Değiken Kullanımına Bağlı ToUpper Ve ToLower Kullanımı

Gerekenler 1 Buton.
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Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim veri As String
        veri = InputBox("NASILSINIZ?")
        If veri.ToUpper.CompareTo("İYİM") = 0 Then
            MsgBox("ALLAH İYİLİK VERSİN :)")
        Else
            MsgBox("GEÇMİŞ OLSUN :(")
        End If
    End Sub
End Class
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FAKTORİYEL HESAPLAYICI

Gerekenler 1 Buton ve 1 tane Textbox

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Public Class Form1

    Function faktöriyel(ByVal sayı As Integer) As Integer

        Dim sayac, islem As Integer

        islem = 1

        For sayac = 1 To sayı

            islem = sayac * islem

        Next

        Return islem

    End Function

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim deger As Integer

        deger = TextBox1.Text

        Dim sonuc As Integer

        sonuc = faktöriyel(deger)

        TextBox1.Text = sonuc

    End Sub

End Class

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