[source,vbnet]
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<TestMethod>
<ExpectedException(GetType(InvalidOperationException))>
Public Sub UsingTest()
    Console.ForegroundColor = ConsoleColor.Black
    Try
        Using alert As New ConsoleAlert()
            Assert.AreEqual(ConsoleColor.Red, Console.ForegroundColor)
            Throw New InvalidOperationException()
        End Using
    Finally
        Assert.AreEqual(ConsoleColor.Black, Console.ForegroundColor) ' The exception itself is not relevant for the test.
    End Try
End Sub

Public NotInheritable Class ConsoleAlert
    Implements IDisposable

    Private ReadOnly previous As ConsoleColor

    Public Sub New()
        previous = Console.ForegroundColor
        Console.ForegroundColor = ConsoleColor.Red
    End Sub

    Public Sub Dispose() Implements IDisposable.Dispose
        Console.ForegroundColor = previous
    End Sub
End Class
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