1. Dictionary Builder
Part 1
Getting Started

2. Step 1 – build the Form Controls: grpInput btnOpenDictionary lstWords
btnExtractWords
txtNewWord
btnAddWord
btnOpenDictionary
lstWords
btnSave
btnExit
+ and assorted labels

3. Which control will provide the easiest place to start?
Step 2 – start easy
Which control will provide the easiest place to start?

4. Which control will provide the easiest place to start? btnAddWord.
Step 2 – start easy
Which control will provide the easiest place to start? btnAddWord.

5. Step 2 – btnAddWord
What does it do?

6. Step 2 – btnAddWord What does it do?
It moves a word from the textBox to the listBox.

7. Step 2 – btnAddWord What does it do? How?
It moves a word from the textBox to the listBox.
How?

8. Step 2 – btnAddWord What does it do? How?
It moves a word from the textBox to the listBox.
How?
if there's something in the textBox

9. Step 2 – btnAddWord What does it do? How?
It moves a word from the textBox to the listBox.
How?
if there's something in the textBox
copy it to the listBox

10. Step 2 – btnAddWord What does it do? How? What else should be done?
It moves a word from the textBox to the listBox.
How?
if there's something in the textBox
copy it to the listBox
What else should be done?

11. Step 2 – btnAddWord What does it do? How?
It moves a word from the textBox to the listBox.
How?
if there's something in the textBox
copy it to the listBox
set the focus back in the textBox

12. Step 2 – btnAddWord What does it do? How?
It moves a word from the textBox to the listBox.
How?
if there's something in the textBox
copy it to the listBox
set the focus back in the textBox
clear the textBox

13. BUT not everything should go into the listBox

14. BUT not everything should go into the listBox
What conditions should be imposed on the text strings entered by the User?

15. BUT not everything should go into the listBox
We need to deal with “words” that:
have UPPER case characters

16. BUT not everything should go into the listBox
We need to deal with “words” that:
have UPPER case characters
are too long

17. BUT not everything should go into the listBox
We need to deal with “words” that:
have UPPER case characters
are too long
have non-alpha characters

18. BUT not everything should go into the listBox
We need to deal with “words” that:
have UPPER case characters
are too long
have non-alpha characters
duplicate a word in the list

19. BUT not everything should go into the listBox
We need to deal with “words” that:
have UPPER case characters
are too long
have non-alpha characters
duplicate a word in the list
These tasks will be facilitated by using an identifier instead of object.property notation, and sub-programs.

20. Step 2 – btnAddWord Revisiting our pseudo code…
if there's something in the textBox
copy it to the listBox
set the focus back in the textBox
clear the textBox

21. Step 2 – btnAddWord
If txtWord.Text <> vbNullString Then End If

22. Step 2 – btnAddWord
If txtWord.Text <> vbNullString Then Dim newWord = LCase(txtWord.Text) lstWords.Items.Add(newWord) End If

23. Step 2 – btnAddWord
If txtWord.Text <> vbNullString Then Dim newWord = LCase(txtWord.Text) lstWords.Items.Add(newWord) txtWord.Focus() End If

24. Step 2 – btnAddWord
If txtWord.Text <> vbNullString Then Dim newWord = LCase(txtWord.Text) lstWords.Items.Add(newWord) txtWord.Focus() txtWord.Clear() End If

25. Step 2 – btnAddWord
If txtWord.Text <> vbNullString Then Dim newWord = LCase(txtWord.Text) If Len(newWord) <= 11 Then lstWords.Items.Add(newWord) txtWord.Focus() txtWord.Clear() End If

26. Step 2 – btnAddWord
If txtWord.Text <> vbNullString Then Dim newWord = LCase(txtWord.Text) If Len(newWord) <= 11 Then lstWords.Items.Add(newWord) txtWord.Focus() txtWord.Clear() Else txtWord.SelectAll() End If

27. Step 2 – btnAddWord
If txtWord.Text <> vbNullString Then Dim newWord = LCase(txtWord.Text) If Len(newWord) <= 11 And isWord(newWord) Then lstWords.Items.Add(newWord) txtWord.Focus() txtWord.Clear() Else txtWord.SelectAll() End If

28. Step 2.1 – isWord()
Private Function isWord() End Function

29. Step 2.1 – isWord()
Private Function isWord(ByVal t As String) As Boolean End Function

30. Step 2.1 – isWord()
Private Function isWord(ByVal t As String) As Boolean Return ??? End Function

31. Step 2.1 – isWord()
Private Function isWord(ByVal t As String) As Boolean Return flag End Function

32. Step 2.1 – isWord()
Private Function isWord(ByVal t As String As Boolean Dim flag = True Return flag End Function

33. Step 2.1 – isWord()
Private Function isWord(ByVal t As String) As Boolean Dim flag = True Dim c As Integer For c = 1 To Len(t) ˈ under some condition flag = False Next Return flag End Function

34. Step 2.1 – isWord()
Private Function isWord(ByVal t As String) As Boolean Dim flag = True Dim c As Integer For c = 1 To Len(t) Dim thisC = Mid(t, c, 1) If thisC < "a" Or thisC > "z" Then flag = False End If Next Return flag End Function

35. Step 2.1 – isWord()
Private Function isWord(ByVal t As String) As Boolean Dim flag = True Dim c As Integer For c = 1 To Len(t) Dim thisC = Mid(t, c, 1) If thisC < "a" Or thisC > "z" Then flag = False Exit For End If Next Return flag End Function

36. Step 2.2 - isUnique() End Function
Private Function isUnique(ByVal t As String) As Boolean
End Function

37. Step 2.2 - isUnique() Dim flag = True Return flag End Function
Private Function isUnique(ByVal t As String) As Boolean
Dim flag = True
Return flag
End Function

38. Step 2.2 - isUnique() Dim flag = True Dim i As Integer
Private Function isUnique(ByVal t As String) As Boolean
Dim flag = True
Dim i As Integer
For i = 0 To lstWords.Items.Count - 1
ˈ under some condition
flag = False
Next
Return flag
End Function

39. Step 2.2 - isUnique() Dim flag = True Dim i As Integer
Private Function isUnique(ByVal t As String) As Boolean
Dim flag = True
Dim i As Integer
For i = 0 To lstWords.Items.Count - 1
If t = lstWords.Items.Item(i) Then
flag = False
Exit For
End If
Next
Return flag
End Function