Visual Basic - Factorial of a Number using Recursive Function

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I have given here VB Progarm to find a factorial of a number using recursion.

It is designed using WinForm. Winform would look like,

The source code to find factorial is given below:

    Public Class Form1

        Private Function Fact(ByVal n As Integer)
    
            If (n = 0) Then
                Fact = 1
            Else
                Fact = n * Fact(n - 1)
            End If
    
        End Function
    
    
        Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    
            Dim n As Integer
            n = Integer.Parse(TextBox1.Text)
            Label2.Text = Fact(n).ToString()
    
        End Sub
    End Class

    

The output screen would be,