Hesap makinesi kodladım

Public Class Form1 Dim isaret As String Dim sayi1, sayi2, sonuc, modsonuc As Double Private Sub Button14_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button14.Click isaret = "eksi" sayi1 = TextBox1.Text Label1.Text = sayi1 & " - " TextBox1.Text = "" ' butonları gizledik .... Button12.Enabled = True Button13.Enabled = False Button14.Enabled = False Button15.Enabled = False Button16.Enabled = False End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click If TextBox1.Text = "0" Then TextBox1.Text = "1" Else TextBox1.Text = TextBox1.Text + "1" End If End Sub Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click If TextBox1.Text = "0" Then TextBox1.Text = "2" Else TextBox1.Text = TextBox1.Text + "2" End If End Sub Private Sub Button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button9.Click If TextBox1.Text = "0" Then TextBox1.Text = "3" Else TextBox1.Text = TextBox1.Text + "3" End If End Sub Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click If TextBox1.Text = "0" Then TextBox1.Text = "4" Else TextBox1.Text = TextBox1.Text + "4" End If End Sub Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click If TextBox1.Text = "0" Then TextBox1.Text = "5" Else TextBox1.Text = TextBox1.Text + "5" End If End Sub Private Sub Button10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button10.Click If TextBox1.Text = "0" Then TextBox1.Text = "6" Else TextBox1.Text = TextBox1.Text + "6" End If End Sub Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click If TextBox1.Text = "0" Then TextBox1.Text = "7" Else TextBox1.Text = TextBox1.Text + "7" End If End Sub Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click If TextBox1.Text = "0" Then TextBox1.Text = "8" Else TextBox1.Text = TextBox1.Text + "8" End If End Sub Private Sub Button11_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button11.Click If TextBox1.Text = "0" Then TextBox1.Text = "9" Else TextBox1.Text = TextBox1.Text + "9" End If End Sub Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click If TextBox1.Text = "0" Then TextBox1.Text = "0" Else TextBox1.Text = TextBox1.Text + "0" End If End Sub Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load End Sub Private Sub Button13_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button13.Click isaret = "artı" sayi1 = TextBox1.Text Label1.Text = sayi1 & " + " TextBox1.Text = "" ' butonları gizledik .... Button12.Enabled = True Button13.Enabled = False Button14.Enabled = False Button15.Enabled = False Button16.Enabled = False End Sub Private Sub Button15_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button15.Click isaret = "carpma" sayi1 = TextBox1.Text Label1.Text = sayi1 & " * " TextBox1.Text = "" ' butonları gizledik .... Button12.Enabled = True Button13.Enabled = False Button14.Enabled = False Button15.Enabled = False Button16.Enabled = False End Sub Private Sub Button16_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button16.Click isaret = "bölme" sayi1 = TextBox1.Text Label1.Text = sayi1 & " / " TextBox1.Text = "" ' butonları gizledik .... Button12.Enabled = True Button13.Enabled = False Button14.Enabled = False Button15.Enabled = False Button16.Enabled = False End Sub Private Sub Button12_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button12.Click sayi2 = TextBox1.Text Button12.Enabled = False ' butonları aktif ettik .... Button13.Enabled = True Button14.Enabled = True Button15.Enabled = True Button16.Enabled = True If isaret = "eksi" Then sonuc = sayi1 - sayi2 Label1.Text = sayi1 & " - " & sayi2 & " = " & sonuc TextBox1.Text = "" ElseIf isaret = "artı" Then sonuc = sayi1 + sayi2 Label1.Text = sayi1 & " + " & sayi2 & " = " & sonuc TextBox1.Text = "" ElseIf isaret = "carpma" Then sonuc = sayi1 * sayi2 Label1.Text = sayi1 & " * " & sayi2 & " = " & sonuc TextBox1.Text = "" ElseIf isaret = "bölme" Then sonuc = sayi1 / sayi2 modsonuc = sayi1 Mod sayi2 Label1.Text = sayi1 & " / " & sayi2 & " = " & sonuc & vbNewLine & "kalan: " & modsonuc TextBox1.Text = "" End If End Sub Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click isaret = "" Label1.Text = "" Button12.Enabled = True sayi1 = 0 sayi2 = 0 modsonuc = 0 End Sub End Class