Black Jack, Visual Basic

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'Rextester.Program.Main is the entry point for your code. Don't change it.
'Compiler version 11.0.50709.17929 for Microsoft (R) .NET Framework 4.5

Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Text.RegularExpressions

Namespace Rextester
    Public Module Program
        'Your code goes here：define record data type "Poker".
        Structure Poker
            Dim number As PokerNumber
            Dim suit As PokerSuits
        End Structure
        'You need to define 2 enumerated data types too
        Enum PokerNumber
            Ace = 1
            Two = 2
            Three = 3
            Four = 4
            Five = 5
            Six = 6
            Seven = 7
            Eight = 8
            Nine = 9
            Ten = 10
            Jack = 11
            Queen = 12
            King = 13
        End Enum
            
        Enum PokerSuits
            Diamond
            Club
            Heart
            Spade
        End Enum
        
        Public Function WriteCard(card as Poker) As String
            Dim result As String = ""
            select card.suit
            case 0 
                result = result + "Diamond "
            case 1 
                result = result + "Club "
            case 2 
                result = result + "Heart "
            case 3 
                result = result + "Spade "
            End Select
            
            select card.number
            case 2 to 10 
                result = result + (card.number).ToString
            case 11 
                result = result + "Jack "
            case 12 
                result = result + "Queen "
            case 13 
                result = result + "King "
            case 1 
                result = result + "Ace "
            End Select
            
            WriteCard = result
        End Function

Public Sub Main(args() As string)
            'Your code goes here
            'generate 2 cards randomly and use the following statement for output:
            'Console.WriteLine("Your card is " + WriteCard(card1))
            
            Dim Card1 As Poker
            Dim Card2 As Poker
            Dim RandNum As New Random
            
           
            Card1.suit = RandNum.next(0,4)
            Card2.suit = RandNum.next(0,4)
            Card1.number = RandNum.next(1,13)
            Card2.number = RandNum.next(1,13)
            
            Console.WriteLine("Your first card is " + WriteCard(Card1))
            Console.writeLine("Your second card is " + WriteCard(Card2))
            
            'Compare 2 cards and print the winner.
            If Card1.number > Card2.number Then
                Console.WriteLine("Card 1 won")
            Elseif Card1.number < Card2.number Then
                Console.WriteLine("Card 2 Won")
            Else
                If Card1.suit > Card2.suit Then
                    Console.WriteLine("Card 1 won")
                Elseif Card1.suit < Card2.suit Then
                    Console.WriteLine("Card 2 won")
                Else
                    Console.WriteLine("Tie game")
                End If
            End If
 
 
 
        End Sub
    End Module
End Namespace

Show compiler warnings [ + ] Show input
Compilation time: 4,1 sec, absolute running time: 0,09 sec, cpu time: 0,09 sec, average memory usage: 13 Mb, average nr of threads: 3, absolute service time: 4,23 sec