rspec/rules/S1862/vbnet/rule.adoc

== Why is this an issue?

A chain of ``++If++``/``++ElseIf++`` statements is evaluated from top to bottom. At most, only one branch will be executed: the first one with a condition that evaluates to ``++True++``.


Therefore, duplicating a condition automatically leads to dead code. Usually, this is due to a copy/paste error. At best, it's simply dead code and at worst, it's a bug that is likely to induce further bugs as the code is maintained, and obviously it could lead to unexpected behavior.

=== Noncompliant code example

[source,vbnet]
----
If param = 1 Then
  OpenWindow()
ElseIf param = 2 Then
  CloseWindow()
ElseIf param = 1 Then ' Noncompliant
  MoveWindowToTheBackground()
End If
----

=== Compliant solution

[source,vbnet]
----
If param = 1 Then
  OpenWindow()
ElseIf param = 2 Then
  CloseWindow()
ElseIf param = 3 Then
  MoveWindowToTheBackground()
End If
----


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== Implementation Specification
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== Comments And Links
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