Imports System.Numerics
Imports System
Imports System.Globalization
Module Example
Public Sub Main()
Dim number1 As BigInteger = BigInteger.Zero
Dim number2 As BigInteger = BigInteger.Zero
Dim succeeded1 As Boolean = BigInteger.TryParse("-9999", number1)
Dim succeeded2 As Boolean = BigInteger.TryParse("9999", number2)
End Sub
End Module