## Why is this an issue?

The requirement for a final `Case Else` clause is defensive programming.

This clause should either take appropriate action or contain a suitable comment as to why no action is taken.

### Noncompliant code example

    Select Case param ' Noncompliant - Case Else clause is missing
      Case 0
        DoSomething()
      Case 1
        DoSomethingElse()
    End Select

### Compliant solution

    Select Case param
      Case 0
        DoSomething()
      Case 1
        DoSomethingElse()
      Case Else ' Compliant
        DoSomethingElse()
    End Select

## Resources

- CWE - CWE-478 - Missing Default Case in Switch Statement