Paul,
In addition to the others comments.
For information on using Throw to "raise errors" and Try/Catch to handle
those errors see:
http://msdn.microsoft.com/library/de...onHandling.asp
Depending on the type of application you are creating, .NET has three
different global exception handlers.
For ASP.NET look at:
System.Web.HttpApplication.Error event
Normally placed in your Global.asax file.
For console applications look at:
System.AppDomain.UnhandledException event
Use AddHandler in your Sub Main.
For Windows Forms look at:
System.Windows.Forms.Application.ThreadException event
Use AddHandler in your Sub Main.
It can be beneficial to combine the above global handlers in your app, as
well as wrap your Sub Main in a try catch itself.
There is an article in the June 2004 MSDN Magazine that shows how to
implement the global exception handling in .NET that explains why & when you
use multiple of the above handlers...
http://msdn.microsoft.com/msdnmag/is...T/default.aspx
For example: In my Windows Forms apps I would have a handler attached to the
Application.ThreadException event, plus a Try/Catch in my Main. The
Try/Catch in Main only catches exceptions if the constructor of the MainForm
raises an exception, the Application.ThreadException handler will catch all
uncaught exceptions from any form/control event handlers.
Hope this helps
Jay
"Paul Wilson" <pa**@dummyemailaddress.com> wrote in message
news:ey*************@tk2msftngp13.phx.gbl...
I want to use Err.Raise() method to raise my own exceptions.
Is this the right way of raising my own exceptions ? (i think this is the
only way).
What is the Error number i can safely use, ensuring that it isn't used by
.NET.
Ie, can i use -100 as a error number??
Ie, -100, -101,-102... etc.
I want to konw if .NET uses negative values as error number?
(because i want a specific list of error numbers, to ensure that they are
used & ONLY raised by me in my applications).
Regards,
Paul
