End Sub
-------------------------------------------------------------------------- -------
I see "Object reference not set to an instance of an object" in the default ASP.NET error page....
I have played with Debug=true/false, trace=True/False, <customErrors
mode="On/Off/RemoteOnly" />, etc, but to no avail.

Please, what am I missing here ?

Thank you, Alex.

[fd123456]

Hi Alex,

You're missing this in your Page_Load sub:

AddHandler Page.Error, AddressOf Page_Error

But I believe it only catches *server* errors (IIS), not *your
application* errors. That's why Server.GetLastE rror() is always empty
(Nothing), and your sub doesn't fire. To catch Application errors, I
think you must use either try/catch blocks, or the Application_Err or
sub in Global.asax.vb. ..

HTH,

Michel

"Alex Nitulescu" <RE************ ***********@yah oo.com> wrote in message news:<O1******* *******@tk2msft ngp13.phx.gbl>. ..

Hi.

I read about Page_Error and Application_Err or. However, I provoke an error
in a page but still Page_Error won't run. This is all the code I have left
in my page:

---------------------------------------------------------------------------------
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load

Dim txtTextBox As TextBox
txtTextBox.Text = "A"
End Sub

Sub Page_Error(ByVa l sender As Object, ByVal e As EventArgs)
Response.Write( "Error: ")
Response.Write( "<p></p>")
Response.Write( Server.GetLastE rror.Message)
Server.ClearErr or()
End Sub
---------------------------------------------------------------------------------

I see "Object reference not set to an instance of an object" in the default
ASP.NET error page....
I have played with Debug=true/false, trace=True/False, <customErrors
mode="On/Off/RemoteOnly" />, etc, but to no avail.

Please, what am I missing here ?

Thank you, Alex.

[William F. Robertson, Jr.]

You will need to handle the Error event.

Try adding Handles MyBase.Error to yous Page_Error sub.

Sub Page_Error(ByVa l sender As Object, ByVal e As EventArgs) Handles
MyBase.Error.

This Page.Error event is triggered when an unhandled exception occurs
anywhere during page processing. The Application.Err or will fire when
outside of the scope of a page.

Try this out and let us know how it resolved out.

Here is the stub I used to test it out.

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Throw New Exception("Exce ption Thrown")
End Sub

Private Sub Page_Error(ByVa l sender As Object, ByVal e As System.EventArg s)
Handles MyBase.Error
Dim exception As Exception
exception = Server.GetLastE rror()
Response.Write( exception.Messa ge)
Server.ClearErr or()
End Sub

bill
"Alex Nitulescu" <RE************ ***********@yah oo.com> wrote in message
news:O1******** ********@tk2msf tngp13.phx.gbl. ..

Hi.

I read about Page_Error and Application_Err or. However, I provoke an error
in a page but still Page_Error won't run. This is all the code I have left
in my page:

-------------------------------------------------------------------------- ------- Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load

Dim txtTextBox As TextBox
txtTextBox.Text = "A"
End Sub

Sub Page_Error(ByVa l sender As Object, ByVal e As EventArgs)
Response.Write( "Error: ")
Response.Write( "<p></p>")
Response.Write( Server.GetLastE rror.Message)
Server.ClearErr or()
End Sub
-------------------------------------------------------------------------- -------
I see "Object reference not set to an instance of an object" in the default ASP.NET error page....
I have played with Debug=true/false, trace=True/False, <customErrors
mode="On/Off/RemoteOnly" />, etc, but to no avail.

Please, what am I missing here ?

Thank you, Alex.

[Alex Nitulescu]

Thank you all - problem solved ! :-)))

Alex.

"Alex Nitulescu" <RE************ ***********@yah oo.com> wrote in message
news:O1******** ********@tk2msf tngp13.phx.gbl. ..

Hi.

I read about Page_Error and Application_Err or. However, I provoke an error
in a page but still Page_Error won't run. This is all the code I have left
in my page:

---------------------------------------------------------------------------------
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load

Dim txtTextBox As TextBox
txtTextBox.Text = "A"
End Sub

Sub Page_Error(ByVa l sender As Object, ByVal e As EventArgs)
Response.Write( "Error: ")
Response.Write( "<p></p>")
Response.Write( Server.GetLastE rror.Message)
Server.ClearErr or()
End Sub
---------------------------------------------------------------------------------

I see "Object reference not set to an instance of an object" in the
default ASP.NET error page....
I have played with Debug=true/false, trace=True/False, <customErrors
mode="On/Off/RemoteOnly" />, etc, but to no avail.

Please, what am I missing here ?

Thank you, Alex.