Example of basic Arithmetic Operation using Params Array in VB.net

Public Class ParamArithmeticOperation

	Private Shared Sub Main()

		'calling function

		PerformArithmeticOperation(200, 100, "+")
		'perform addition
		PerformArithmeticOperation(200, 100, "-")
		'perform subtraction
		PerformArithmeticOperation(200, 100, "*")
		'perform multiplication
		PerformArithmeticOperation(200, 100, "/")
		'perform division
	End Sub

	'called function
	Public Shared Sub PerformArithmeticOperation(ParamArray items As Object())

		Dim result = 0

		Select Case Convert.ToString(items(2))
			'items[2] is the operator(s) i.e. +,-,*,/
			Case "+"C
				result = Convert.ToInt32(items(0)) + Convert.ToInt32(items(1))
				Exit Select
			Case "-"C
				result = Convert.ToInt32(items(0)) - Convert.ToInt32(items(1))
				Exit Select
			Case "*"C
				result = Convert.ToInt32(items(0)) * Convert.ToInt32(items(1))
				Exit Select
			Case "/"C
				result = Convert.ToInt32(items(0)) / Convert.ToInt32(items(1))
				Exit Select
			Case Else

				Console.WriteLine("No such operation available")
		End Select
		Console.WriteLine(result)
	End Sub
End Class