Catch block for (optional) type defined in variable

Question

I am looking to be able to handle certain exception types differently, and optionally. If I pass a type to be ignored as an argument $ignoreExceptionType I can use

try {
   ... code that might generate an exception
} catch {
    if (-not $ignoreExceptionType -or (-not ($PSItem.Exception -is $ignoreExceptionType)) {
        ... do actual exception handling
    }
}

However, I wonder if there is a way to have a dedicated catch block, something like

} catch $ignoreExceptionType {

The fact that this variable is optional, and the conditional works fine. But if there is a mechanism to do it as a dedicated block I suspect it could be useful at some point.

Answer 1

No, the syntax for the catch block is restricted to a comma-separated list of 0 or more type names - no variable expansion or other deferable logic can be employed, the list of exception type names has to be hardcoded in the source code.

You can read more about try/catch/finally blocks in the about_Try_Catch_Finally help file