Well, first off 10/0 will not throw an error. I also assume you must have
Option Strict Off or your code would not even compile: err would need to be
dimmed as a double or you would need ctype(10/zero, double) for code to
compile.
I think GetLastError only returns the last unhandled error, during the
current context, and I think the page's Page_Error event or global.asax
Application_Error event has to be raised to access it. Once one of those
events is raised Server.GetLastError is available anywhere in your
code...for the remainder of the current context / request
Example:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
Dim zero As Integer = 0
Dim err As Double = 10 / CType("x", Integer)
End Sub
Private Sub Page_Error(ByVal sender As Object, ByVal e As System.EventArgs)
Handles MyBase.Error
Response.Write(Server.GetLastError.Message)
End Sub
Or since it's now available anywhere, you could also do something like this:
Private Sub Page_Error(ByVal sender As Object, ByVal e As System.EventArgs)
Handles MyBase.Error
Server.Transfer("error.aspx")
End Sub
And then in error.aspx
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
Response.Write(Server.GetLastError.Message)
End Sub
"VK" <an*******@discussions.microsoft.com> wrote in message
news:0d****************************@phx.gbl...
Hello,
I am trying to get the last occured error via the
following code:
Sub Page_Load(...)
Dim zero As Integer = 0
Try
Dim err As Integer = 10 / zero
Catch ex As Exception
End Try
Response.write(Server.GetLastError.Message)
End Sub
However the above code always throws an error at the
response.write line with:
Object reference not set to an instance of an object.
Anybody knows why this is happening?
