Calculadora - switch Ejercicio VB.Net - Curso de Programación Visual Basic

Imports System
Public Class exercise054
    Public Shared Sub Main()
        Dim a, b As Integer
        Dim operation As Char
        Console.Write("Enter first number: ")
        a = Convert.ToInt32(Console.ReadLine())
        Console.Write("Enter operation: ")
        operation = Convert.ToChar(Console.ReadLine())
        Console.Write("Enter second number: ")
        b = Convert.ToInt32(Console.ReadLine())

        Select Case operation
            Case "+"c
                Console.WriteLine("{0} + {1} = {2}", a, b, a + b)
            Case "-"c
                Console.WriteLine("{0} - {1} = {2}", a, b, a - b)
            Case "x"c, "*"c
                Console.WriteLine("{0} * {1} = {2}", a, b, a * b)
            Case "/"c
                Console.WriteLine("{0} / {1} = {2}", a, b, a / b)
            Case Else
                Console.WriteLine("Wrong Character")
        End Select
    End Sub
End Class