Programe to print prime number in visual basic 6.0

hay friends i have written this programme to print prime noumber but it did not give me desired result so can any one herlp me.😕

Private Sub Form_Load()
 'this programm is program to find prime noumbers till
 '100
 'This programe is programmed and coded by
 'Safwan patel
 'you can share this programm no copyrights
 
MsgBox ("PLease enter any noumber under 100 for finding prime no.")
MsgBox ("this programm will find prime noumbers under 100")
End Sub
Private Sub cmdFind_Click()
 ' this code is 4 event when user will click this button
 Dim inti As Integer, intnum As Integer
  ' data verification related to use
  intnum = Val(txtnum.Text)
   ' converts text into number and take it in use
  List1.AddItem 1
  List1.AddItem 2
  List1.AddItem 3
  List1.AddItem 5
  List1.AddItem 7
   ' we are adding this abouve itemes in list1 as
   'we know already this noumbers are prime
   'and also we dont want to waset pc time
 For inti = 4 To intnum Step 1
 
 
 
    If inti Mod 2 = 0 Then  'we are moving all no. which are divisible by 2
      List2.AddItem inti
    Else
         If inti Mod 3 = 0 Then 'after taking all odd no.
                                'we are moving all no. which are divisible by 3
            List2.AddItem inti
         Else
              If inti Mod 5 = 0 Then
                 'agin we are moving all no. which are divisible by 5
                List2.AddItem inti
              Else
                   If inti Mod 7 = 0 Then
                     ' we are moving all no. which are divisible by 7
 
                      List2.AddItem inti
                   Else
                       If inti Mod 9 Then
                        'agin we are moving all no. which are divisible by 9
                          List2.AddItem inti
                       Else
                            List1.AddItem inti
                       End If
                  End If
              End If
         End If
    End If
Next inti
 
 
 
End Sub
 

when i insert 100 in text bos the result will be :

1
2
3
5
7

can any one help me with this i want a programe to print prime noumber till 100
if you dont give code then atleast give me algorithem .😒