Treeview XML child node checked then parent node checked authomatic

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I am having problems coding the fallowing :
If somebody checks a child node in the treeview control, I want the parent node of the that child node to be checked.

Some thing like:

VB

For each node as treenode in nodes
    If childrennode.checked = true then
        Parentnode.check = true
    End if
Next

The following code loads XML info to my treeview control. Each node in the treeview has a checkbox.

VB

For Each Record As XElement In doc...<record>
            recordNode = TreeView1.Nodes.Add(Record.Name.ToString)

            For Each Leader As XElement In Record...<leader>

                leaderNode = recordNode.Nodes.Add(Leader.Name.ToString)

                For Each Controlfield As XElement In Record...<controlfield>
                    controlfieldNode = recordNode.Nodes.Add(Controlfield.@tag.ToString)
                Next
            Next
        Next

        For Each Record As XElement In doc...<record>
            recordNode = TreeView1.TopNode
            For Each Datafield As XElement In Record...<datafield>
                datafielNode = recordNode.Nodes.Add(Datafield.@tag.ToString)
                For Each Subfield As XElement In Datafield...<subfield>
                    datafielNode.Nodes.Add(Subfield.@code.ToString)
                Next
            Next
        Next

Posted 13-May-11 6:53am

stopete82

Updated 13-May-11 6:58am

fjdiewornncalwe

v4

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Comments

Fabio V Silva 13-May-11 13:08pm

What are the problems you're having then?

stopete82 13-May-11 13:17pm

Syntax problem:

Dim nodes As TreeNodeCollection

For each node as treenode in nodes
If childrennode.checked = True Then
Parentnode.check = True
End If
Next
with this code I get childrennode not declared and parentnode change to Treenode.

1 solution

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Dave Kreskowiak · Accepted Answer · 2011-05-13T07:32:00

Solution 1

Every node has a Parent property. This is trivial to do.

All you do is

checkedNode.Parent.Checked = True

where checkedNode is the node the user checked. You can get this from the eventargs that are passed to you code depending on which TreeView event you're using.

Posted 13-May-11 7:32am

Dave Kreskowiak

Comments

stopete82 13-May-11 14:43pm

Thanks for your help, this is the code that worked for me:

Private Sub TreeView1_AfterCheck(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView1.AfterCheck

Dim Pnode As TreeNode = e.Node

Dim PPnode As TreeNode = Pnode.Parent

If Pnode.Checked = True Then
While PPnode IsNot Nothing
RemoveHandler PPnode.TreeView.AfterCheck, AddressOf TreeView1_AfterCheck
PPnode.Checked = True
AddHandler PPnode.TreeView.AfterCheck, AddressOf TreeView1_AfterCheck
PPnode = PPnode.Parent
End While
Else
UncheckParent(PPnode)
End If

End Sub