O'Reilly logo

VB.NET Language in a Nutshell, Second Edition by Steven Roman PhD, Paul Lomax, Ron Petrusha

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Name

Err.Description Property

Class

Microsoft.VisualBasic.ErrObject

Syntax

To set the property:

Err.Description = string

To return the property value:

                  string = Err.Description
string (required; String)

Any string expression

Description

A read/write property containing a short string describing a runtime error

Rules at a Glance

  • When a runtime error occurs, the Description property is automatically assigned the standard description of the error.

  • For application-defined errors, you must assign a string expression to the Description property, or the error will not have an accompanying textual message.

  • You can override the standard description by assigning your own description to the Err object for both VB errors and application-defined errors.

Programming Tips and Gotchas

  • If an error occurs within a class module, an ActiveX DLL, or an EXE — regardless of whether it is running in or out of your application’s process space — no error information from the component will be available to your application unless you explicitly pass back an error code as part of the error-handling routine within the component. This is done using the Err.Raise method, which allows you to raise an error on the client, passing custom arguments for Number, Source, and Description.

  • If you raise an error with the Err.Raise method and do not set the Description property, the Description property will be automatically set to “Application- efined or Object-Defined Error.”

  • You can also pass the Err.Description to a logging ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required