Question Search TreeView Nodes using indexof/contains which is better?

[darkcat02]

hi everyone...

i found this code on this forum.. but im not satisfied on the results.. i tried to recode it but no luck.. i just need your opinions... if you can give example... many thanks...

Function searchTreeview(ByVal SearchString As String, ByVal Nodes As TreeNodeCollection, _
Optional ByVal ExactMatch As Boolean = False, _
Optional ByVal Recursive As Boolean = True) _
As TreeNode

Dim ret As TreeNode
For Each tn As TreeNode In Nodes
If ExactMatch = True Then
If tn.Text = SearchString Then Return tn
Else
If tn.Text.IndexOf(SearchString) <> -1 Then Return tn
End If

If Recursive = True Then
If tn.Nodes.Count > 0 Then
ret = searchTreeview(SearchString, tn.Nodes, ExactMatch, Recursive)
If Not ret Is Nothing Then Return ret
End If
End If
Next
Return Nothing
End Function

Private Sub btnSearch_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ButtonSearch.Click
Dim tn As TreeNode = searchTreeview(TextBoxWordFind.Text, TreeViewBible.Nodes, False, True)
If Not tn Is Nothing Then
TreeViewBible.SelectedNode = tn
TreeViewBible.SelectedNode.BackColor = Color.RoyalBlue
TreeViewBible.SelectedNode.ForeColor = Color.White
Else
MsgBox("no match")
End If
End Sub


as i went through this code... im not getting the result i wanted... im confused what indexof really do...

on my treeview (for example only)
Old book
- Book 1 : Title One
- Book 2 : Title Two
- Chapter 1
- Chapter 2
- Paragraph 1
- Chapter 3


here is my scenario...
the color red text are from database... and the black one are only hard coded...
when i search for "Book 1".. no match
but when i search for "1" only... it founds it...

i need to search for the whole "Book 1"...
or just the title itself... anyone could explain this?

especially the person who gave this code... thanks a lot

 

[darkcat02]

case sensitive???

my bad...

does it really need to be that case sensitive... i found out just a seconds ago... when i type for the exact case like the ones in the treeview... it has a match.. but when it was all lower case... no match...

 

[Tom]

You could change the coding slightly so that it doesnt have to be case sensitive. Adding .ToLower to both the values below will correct this.

            If ExactMatch = True Then
                If tn.Text[COLOR="red"][B].ToLower[/B] [/COLOR]= SearchString[COLOR="Red"][B].ToLower[/B] [/COLOR]Then Return tn
            Else
                If tn.Text.IndexOf(SearchString) <> -1 Then Return tn
            End If

 

[darkcat02]

oh yes.. i figured that one out the other day.. thanks for the post.. ^__^