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How to count all the nodes of the treeViewAdv?

 

The user could get the total number of nodes by calling GetNodeCount method with the bool argument which indicates whether count should be including sub trees or not. If we pass it as true, it will count the nodes with the subtrees also.

C#

private void button1_Click(object sender, System.EventArgs e)

{

// Call the tree control's "GetNodeCount" method with true to

// get the total number of nodes in the tree

int TotalNodesInTree = this.treeViewAdv1.GetNodeCount( true );

MessageBox.Show( "Total nodes in tree = " + TotalNodesInTree.ToString());

}

//Add nodes

private void button2_Click(object sender, System.EventArgs e)

{

this.treeViewAdv1.SelectedNode.Nodes.Add(new TreeNodeAdv());

}

//Remove nodes

private void button3_Click(object sender, System.EventArgs e)

{

this.treeViewAdv1.SelectedNode.Parent.Nodes.Remove(this.treeViewAdv1.SelectedNode);

}

VB

Private Sub button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)

' Call the tree control's "GetNodeCount" method with true to

' get the total number of nodes in the tree

Dim TotalNodesInTree As Integer = Me.treeViewAdv1.GetNodeCount(True)

MessageBox.Show("Total nodes in tree = " & TotalNodesInTree.ToString())

End Sub

'Add nodes

Private Sub button2_Click(ByVal sender As Object, ByVal e As System.EventArgs)

Me.treeViewAdv1.SelectedNode.Nodes.Add(New TreeNodeAdv())

End Sub

'Remove nodes

Private Sub button3_Click(ByVal sender As Object, ByVal e As System.EventArgs)

Me.treeViewAdv1.SelectedNode.Parent.Nodes.Remove(Me.treeViewAdv1.SelectedNode)

End Sub

Article ID: Published Date: Last Revised Date: Platform: Control:
1379 04/30/2011 07/10/2014 WinForms TreeViewAdv
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