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VB allows VB6-style error handling for compatibility purposes. Some elements of VB6 error handling can be converted to try/catch blocks. Items that cannot be converted and must be addressed via refactoring are: On Error Resume Next, Resume, Resume Next, On Error GoTo -1, and references to the Err object.\
For the simplest case, the conversion is trivial:
VB (with VB6 error handling):
Public Sub ErrorHandlingExample()
On Error GoTo ErrorHandler
'... <main logic>
'... <error handling code>
// On Error GoTo ErrorHandler
//... <main logic>
//... <error handling code>
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