How to get a List of Checked items from a Treeview

[Jack]

Hello,

I have a treeview with checkboxes and I want to get the Text of each checked
item into an arraylist or something.

Thanks,

Jack

 

[Ken Tucker [MVP]]

Hi,

Use recursion to get a list of the checked nodes.

VB.Net 2003

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
For Each n As TreeNode In GetCheck(TreeView1.Nodes)
Trace.WriteLine(n.Text)
Next
End Sub

Private Function GetCheck(ByVal node As TreeNodeCollection) As ArrayList
Dim lN As New ArrayList
For Each n As TreeNode In node
If n.Checked Then lN.Add(n)
lN.AddRange(GetCheck(n.Nodes))
Next

Return lN
End Function

VB.Net 2005 method

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
For Each n As TreeNode In GetCheck(TreeView1.Nodes)
Trace.WriteLine(n.Text)
Next
End Sub

Private Function GetCheck(ByVal node As TreeNodeCollection) As List(Of
TreeNode)
Dim lN As New List(Of TreeNode)
For Each n As TreeNode In node
If n.Checked Then lN.Add(n)
lN.AddRange(GetCheck(n.Nodes))
Next

Return lN
End Function

Ken